WESCO INTERNATIONAL, INC. 11-K
Table of Contents

 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 11-K
(Mark One)
     
þ   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
for the fiscal year ended December 29, 2007
or
     
o   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
for the transition period from                      to                     
COMMISSION FILE NUMBER 1-14989
A.   Full title of the plan and address of the plan, if different from that of the issuer named below:
WESCO DISTRIBUTION, INC. RETIREMENT SAVINGS PLAN
B.   Name of issuer of the securities held pursuant to the plan and the address of its principal executive offices:
WESCO INTERNATIONAL, Inc.
225 West Station Square Drive
Suite 700
Pittsburgh, Pennsylvania 15219-1122
 
 

 


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Financial Statements
December 29, 2007 and 2006

 


 

WESCO Distribution, Inc.
Retirement Savings Plan
Index

 
         
    Page(s)  
 
       
    2-3  
 
       
Financial Statements
       
 
       
    4  
 
       
    5  
 
       
    6-11  
 
       
Supplemental Schedule
       
 
       
    12-37  
 
       
Exhibit 23.1 Consent of Independent Registered Public Accounting Firm
       
 
       
Exhibit 23.2 Consent of Independent Registered Public Accounting Firm
       
 EX-23.1
 EX-23.2

 


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
 
Report of Independent Registered Public Accounting Firm
To the Participants and Administrator of
WESCO Distribution, Inc. Retirement Savings Plan
We have audited the accompanying statement of net assets available for plan benefits of WESCO Distribution, Inc. Retirement Savings Plan as of and for the year ending December 29, 2007, and the related statements of changes in net assets available for plan benefits for the year then ended. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audit in accordance with standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for plan benefits of WESCO Distribution, Inc. Retirement Savings Plan as of December 29, 2007, and the changes in net assets available for plan benefits for the year then ended in conformity with accounting principles generally accepted in the United States of America.
Our audit was performed for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedule is presented for the purpose of additional analysis and is not a required part of the basic financial statements but is supplementary information required by the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. This supplemental schedule is the responsibility of the Plan’s management. The supplemental schedule is the responsibility of Plan’s management. The supplemental schedule has been subjected to the auditing procedures applied in the audit of the basic financial statements for the year ended December 29, 2007 and, in our opinion, is fairly stated in all material respects in relation to the basic financial statements taken as a whole.
         
     
/s/ Freed Maxick & Battaglia, CPAs, PC    
Buffalo, New York     
June 26, 2008     
The accompanying notes are an integral part of these financial statements.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
 
Report of Independent Registered Public Accounting Firm
To the Participants and Administrator of
WESCO Distribution, Inc. Retirement Savings Plan
In our opinion, the accompanying statement of net assets available for benefits presents fairly, in all material respects, the net assets available for benefits of the WESCO Distribution, Inc. Retirement Savings Plan (the “Plan”) at December 29, 2006 in conformity with accounting principles generally accepted in the United States of America. This financial statement is the responsibility of the Plan’s management; our responsibility is to express an opinion on this financial statement based on our audit. We conducted our audit of this statement in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the statement of net assets available for benefits is free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the statement of net assets available for benefits, assessing the accounting principles used and significant estimates made by management, and evaluating the overall statement of net assets available for benefits presentation. We believe that our audit of the statement of net assets available for benefits provides a reasonable basis for our opinion.
         
     
/s/ PricewaterhouseCoopers LLP    
Pittsburgh, Pennsylvania     
June 27, 2007     
 

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Statements of Net Assets Available for Benefits
December 29, 2007 and 2006
 
                 
    2007     2006  
Investments at fair value (Notes 2 and 6)
               
Shares of registered investment companies
  $ 211,033,183     $ 153,944,653  
Common collective trusts
    21,035,201       146,719,354  
Stock funds and self-directed accounts
    14,387,053       18,429,472  
Stable Value Fund
    89,577,909        
RAFI Enhanced Large Company Fund
    33,227,145        
Participant loans
    6,377,189       5,317,701  
 
           
 
    375,637,680       324,411,180  
 
               
Receivables
               
Employee contributions
    889,851       852,919  
Employer matching contributions
    347,410       312,967  
Employer profit sharing discretionary contribution
    7,533,707       11,876,545  
Accrued interest
    21,421       15,950  
 
           
Net assets available for benefits at fair value
    384,430,069       337,469,561  
 
               
Adjustment from fair value to contract value for interest in collective trust relating to fully benefit-responsive contracts
    (1,683,438 )      
 
           
Net assets available for benefits
  $ 382,746,631     $ 337,469,561  
 
           
The accompanying notes are an integral part of these financial statements.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Statement of Changes in Net Assets Available for Benefits
Fiscal Year Ended December 29, 2007
 
         
    2007  
Additions
       
Employee contributions
  $ 23,858,850  
Employee rollovers
    16,366,083  
Employer contributions (including discretionary contribution)
    15,025,271  
Net appreciation from shares of registered investment companies
    9,539,881  
Net appreciation from common/collective trust funds
    1,237,911  
Net depreciation from stock funds and self-directed accounts
    (4,049,655 )
Net appreciation from the Stable Value Fund
    2,868,637  
Net depreciation from the RAFI Enhanced Large Company Fund
    (487,288 )
Interest and dividend income
    16,803,050  
 
     
Total additions
    81,162,740  
 
     
Deductions
       
Distributions to withdrawing participants
    35,661,705  
Administrative expenses
    223,965  
 
     
Total deductions
    35,885,670  
 
     
Net increase
    45,277,070  
 
       
Net assets available for benefits
       
Beginning of year
    337,469,561  
 
     
End of year
  $ 382,746,631  
 
     
The accompanying notes are an integral part of these financial statements.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
1.   Major Features of the Plan
 
    WESCO Distribution, Inc. Retirement Savings Plan (the “Plan”) was established as of February 28, 1994 (date of inception). At the date of inception, certain employees of the predecessor company became employees of WESCO Distribution, Inc. (the “Company”) and participants in the Plan. At the date of inception, all funds held by the prior plans related to the transferred employees were transferred to the Plan.
 
    The Plan covers the current employees of the Company and those former employees with a fund balance of at least $5,000 who elected to maintain their funds in the Plan. Former employees cannot make contributions to the Plan.
 
    As a result of the acquisition of Communications Supply Holdings, Inc. on November 3, 2006, approximately 800 participants were added to the Plan. These participants did not rollover their balances until 2007.
 
    Contributions
 
    The Plan is subject to the Employee Retirement Income Security Act of 1974 (“ERISA”). Participants may elect to make tax deferred contributions ranging from 1% up to the lesser of 50% of their compensation or $15,500. The $15,500 limit may be adjusted in future years by the Internal Revenue Service (“IRS”). The sum of the tax deferred contributions and the after-tax contributions cannot exceed 50% of the participant’s compensation. Subject to limitation, the Company will make matching contributions in an amount equal to 50% of a participant’s total monthly contributions up to a maximum of 3% of their compensation. Participants who have attained age 50 before the close of the plan year are eligible to make catch-up contributions in addition to pre-tax contributions. A catch-up contribution is a pre-tax contribution that exceeds the annual deferral limit ($15,500 in 2007). A participant’s total catch-up contribution cannot exceed $5,000. The catch up contribution limits are determined by the IRS and then indexed for inflation after 2007. In addition, the Company may, at the Board of Directors’ discretion, make a discretionary contribution to the Plan provided certain predetermined profit levels are attained. The Company made discretionary contributions of $7,533,707 and $11,876,545 for the fiscal years ended December 29, 2007 and 2006, respectively.
 
    Vesting
 
    Participants are fully vested in the value of their contributions and related investment income at all times and vest in their allocated share of employer contributions according to the following schedule:
         
Less than two years of service
    0 %
Two years of service
    20 %
Three years of service
    40 %
Four years of service
    66 %
Five or more years of service
    100 %
    In conjunction with a leveraged recapitalization of the Company all active employees as of June 5, 1998 became fully vested.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
    Forfeitures
 
    Employer contributions forfeited by participants not vested at their termination date are used to reinstate previously forfeited account balances of former participants who have returned to employment with the Company, or to reduce employer contributions in accordance with the plan document. Total forfeitures that reduced employer contributions in 2007 and 2006 were approximately $1,240,000 and $1644,000, respectively. As of December 29, 2007, a balance of approximately $97,400 was available to reduce employer contributions in 2008.
 
    Participant Accounts
 
    An account is maintained for each participant, which is credited with the participant’s contributions and an allocation of Company contributions, plan earnings and administrative expenses. Allocations are based on participant contributions or account balances, as defined by the Plan. The benefit to which a participant is entitled is the benefit that can be provided from that participant’s account.
 
    Reclassification
 
    Certain 2006 balances have been reclassified to conform with current year presentation.
 
2.   Summary of Significant Accounting Policies
 
    Accounting Principles
 
    The financial statements of the Plan have been prepared in accordance with accounting principles generally accepted in the United States of America. The following are the significant accounting policies followed by the Plan:
 
    Basis of Accounting
 
    The accounting records of the Plan are maintained on the accrual basis of accounting.
 
    As described in Financial Accounting Standards Board Staff Position, FSP AAG INV-1 and SOP 94-4-1, Reporting of Fully Benefit-Responsive Investment Contracts Held by Certain Investment Companies Subject to the AICPA Investment Company Guide and Defined-Contribution Health and Welfare and Pension Plans (the FSP), investment contracts held by a defined-contribution plan are required to be reported at fair value. However, contract value is the relevant measurement attribute for that portion of the net assets available for benefits of a defined-contribution plan attributable to fully benefit-responsive investment contracts because contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the plan. As required by the FSP, the Statement of Net Assets Available for Benefits presents the fair value of the investment contracts as well as the adjustment of the fully benefit-responsive investment contracts from fair value to contract value. The Statement of Changes in Net Assets Available for Benefits is prepared on a contract value basis.
 
    Investment Valuation and Income Recognition
 
    Investments are carried at fair value in the accompanying financial statements. The Plan’s assets are invested in the common stock of WESCO International, Inc. through a unitized stock fund, which includes investments in a money market fund for liquidity purposes. In addition, the plan offers a self directed brokerage account. Investments in common stocks are valued at quoted market prices. Investments in the RAFI Enhanced Large Company Fund are unitized and valued using an index strategy. Shares of registered investment companies are valued at the net asset

7


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
    value of shares held by the Plan at year end. The Plan’s interest in the Stable Value Fund and collective trusts are valued based on information reported by the investment advisor using the audited financial statements of the collective trust. Participant loans are valued at cost, which approximates fair value.
 
    Purchases and sales of securities are recorded on a settlement date basis. Dividends are recorded on the ex-dividend date. Interest income is recorded on an accrual basis.
 
    Net Appreciation (Depreciation) in Value of Investments
 
    The Plan presents in the statement of changes in net assets available for benefits the net appreciation (depreciation) in the fair value of its investments, which consists of realized gains (losses) and unrealized appreciation (depreciation) in the common/collective trusts, registered investment companies, Stable Value Fund, RAFI Enhanced Large Company Fund, WESCO International stock and other common stocks.
 
    Use of Estimates
 
    The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make significant estimates and assumptions. These may affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of additions and deductions during the reporting period. Actual results could differ from those estimates.
 
    Risks and Uncertainties
 
    The Plan provides for various investment options in any combination of stocks, bonds, fixed income securities and other investment securities. Investment securities are exposed to various risks, such as interest rate, market and credit risk. Due to the level of risk associated with certain investment securities and the level of uncertainty related to changes in the value of investment securities, it is at least reasonably possible that changes in the near-term could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits and the statement of changes in net assets available for benefits.
 
    Other
 
    Administrative expenses, excluding participant loan setup fees, distribution fees, hardship withdrawal fees and consulting fees, are paid by the Company and, therefore, are not expenses of the Plan.
 
    Payment of Benefits
 
    Benefits are recorded when paid.
 
    Recent Accounting Pronouncement
 
    In September 2006, the Financial Accounting Standards Board (the “FASB”) issued SFAS No. 157, Fair Value Measurements (“SFAS 157”) which defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. This statement applies whenever other accounting standards require or permit assets or liabilities to be measured at fair value but does not expand the use of fair value to new accounting transactions. SFAS 157 is effective for all financial assets and financial liabilities to fiscal years beginning after November 15, 2007. As of December 29, 2007, the Plan does not believe the

8


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
    adoption of SFAS 157 will impact the amounts reported in the financial statements, however, additional disclosures may be required about the inputs used to develop the measurements and the effect of certain measurements reported on the financial statements for a fiscal period.
 
3.   Tax Status
 
    The Internal Revenue Service has determined and informed the Company by a letter dated October 15, 2003, that the Plan is designed in accordance with Section 401(a) of the Internal Revenue Code (“IRC”) and, therefore, is exempt from federal taxes under provisions of Section 501(a). Accordingly, no provision for income taxes has been included in the Plan’s financial statements. The Plan has been amended since reviewing the determination letter. However, the Plan administrator and the Plan’s tax counsel believe that the Plan is designed and is currently being operated in compliance with the applicable requirements of the IRC.
 
4.   Employee Loans
 
    Participants are permitted to borrow against a portion of their vested account balance within the prescribed limitations and pursuant to nondiscriminatory rules established by the Administrative Committee. Each loan is to be repaid over a period not to exceed five years.
 
    The interest rate applied to employee loans is established each month by the Administrative Committee at 1% above the PNC Bank prime interest rate. The interest rate on new loans ranged between 5.0% and 10.5% for the fiscal year ended December 29, 2007. Principal and interest payments are generally made through monthly payroll deductions and are credited to the participant’s individual account. Loans of approximately $4,025,000 were made from the Plan and loan principal repayments of approximately $2,459,000 were received by the Plan for the year ended December 29, 2007. Interest of approximately $451,000 was received by the Plan for the year ended December 29, 2007 related to employee loans.
 
5.   Plan Termination
 
    Although the Company has not expressed any intent to do so, it has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event the Plan terminates, participants will become 100% vested in their accounts, and all vested assets shall be distributed to such participants in accordance with the terms of the Plan, or in such other manner, not inconsistent with the requirements of any applicable law or regulation, as the Company may in its sole discretion determine.
 
6.   The Stable Value Fund
 
    During 2007, the Plan began investing in a fully benefit-responsive synthetic GIC with an insurance company as part of offering the Stable Value Fund (the Fund) investment option to participants. Contributions to this fund are used to purchase units of a collective trust vehicle which is invested in high-quality U.S. bonds, including U.S. government treasuries, corporate debt securities, and other high-credit-quality asset-backed securities. The GIC issuer is contractually obligated to repay the principal and a specified interest rate that is guaranteed to the Plan. There are no reserves against contact value for credit risk of the contract issuer or otherwise.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
    The Fund has entered into a wrap contract with an insurance company under which the insurance company provides a guarantee with respect to the availability of funds to make distributions from this investment option. This insurance contract is carried at contract value in the participants’ accounts.
 
    Participant accounts in the Fund are credited with interest at a fixed rate that is reset quarterly based on an agreed-upon formula as defined in the contract. The primary variables which could impact the future crediting rates include (1) the amount and timing of participant contributions, (2) transfers and withdrawals into/out of the contract, (3) the current yield of the assets underlying the contract, (4) the duration of the assets underlying the contract, and (5) the existing difference between fair value of the securities and the contract value of the assets within the insurance contract. The crediting rate of security-backed contracts will track current market yields on a trailing basis. The rate reset allows the contract value to converge with the fair value of the underlying portfolio over time, assuming the portfolio continues to earn the current yield for a period of time equal to the current portfolio duration.
 
    To the extent that the underlying portfolio has unrealized and/or realized losses, a positive adjustment is made when reconciling from fair value to contract value under contract value accounting. As a result, the future crediting rate may be lower over time than the current market rates. Similarly, if the underlying portfolio generates unrealized and/or realized gains, a negative adjustment is made when reconciling from fair value to contract value, and in the future, the crediting rate may be higher than the current market rates. The insurance contract cannot credit an interest rate that is less than zero percent.
 
    Certain events limit the ability of the Plan to transact at contract value with the insurance company. Such events are limited to premature termination of the contracts by the Plan or plan termination. The plan sponsor has not expressed any intention to take either of these actions.
 
    As described in Note 2, because the synthetic GIC is fully benefit-responsive, contract value is the relevant measurement attribute for that portion of the net assets available for benefits attributable to the synthetic GICs. Participants may ordinarily direct the withdrawal or transfer of all or a portion of their investment at contract value. The average yields earned by the Fund at December 29, 2007 are as follows:
         
Average yield for synthetic GICs   2007
 
Based on actual earnings
    4.96 %
Based on interest rate credited to participants
    5.05 %

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2007 and 2006
 
7.   Investments
 
    Investments representing 5% or more of the net assets available for benefits as of December 29, 2007 and 2006 were as follows:
                 
    2007     2006  
 
               
AMCAP Fund
  $ 39,609,971     $ 38,695,861  
American Balanced Fund
    37,193,165       34,396,265  
Columbia Acorn Fund
    33,406,094       34,580,419  
RiverSource Equity Index Fund I *
          34,095,546  
RiverSource Midcap Value Fund
    25,049,255       22,844,600  
RiverSource Stable Capital Fund II*
          75,828,416  
Stable Value Fund*
    89,577,909        
Thornburg International Value Fund*
    33,139,769        
Templeton Foreign Fund*
          20,529,960  
 
*   These funds did not represent 5% or more of the net assets available for benefits as of the respective Plan year-end.
8.   Related Party Transactions
 
    Participants of the Plan may elect to invest in WESCO International, Inc. common stock within the WESCO Pooled Stock Fund. WESCO International, Inc. owns 100% of the Company. Therefore, these transactions qualify as party-in-interest transactions. Purchases and sales within the WESCO Pooled Stock Fund for 2007 were $4,542,000 and $5,535,000, respectively, and purchases and sales for 2006 were $2,433,000 and $5,915,000, respectively. Fees paid by the plan for investment management services amount to $20,000 for the year ended December 29, 2007.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
Alger Institutional Funds
  Alger Midcap Growth Institutional Fund   $ 14,022,035  
   
AMCAP Fund
  AMCAP Fund (Class R-4)     39,609,971  
   
RiverSource Trust
  Midcap Value Fund Class R4     25,049,255  
   
American Funds
  American Balanced Fund (Class A)     37,193,165  
   
Columbia Mutual Funds
  Columbia Acorn Fund (Class A)     33,406,094  
   
Loomis Sayles
  Loomis Sayles Invest Grade Bond     12,283,819  
   
MFS Family of Funds
  MFS Value Fund (Class A)     16,329,075  
   
Thornburg International
  Thornburg International Value Fund     33,139,769  
   
 
         
   
Value of Interest in Registered Investment Companies Total
        211,033,183  
   
 
         
   
 
           
   
Manning & Napier Promix Funds
  Manningnapier Promix Conserv Trust     2,283,223  
   
Manning & Napier Promix Funds
  Manningnapier Promix Extended Trust     5,949,301  
   
Manning & Napier Promix Funds
  Manningnapier Promix Maximum Trust     8,678,932  
   
Manning & Napier Promix Funds
  Manningnapier Promix Moderate Trust     4,123,745  
   
 
         
   
Value of Interest in Common/Collective Trusts Total
        21,035,201  
   
 
         
   
 
           
*  
WESCO International, Inc.
  WESCO International Pooled Stock Fund     8,955,522  
   
ABB Ltd Adr
  Common Stock     19,229  
   
Abitibibowater Inc
  Common Stock     54,470  
   
ADR Cemex
  Common Stock     26,500  
   
AGL Resources
  Common Stock     37,420  
   
Alcatel-Lucent Ads
  Common Stock     419  
   
Altria Group Inc.
  Common Stock     3,798  
   
American Beacon Funds
  Americanbeacon Lg Cap Val Fund     8,215  
   
American Century Investments
  American Century Mid Cap Value Fund     7,020  
   
Apple Inc.
  Common Stock     49,958  
   
Applied Materials
  Common Stock     1,769  
   
Arcadia Resources, Inc.
  Common Stock     1,060  
   
Artisan Funds
  Artisan International Investor Shrs     7,364  
   
Artisan Funds
  Artisan Mid Cap Value Fund     44,281  
   
Authentec Inc
  Common Stock     15,130  
   
B&G Foods Inc
  Common Stock     30,210  
   
Bank America Corp
  Common Stock     4,110  
   
Bemis Co
  Common Stock     7,798  
   
Berkshire Hathaway Inc.
  Common Stock     14,055  
   
Bhp Billiton Ltp-Spon Adr
  Common Stock     7,136  
   
Biotime Inc.
  Common Stock     40  
   
Boeing Co.
  Common Stock     8,825  
   
BP Prudhoe Bay Royalty Trust
  Common Stock     3,148  
   
Brandywine Funds
  Income Fund     36,957  

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
Budget Group Inc.
  Common Stock     13  
   
Burlington Northern Inc
  Common Stock     1,666  
   
Carrington Labs
  Common Stock     166  
   
Caterpillar Inc.
  Common Stock     28,020  
   
CBS Corp. Class B
  Common Stock     163,342  
   
Celgene Corp.
  Common Stock     14,100  
   
Charys Holding Co.
  Common Stock     305  
   
Cheniere Energy Inc
  Common Stock     6,510  
   
Chevron Corp.
  Common Stock     9,486  
   
Circuit City Stores
  Common Stock     415  
   
Cisco
  Common Stock     21,772  
   
Citigroup Inc.
  Common Stock     30,755  
   
Clinical Data Inc.
  Common Stock     5,924  
   
Compass Minerals International
  Common Stock     14,487  
   
Comphania Vale
  Common Stock     6,676  
   
Conocophillips
  Common Stock     6,596  
   
Corning Inc.
  Common Stock     2,411  
   
Corporate Exec Board
  Common Stock     6,062  
   
Costco Whsl Corp. New
  Common Stock     7,514  
   
Creative Technology
  Common Stock     850  
   
CrossTex Energy Inc
  Common Stock     11,340  
   
CTS Corp.
  Common Stock     1,009  
   
Deere & Co
  Common Stock     1,846  
   
Del Global Technologies Corp.
  Common Stock     290  
   
Dodge & Cox Funds
  Balanced Fund     25,929  
   
Dodge & Cox Funds
  Stock Fund     15,978  
   
Dodge & Cox Funds
  Income Fund     86,307  
   
Dynamic Materials Corp
  Common Stock     1,521  
   
Eaton Corp.
  Common Stock     119,218  
   
EI Dupont
  Common Stock     886  
   
Energy Transfer Equity LP
  Common Stock     7,278  
   
ENI Spa-Sponsered ADR
  Common Stock     6,268  
   
Excelsior Funds
  Value & Restructuring Fund     14,776  
   
Exide Technologies
  Common Stock     65,200  
   
Exxon Mobil Corp.
  Common Stock     17,575  
   
Fastenal Company
  Common Stock     8,154  
   
Federal Mogul Corp.
  Common Stock     2,799  
   
Focus Enhancements
  Common Stock     54  
   
Fuel-Tech
  Common Stock     11,370  
   
Gabelli Funds
  Asset Fund     7,206  
   
Gamco International Growth AAA
  Foreign Large Growth Fund     9,518  
   
Gamesa Corporation Tecnologishs
  Common Stock     6,975  
   
Genentech Inc
  Common Stock     675  
   
General Electric
  Common Stock     13,442  
   
Genesis Microchip, Inc.
  Common Stock     4,499  
   
Goldcorp Inc.
  Common Stock     3,480  

13


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
Halliburton Co
  Common Stock     23,382  
   
Hawaiian Electric Ind. Inc.
  Common Stock     8,591  
   
Headwaters Inc.
  Common Stock     1,204  
   
Hewlett Packard
  Common Stock     10,272  
   
I Shares
  S&P Trust Fund     165,405  
   
I Shares
  DJ Select Dividend Index Fund     57,103  
   
I Shares
  DJ U.S. Consumer Cycl SEC Fund     3,109  
   
I Shares
  Goldman Sachs Nat Res Ind Fund     60,275  
   
I Shares
  Silver Trust     77,656  
   
I Shares
  S&P Global 100     6,534  
   
I Shares
  S&P Gloal Finl Sector     8,759  
   
I Shares
  S&P Global Utilities     18,526  
   
I Shares
  TR     10,249  
   
Icon Funds
  Icon Healthcare Fund     52,952  
   
Integral Technologies Inc.
  Common Stock     6,555  
   
Intel Corp.
  Common Stock     5,352  
   
Intermec Inc
  Common Stock     1,030  
   
Interplay Entertainment
  Common Stock     80  
   
Intl Speedway
  Common Stock     7,420  
   
Invio Biomedical Corp.
  Common Stock     1,335  
   
Ivanhoe Energy, Inc.
  Common Stock     160  
   
Jacobs Engr Group Inc
  Common Stock     981  
   
Janus Funds
  Enterprise Fund     24,281  
   
Janus Funds
  Mid Cap Value Fund     25,375  
   
Janus Funds
  Orion Fund     13,276  
   
Janus Funds
  Special Equity Fund     9,643  
   
Janus Funds
  Overseas Fund     130,618  
   
Johnson & Johnson
  Common Stock     5,593  
   
J.P. Morgan Chase & Co.
  Common Stock     8,652  
   
Kaire Holdings Inc.
  Common Stock     12  
   
Keryx Biopharmaceuticals
  Common Stock     1,712  
   
Kinder Morgan Energy Partners LP
  Common Stock     8,178  
   
Kinetics Paradigm Fund
  Common Stock     20,286  
   
Kinross Gold Corp
  Common Stock     5,631  
   
Koko Petroleum Inc.
  Common Stock     60  
   
Kraft Foods
  Common Stock     1,120  
   
Lennar Corp
  Common Stock     875  
   
Lowes Companies
  Common Stock     6,798  
   
Managers Intermediate Duration Govt
  Fund     52,325  
   
Manhattan Pharmaceuticals
  Common Stock     468  
   
Manitowoc Inc
  Common Stock     11,536  
   
Mannkind Corp
  Common Stock     3,204  
   
Market Vectors Etf Tr
  Exchange Traded Funds     9,107  
   
Marriott International Inc Class A
  Common Stock     1,706  
   
Marsico 21st Century Fund
  Large Growth Fund     9,606  
   
Matrix Advisors Value
  Common Stock     47,654  

14


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
Maxwell Technologies Inc
  Common Stock     1,792  
   
McDermott Intl
  Common Stock     13,671  
   
MEMC Electronic Materials
  Common Stock     8,963  
   
Merck & Co.
  Common Stock     7,045  
   
MGRS Fremont Micro Cap MGRS Fd
  Common Stock     10,229  
   
Miramar Mining Corp.
  Common Stock     23,643  
   
Mobility Electronics
  Common Stock     19,199  
   
Nabors Industries Ltd.
  Common Stock     2,761  
   
Nanoforce Inc.
  Common Stock     6  
   
Nastech Pharmaceutical Co.
  Common Stock     794  
   
Neomedia Technologies
  Common Stock     119  
   
Neuberger Berman Real Estate Fund
  Real Estate Fund     16,379  
   
Newcastle Investment Corp.
  Common Stock     2,459  
   
Nokia Corp.
  Common Stock     9,685  
   
Oakmark Funds
  Oakmark Equity and Income Fund (I)     32,632  
   
Oakmark Funds
  Oakmark Fund     13,522  
   
Oakmark Funds
  Oakmark International Fund (Class I)     11,936  
   
Oakmark Funds
  Oakmark Global Fund     58,449  
   
Oneok Partners LP
  Common Stock     9,300  
   
Oracle Systems
  Common Stock     6,891  
   
Palomar Medical Tech
  Common Stock     31,920  
   
Paychex Inc.
  Common Stock     5,489  
   
Pentair Inc
  Common Stock     1,052  
   
Petrohawk Energy Corp.
  Common Stock     4,712  
   
Photoworks, Inc.
  Common Stock     23  
   
PIMCO Funds
  PIMCO Total Return Fund     8,990  
   
PNC Financial Services Group
  Common Stock     1,838  
   
Powershares Global Water Portfolio
  Exchange Traded Funds     13,026  
   
Purchase Pro.com
  Common Stock     2  
   
Qualcomm Inc.
  Common Stock     9,893  
   
Rayonier Inc
  Common Stock     24,554  
   
Reliant Energy, Inc.
  Common Stock     78,510  
   
Renovo Holdings, Inc.
  Common Stock     1  
   
Reserve Primary Fund
  Primary Fund     1,332,192  
   
Royce Total Return Fund
  Common Stock     7,104  
   
RS Partners Growth Fund
  Common Stock     4,345  
   
RVS Diversified Equity Income R4
  Mutual Fund     9,149  
   
RVS Strategic Allocation Class R4
  Mutual Fund     32,500  
   
Sasol LTD ADR
  Common Stock     16,635  
   
Schering-Plough
  Common Stock     5,388  
   
Schlumberger LTD
  Common Stock     19,760  
   
Shaw Group Inc.
  Common Stock     6,136  
   
Silver Star Energy
  Common Stock     16  
   
Sirius Satellite Radio Inc.
  Common Stock     1,836  
   
Sound Shore Fund
  Common Stock     7,113  
   
Spectra Energy Corp
  Common Stock     6,495  

15


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
SSGA International Stk Selection FD
  Mutual Fund     58,747  
   
Streettracks Gold Trust
  Exchange Traded Funds     80,344  
   
Sun Microsystems
  Common Stock     455  
   
Sysco Corp.
  Common Stock     7,466  
   
T. Rowe Price Funds
  Capital Appreciation Fund     123,060  
   
T. Rowe Price Funds
  Dividend Growth Fund     5,495  
   
T. Rowe Price Funds
  Growth Stock Fund     81,820  
   
T. Rowe Price Funds
  Media & Telecomm Fund     20,408  
   
T. Rowe Price Funds
  Health Sciences Fund     25,312  
   
T. Rowe Price Funds
  New Asia Fund     62,511  
   
T. Rowe Price Funds
  New Era Fund     178,543  
   
TCW Equities-N
  Large Blend Fund     19,921  
   
TEJON Ranch Co
  Common Stock     4,097  
   
The Muhlenkamp Fund
  Mutual Fund     9,291  
   
Third Avenue
  International Value Fund     13,368  
   
Third Avenue
  Real Estate Value Fund     6,180  
   
Thompson Plumb and Associates
  Growth Fund     5,362  
   
3M Company
  Common Stock     14,976  
   
Time Warner Inc.
  Common Stock     1,665  
   
Transocean Inc.
  Common Stock     10,075  
   
TVIA Inc.
  Common Stock     102  
   
Under Armoir Inc
  Common Stock     46,706  
   
Unigene Labs Inc.
  Common Stock     8,316  
   
US Bancorp
  Common Stock     12,724  
   
Valeant Pharmaceuticals Intl.
  Common Stock     1,194  
   
Vanguard Funds
  International Growth Fund     27,986  
   
Vanguard Funds
  International Value Fund     27,135  
   
Vanguard Funds
  Target Ret 2015     160,612  
   
Vanguard Funds
  Wellesley Income Fund     23,263  
   
Vanguard Funds
  Windsor II Fund     30,881  
   
Vecima Networks Inc
  Common Stock     8  
   
Viacom Inc. Class B
  Common Stock     259,169  
   
Vioquest Pharmaceuticals
  Common Stock     6  
   
Walgreen Co
  Common Stock     7,724  
   
Wasatch Heritage Growth Fund
  Growth Fund     10,395  
   
White Mountains Insurance Group
  Common Stock     5,592  
   
Whole Food Market Inc
  Common Stock     1,040  
   
Windstream Corp
  Common Stock     38,490  
   
Wisdomtree Intl DVD TOP 100
  International Fund     33,716  
   
Wisdomtree Intl & Sector Fund
  International Fund     21,559  
   
Yahoo Inc
  Common Stock     23,442  
   
 
         
   
Stock Funds and Self-Directed Accounts Total
        14,387,053  
   
 
         

16


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
Institutional Enhanced Index Fixed
           
   
Income Fund
  Common Collective Trust     89,577,909  
   
Wrapper Contract
  Wrapper Contract      
   
 
         
   
Stable Value Fund Total
        89,577,909  
   
 
         
   
 
           
   
3M CO COM
  Common Stock     166,351  
   
ABBOTT LABS COM
  Common Stock     127,680  
   
ABERCROMBIE & FITCH CO CL A
  Common Stock     5,199  
   
ABITIBIBOWATER INC COM
  Common Stock     2,765  
   
ABM INDS INC COM
  Common Stock     4,212  
   
ABX HOLDINGS INC COM
  Common Stock     2,600  
   
ACCO BRANDS CORP COM
  Common Stock     3,324  
   
ACTIVISION INC NEW COM NEW
  Common Stock     6,615  
   
ACUITY BRANDS INC
  Common Stock     5,279  
   
ADOBE SYS INC COM
  Common Stock     5,581  
   
ADVANCE AUTO PARTS COM
  Common Stock     13,169  
   
ADVANCED MEDICAL OPTICS COM
  Common Stock     2,558  
   
ADVANCED MICRO DEVICES INC COM
  Common Stock     5,153  
   
AES CORP COM
  Common Stock     22,743  
   
AETNA INC COM
  Common Stock     64,004  
   
AFFILIATED COMPUTER SVCS INC CL
  Common Stock     8,080  
   
AFLAC INC COM
  Common Stock     75,238  
   
AGCO CORP COM
  Common Stock     24,667  
   
AGILENT TECHNOLOGIES INC COM
  Common Stock     19,420  
   
AGL RES INC COM
  Common Stock     12,611  
   
AIR PRODUCTS & CHEMICALS INC COM
  Common Stock     37,496  
   
AIRGAS INC COM
  Common Stock     5,393  
   
AK STEEL HLDG CORP COM
  Common Stock     13,656  
   
ALASKA AIR GRP INC COM
  Common Stock     6,097  
   
ALBEMARLE CORP COM
  Common Stock     7,660  
   
ALBERTO-CULVER CO COM
  Common Stock     10,357  
   
ALCOA INC COM
  Common Stock     89,902  
   
ALEXANDER & BALDWIN INC COM
  Common Stock     5,620  
   
ALFA CORP COM
  Common Stock     5,924  
   
ALLEGHANY CORP DEL COM
  Common Stock     8,822  
   
ALLEGHENY ENERGY INC COM
  Common Stock     12,200  
   
ALLEGHENY TECHNOLOGIES INC COM
  Common Stock     8,680  
   
ALLETE INC COM
  Common Stock     3,772  
   
ALLIANCE DATA SYSTEMS CORP
  Common Stock     8,546  
   
ALLIANT ENERGY CORP COM
  Common Stock     22,071  
   
ALLIANT TECHSYSTEMS INC COM
  Common Stock     12,379  
   
ALLIED CAP CORP NEW COM
  Common Stock     5,414  
   
ALLIED WASTE INDS INC COM
  Common Stock     30,833  
   
ALLSTATE CORP COM
  Common Stock     144,775  
   
ALON USA ENERGY INC
  Common Stock     3,525  
   
ALTERA CORP COM
  Common Stock     7,975  
   
ALTRIA GROUP INC COM
  Common Stock     695,110  
   
AMAZON COM INC COM
  Common Stock     27,863  
   
AMBAC FINL GRP INC COM
  Common Stock     3,592  
   
AMERCO COM
  Common Stock     8,711  

17


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
AMEREN CORP COM
  Common Stock     39,026  
   
AMERICAN AXLE & MFG HLDGS INC
  Common Stock     6,124  
   
AMERICAN CAPITAL STRATEGIES LTD
  Common Stock     5,576  
   
AMERICAN EAGLE OUTFITTERS INC
  Common Stock     3,329  
   
AMERICAN ELEC PWR CO INC COM
  Common Stock     92,072  
   
AMERICAN EXPRESS COMPANY COM
  Common Stock     107,018  
   
AMERICAN FINL GRP INC OHIO COM
  Common Stock     14,381  
   
AMERICAN GREETINGS CORP CL A COM
  Common Stock     3,729  
   
AMERICAN HOME MORTGAGE INVES
  Common Stock     3  
   
AMERICAN INTL GRP INC COM
  Common Stock     399,149  
   
AMERIPRISE FINANCIAL INC COM
  Common Stock     37,258  
   
AMERISOURCEBERGEN CORP COM
  Common Stock     77,942  
   
AMGEN INC COM
  Common Stock     51,390  
   
AMR CORP DEL COM
  Common Stock     19,726  
   
ANADARKO PETROLEUM CORP COM
  Common Stock     21,363  
   
ANALOG DEVICES INC COM
  Common Stock     11,614  
   
ANHEUSER BUSCH COS INC COM
  Common Stock     66,591  
   
ANIXTER INTL INC COM
  Common Stock     4,546  
   
ANNALY MTG MGMT INC COM
  Common Stock     5,526  
   
ANNTAYLOR HLDGS INC COM
  Common Stock     5,103  
   
AON CORP COM
  Common Stock     52,763  
   
APACHE CORP COM
  Common Stock     51,514  
   
APARTMENT INVT & MGMT CO CL A
  Common Stock     3,670  
   
APOLLO GRP INC CL A
  Common Stock     16,945  
   
APOLLO INVT CORP COM
  Common Stock     3,984  
   
APPLE INC COM
  Common Stock     114,503  
   
APPLIED INDL TECHNOLOGIES INC
  Common Stock     4,691  
   
APPLIED MATERIALS INC COM
  Common Stock     35,526  
   
APRIA HLTHCARE GRP INC COM
  Common Stock     2,851  
   
ARCH COAL INC COM
  Common Stock     5,143  
   
ARCHER DANIELS MIDLAND CO COM
  Common Stock     68,375  
   
ARROW ELECTRS INC COM
  Common Stock     26,507  
   
ARTHUR J. GALLAGHER & CO COM
  Common Stock     8,467  
   
ARVINMERITOR INC COM
  Common Stock     9,428  
   
ASBURY AUTOMOTIVE GROUP
  Common Stock     4,932  
   
ASHLAND INC
  Common Stock     24,864  
   
ASSOCIATED BANC CORP COM
  Common Stock     13,971  
   
ASSURANT INC COM
  Common Stock     29,598  
   
ASTORIA FINL CORP COM
  Common Stock     10,045  
   
AT&T INC COM
  Common Stock     166,280  
   
ATMOS ENERGY CORP COM
  Common Stock     8,514  
   
AUTODESK INC COM
  Common Stock     6,886  
   
AUTOLIV INC COM
  Common Stock     20,096  
   
AUTOMATIC DATA PROCESSING INC
  Common Stock     55,932  
   
AUTONATION INC DEL COM
  Common Stock     39,201  
   
AUTOZONE INC COM
  Common Stock     20,442  
   
AVALONBAY CMNTYS INC COM
  Common Stock     13,645  
   
AVERY DENNISON CORP COM
  Common Stock     14,741  
   
AVIS BUDGET GROUP INC
  Common Stock     3,029  
   
AVISTA CORP COM
  Common Stock     6,557  
   
AVNET INC COM
  Common Stock     11,707  

18


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
AVON PRODS INC COM
  Common Stock     32,432  
   
AVX CORP NEW COM
  Common Stock     5,744  
   
BAKER HUGHES INC COM
  Common Stock     23,624  
   
BALL CORP COM
  Common Stock     7,468  
   
BANCORPSOUTH INC COM
  Common Stock     7,522  
   
BANK OF AMERICA CORP COM
  Common Stock     776,708  
   
BANK OF HAWAII CORP
  Common Stock     7,974  
   
BANK OF NEW YORK MELLON CORP COM
  Common Stock     149,574  
   
BARNES & NOBLE INC COM
  Common Stock     9,123  
   
BARNES GRP INC
  Common Stock     6,095  
   
BAXTER INTL INC COM
  Common Stock     62,190  
   
BB&T CORP COM
  Common Stock     72,634  
   
BEA SYS INC COM
  Common Stock     9,643  
   
BEAR STEARNS COMPANIES INC COM
  Common Stock     10,307  
   
BEAZER HOMES USA INC COM
  Common Stock     1,130  
   
BECTON DICKINSON & CO COM
  Common Stock     25,145  
   
BED BATH & BEYOND INC COM
  Common Stock     10,742  
   
BELDEN INC COM
  Common Stock     3,600  
   
BELL MICROPRODUCTS INC COM
  Common Stock     4,589  
   
BELO CORP COM SER A
  Common Stock     6,086  
   
BEMIS CO INC COM
  Common Stock     7,141  
   
BENCHMARK ELECTRONICS INC COM
  Common Stock     4,422  
   
BERKLEY W R CORP COM
  Common Stock     17,576  
   
BERKSHIRE HATHAWAY INC DEL CL A
  Common Stock     564,400  
   
BEST BUY INC COM
  Common Stock     70,435  
   
BIG LOTS INC
  Common Stock     2,760  
   
BIO RAD LABS INC CL A
  Common Stock     8,217  
   
BIOGEN IDEC INC
  Common Stock     18,972  
   
BJ SVCS CO COM
  Common Stock     6,662  
   
BJS WHSL CLUB INC COM
  Common Stock     16,338  
   
BLACK & DECKER CORP COM
  Common Stock     15,012  
   
BLACK HILLS CORP COM
  Common Stock     7,676  
   
BLACKBAUD INC
  Common Stock     13,281  
   
BLACKROCK INC COM
  Common Stock     42,993  
   
BLOCK H & R INC COM
  Common Stock     22,178  
   
BLOCKBUSTER INC CL-A COM
  Common Stock     4,990  
   
BLUELINX HOLDINGS INC
  Common Stock     1,916  
   
BLYTH INC COM
  Common Stock     4,112  
   
BMC SOFTWARE INC COM
  Common Stock     6,970  
   
BOEING CO COM
  Common Stock     151,437  
   
BOK FINANCIAL CORP COM (NEW)
  Common Stock     8,436  
   
BORDERS GRP INC COM
  Common Stock     3,581  
   
BORG WARNER INC COM
  Common Stock     11,923  
   
BOSTON PPTYS INC COM
  Common Stock     11,319  
   
BOSTON SCIENTIFIC CORP COM
  Common Stock     15,060  
   
BRIGGS & STRATTON CORP COM
  Common Stock     4,910  
   
BRIGHTPOINT INC COM
  Common Stock     4,922  
   
BRINKER INTL INC COM
  Common Stock     3,628  
   
BRINKS CO/THE
  Common Stock     6,597  
   
BRISTOL-MYERS SQUIBB CO COM
  Common Stock     211,872  
   
BROADCOM CORP COM
  Common Stock     13,288  

19


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
BROWN & BROWN INC COM
  Common Stock     3,835  
   
BROWN-FORMAN CORP CL B COM
  Common Stock     13,314  
   
BRUNSWICK CORP COM
  Common Stock     8,757  
   
BURGER KING HOLDINGS INC
  Common Stock     12,427  
   
BURLINGTON NORTHERN SANTA FE COM
  Common Stock     78,469  
   
C H ROBINSON WORLDWIDE INC COM
  Common Stock     11,938  
   
C R BARD INC COM
  Common Stock     13,022  
   
CA INC COM
  Common Stock     15,589  
   
CABELAS INC-CL A
  Common Stock     3,582  
   
CABOT CORP COM
  Common Stock     5,159  
   
CADENCE DESIGN SYS INC COM
  Common Stock     6,931  
   
CAMERON INTERNATIONAL CORP
  Common Stock     18,191  
   
CAMPBELL SOUP CO COM
  Common Stock     26,315  
   
CAPITAL ONE FINANCIAL CORP COM
  Common Stock     57,328  
   
CARDINAL HLTH INC COM
  Common Stock     105,402  
   
CAREER ED CORP COM
  Common Stock     7,304  
   
CARLISLE COS INC COM
  Common Stock     3,875  
   
CARMAX INC COM
  Common Stock     3,820  
   
CARPENTER TECHNOLOGY CORP COM
  Common Stock     7,065  
   
CATERPILLAR INC COM
  Common Stock     74,770  
   
CATHAY BANCORP INC COM
  Common Stock     3,510  
   
CB RICHARD ELLIS GROUP INC-A
  Common Stock     6,365  
   
CBS CORP COM
  Common Stock     79,208  
   
CELANESE CORP COM
  Common Stock     17,320  
   
CELERA GROUP COM APPLIED
  Common Stock     10,447  
   
CENTERPOINT ENERGY INC
  Common Stock     27,498  
   
CENTEX CORP COM
  Common Stock     13,559  
   
CENTRAL GARDEN & PET CO CL A COM
  Common Stock     1,925  
   
CENTURYTEL INC COM
  Common Stock     11,396  
   
CF INDUSTRIES HOLDINGS INC
  Common Stock     11,983  
   
CHARMING SHOPPES COM
  Common Stock     1,969  
   
CHEMTURA CORP
  Common Stock     7,194  
   
CHESAPEAKE ENERGY CORP COM
  Common Stock     8,380  
   
CHEVRON CORP COM
  Common Stock     798,911  
   
CHITTENDEN CORP COM
  Common Stock     5,862  
   
CHOICEPOINT INC COM
  Common Stock     5,991  
   
CHUBB CORP COM
  Common Stock     81,636  
   
CIGNA CORP COM
  Common Stock     54,382  
   
CIMAREX ENERGY CO-W/I
  Common Stock     5,750  
   
CINCINNATI BELL INC COM
  Common Stock     4,273  
   
CINCINNATI FINL CORP COM
  Common Stock     31,949  
   
CINTAS CORP COM
  Common Stock     5,879  
   
CIRCUIT CITY STORES INC COM EXP
  Common Stock     4,748  
   
CISCO SYSTEMS INC COM
  Common Stock     90,259  
   
CIT GROUP HLDGS COM
  Common Stock     5,913  
   
CITADEL BROADCASTING CORP
  Common Stock     397  
   
CITIGROUP INC COM
  Common Stock     352,622  
   
CITIZENS COMMUNICATIONS CO COM
  Common Stock     12,445  
   
CITIZENS REPUBLIC BANCORP INC
  Common Stock     3,836  
   
CITRIX SYS INC COM
  Common Stock     5,988  
   
CITY NATL CORP COM
  Common Stock     8,629  

20


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
CLEAR CHANNEL COMMUNICATIONS INC
  Common Stock     24,980  
   
CLEAR CHANNEL OUTDOOR-CL A
  Common Stock     5,226  
   
CLECO CORP NEW COM
  Common Stock     6,655  
   
CLOROX CO COM
  Common Stock     27,605  
   
CME GROUP INC COM
  Common Stock     6,825  
   
CMS ENERGY CORP COM
  Common Stock     17,763  
   
CNA FINL CORP COM
  Common Stock     32,665  
   
CNX GAS CORP
  Common Stock     5,102  
   
COACH INC COM
  Common Stock     4,022  
   
COCA COLA ENTERPRISES INC COM
  Common Stock     67,932  
   
COCA-COLA CO COM
  Common Stock     225,168  
   
COLGATE-PALMOLIVE CO COM
  Common Stock     80,551  
   
COLLECTIVE BRANDS INC COM
  Common Stock     4,715  
   
COLONIAL BANCGROUP INC COM
  Common Stock     6,224  
   
COMCAST HLDGS INC CL A
  Common Stock     105,634  
   
COMERICA INC COM
  Common Stock     32,789  
   
COMMERCE BANCORP INC NJ COM
  Common Stock     17,296  
   
COMMERCE BANCSHARES INC COM
  Common Stock     10,213  
   
COMMERCE GRP INC MASS COM
  Common Stock     11,618  
   
COMMERCIAL METALS CO COM
  Common Stock     7,425  
   
COMMSCOPE INC COM
  Common Stock     702  
   
COMMUNITY HEALTH SYS INC NEW COM
  Common Stock     5,656  
   
COMPUTER SCIENCES CORP COM
  Common Stock     44,956  
   
COMPUWARE CORP COM
  Common Stock     6,243  
   
COMVERSE TECHNOLOGY INC COM PAR
  Common Stock     3,812  
   
CON-WAY INC COM
  Common Stock     9,288  
   
CONAGRA FOODS INC COM
  Common Stock     73,396  
   
CONOCOPHILLIPS COM
  Common Stock     373,722  
   
CONSECO INC COM
  Common Stock     14,628  
   
CONSOL ENERGY INC COM
  Common Stock     19,447  
   
CONSOLIDATED EDISON INC COM
  Common Stock     69,872  
   
CONSTELLATION BRANDS INC CL A
  Common Stock     13,481  
   
CONSTELLATION ENERGY GROUP INC
  Common Stock     60,376  
   
CONTINENTAL AIRLINES INC CL B
  Common Stock     12,328  
   
CONVERGYS CORP COM
  Common Stock     5,959  
   
COOPER TIRE & RUBBER CO COM
  Common Stock     4,770  
   
CORE MARK HOLDING CO INC COM
  Common Stock     6,943  
   
CORN PRODS INTL INC COM
  Common Stock     4,556  
   
CORNING INC COM
  Common Stock     20,156  
   
CORUS BANKSHARES INC COM
  Common Stock     3,598  
   
COSTCO WHOLESALE CORP COM
  Common Stock     133,137  
   
COUNTRYWIDE FINANCIAL CORP COM
  Common Stock     12,863  
   
COUSINS PPTYS INC COM
  Common Stock     5,397  
   
COVANCE INC COM
  Common Stock     6,633  
   
COVENTRY HLTH CARE INC COM
  Common Stock     24,917  
   
CRANE CO COM
  Common Stock     7,154  
   
CROWN HOLDINGS INC
  Common Stock     20,720  
   
CSK AUTO CORP COM
  Common Stock     1,212  
   
CSX CORP COM
  Common Stock     54,009  
   
CULLEN FROST BANKERS INC COM
  Common Stock     8,889  
   
CUMMINS INC COM
  Common Stock     36,574  

21


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
CVS CAREMARK CORP COM
  Common Stock     36,800  
   
CYTEC INDS INC COM
  Common Stock     9,335  
   
D R HORTON INC COM
  Common Stock     10,847  
   
DANAHER CORP COM
  Common Stock     16,150  
   
DARDEN RESTAURANTS INC COM
  Common Stock     8,756  
   
DAVITA INC COM
  Common Stock     8,794  
   
DEAN FOODS CO COM
  Common Stock     12,693  
   
DEERE & CO COM
  Common Stock     46,694  
   
DELEK US HOLDINGS INC COM
  Common Stock     5,693  
   
DELL INC COM
  Common Stock     127,395  
   
DELMONTE FOODS CO COM
  Common Stock     7,448  
   
DELPHI FINL GRP INC CL A
  Common Stock     4,875  
   
DENTSPLY INTERNATIONAL INC COM
  Common Stock     8,165  
   
DEVELOPERS DIVERSIFIED RLTY CORP
  Common Stock     2,676  
   
DEVON ENERGY CORPORATION COM
  Common Stock     57,862  
   
DIAMOND OFFSHORE DRILLING INC
  Common Stock     12,590  
   
DICKS SPORTING GOODS INC
  Common Stock     5,091  
   
DIEBOLD INC COM
  Common Stock     4,507  
   
DILLARDS INC CL A COM
  Common Stock     6,141  
   
DIRECTV GRP INC/THE COM
  Common Stock     43,992  
   
DISCOVER FINANCIAL SERVICES COM
  Common Stock     5,632  
   
DISCOVERY HOLDING CO-A COM
  Common Stock     9,874  
   
DISNEY (WALT) COMPANY HOLDING
  Common Stock     80,920  
   
DOLLAR THRIFTY AUTOMOTIVE COM
  Common Stock     2,643  
   
DOLLAR TREE STORES INC COM
  Common Stock     4,390  
   
DOMINION RESOURCES INC/VA COM
  Common Stock     97,485  
   
DONALDSON CO INC. COM
  Common Stock     7,225  
   
DONNELLEY R R & SONS CO COM
  Common Stock     20,535  
   
DOVER CORP COM
  Common Stock     13,718  
   
DOW CHEMICAL COM
  Common Stock     189,465  
   
DOWNEY FINL CORP COM
  Common Stock     3,202  
   
DPL INC COM
  Common Stock     14,187  
   
DREAMWORKS ANIMATION SKG-A
  Common Stock     4,147  
   
DRESSER RAND GROUP INC COM
  Common Stock     5,559  
   
DST SYS INC DEL COM
  Common Stock     10,798  
   
DTE ENERGY CO COM
  Common Stock     20,548  
   
DU PONT E I DE NEMOURS & CO COM
  Common Stock     154,164  
   
DUKE ENERGY CORP COM
  Common Stock     89,063  
   
DUKE RLTY INVTS INC COM NEW
  Common Stock     4,205  
   
DUN & BRADSTREET CORP COM
  Common Stock     5,858  
   
DYNEGY INC COM CL A
  Common Stock     5,773  
   
E M C CORP MASS COM
  Common Stock     40,679  
   
E*TRADE FINANCIAL CORP COM
  Common Stock     3,544  
   
EARTHLINK INC COM
  Common Stock     4,629  
   
EAST WEST BANCORP INC COM
  Common Stock     2,640  
   
EASTMAN CHEMICAL COMPANY COM
  Common Stock     17,304  
   
EASTMAN KODAK CO COM
  Common Stock     42,507  
   
EATON CORP COM
  Common Stock     30,977  
   
EATON VANCE CORP COM NON VTG
  Common Stock     7,096  
   
EBAY INC COM
  Common Stock     34,861  
   
ECHOSTAR COMMUNICATIONS NEW CL A
  Common Stock     7,567  

22


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
ECOLAB INC COM
  Common Stock     24,265  
   
EDISON INTL COM
  Common Stock     71,210  
   
EL PASO CORP COM
  Common Stock     31,542  
   
ELECTRONIC ARTS COM
  Common Stock     23,190  
   
ELECTRONIC DATA SYS CORP NEW COM
  Common Stock     45,461  
   
EMBARQ CORP-W/I
  Common Stock     18,960  
   
EMCOR GRP INC COM
  Common Stock     7,755  
   
EMERSON ELECTRIC CO COM
  Common Stock     91,818  
   
ENDO PHARMACEUTICALS HLDGS INC
  Common Stock     4,304  
   
ENERGEN CORP COM
  Common Stock     10,316  
   
ENERGIZER HLDGS INC COM
  Common Stock     12,766  
   
ENERGY EAST CORP COM
  Common Stock     22,078  
   
ENSCO INTL INC COM
  Common Stock     5,462  
   
ENTERGY CORP NEW COM
  Common Stock     80,775  
   
EOG RES INC COM
  Common Stock     18,457  
   
EQUIFAX INC COM
  Common Stock     5,039  
   
EQUITABLE RES INC COM
  Common Stock     10,527  
   
EQUITY RESIDENTIAL SH BEN INT
  Common Stock     9,292  
   
ERIE INDTY CO CL A
  Common Stock     9,076  
   
ESSEX PPTY TR INC COM
  Common Stock     3,909  
   
EXELON CORP COM
  Common Stock     147,644  
   
EXPEDIA INC
  Common Stock     20,301  
   
EXPEDITORS INTL WASH INC COM
  Common Stock     10,710  
   
EXPRESS SCRIPTS INC CL A COM
  Common Stock     57,031  
   
EXPRESSJET HOLDINGS INC
  Common Stock     2,185  
   
EXTERRAN HOLDINGS INC COM
  Common Stock     9,101  
   
EXXON MOBIL CORP COM
  Common Stock     1,457,205  
   
F N B CORP PA COM
  Common Stock     4,565  
   
FAIRCHILD SEMICON INTL COM
  Common Stock     5,505  
   
FAMILY DOLLAR STORES INC COM
  Common Stock     9,495  
   
FBL FINL GRP INC CL A
  Common Stock     3,930  
   
FEDERAL NATIONAL MORTGAGE ASSN
  Common Stock     44,129  
   
FEDERATED INVS INC PA CL B
  Common Stock     8,388  
   
FEDEX CORP COM
  Common Stock     75,033  
   
FERRO CORP COM
  Common Stock     5,758  
   
FIDELITY NATIONAL FINANCIAL — A
  Common Stock     15,287  
   
FIDELITY NATIONAL INFORMATION
  Common Stock     9,536  
   
FIFTH THIRD BANCORP COM
  Common Stock     59,011  
   
FIRST AMERN CORP CALIF COM (FROM
  Common Stock     14,706  
   
FIRST CITIZENS BANCSHARES INC CL
  Common Stock     4,234  
   
FIRST COMWLTH FINL CORP PA COM
  Common Stock     4,453  
   
FIRST HORIZON NATIONAL CORP COM
  Common Stock     11,686  
   
FIRST MIDWEST BANCORP INC DEL
  Common Stock     4,963  
   
FIRST NIAGARA FINL GROUP INC NEW
  Common Stock     5,106  
   
FIRSTENERGY CORP COM
  Common Stock     48,931  
   
FIRSTFED FINL CORP DEL COM
  Common Stock     2,509  
   
FIRSTMERIT CORP COM
  Common Stock     9,206  
   
FISERV INC WIS COM
  Common Stock     21,123  
   
FLAGSTAR BANCORO INC COM
  Common Stock     4,049  
   
FLOWERS FOODS INC COM
  Common Stock     5,908  
   
FLOWSERVE CORP COM
  Common Stock     14,733  

23


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
FLUOR CORP NEW COM
  Common Stock     33,932  
   
FMC CORP COM NEW
  Common Stock     14,735  
   
FMC TECHNOLOGIES INC
  Common Stock     15,772  
   
FOOT LOCKER INC
  Common Stock     5,746  
   
FORD MTR CO COM
  Common Stock     149,933  
   
FOREST LABS CL A
  Common Stock     15,161  
   
FOREST OIL CORP COM
  Common Stock     12,175  
   
FORTUNE BRANDS INC COM
  Common Stock     16,772  
   
FOUNDATION COAL HOLDINGS INC
  Common Stock     11,025  
   
FPL GROUP INC COM
  Common Stock     46,524  
   
FRANKLIN RES INC COM
  Common Stock     34,813  
   
FREDDIE MAC COM VTG
  Common Stock     41,474  
   
FREEPORT MCMORAN COPPER & GOLD
  Common Stock     62,835  
   
FREMONT GENERAL CORP COM
  Common Stock     2,451  
   
FRONTIER OIL CORP COM
  Common Stock     8,138  
   
FULLER H B CO COM
  Common Stock     4,573  
   
FULTON FINANCIAL CORP COM
  Common Stock     7,939  
   
FURNITURE BRANDS INTL INC COM
  Common Stock     2,953  
   
GANNETT CO COM
  Common Stock     41,977  
   
GAP INC COM
  Common Stock     60,299  
   
GATX CORP COM
  Common Stock     7,381  
   
GENENTECH INC COM
  Common Stock     47,392  
   
GENERAL CABLE CORP DEL NEW COM
  Common Stock     5,906  
   
GENERAL DYNAMICS CORP COM
  Common Stock     86,824  
   
GENERAL ELECTRIC CO COM
  Common Stock     403,757  
   
GENERAL GROWTH PPTYS INC COM
  Common Stock     5,434  
   
GENERAL MILLS INC COM
  Common Stock     33,183  
   
GENERAL MOTORS CORP COM
  Common Stock     150,004  
   
GENLYTE GRP INC COM
  Common Stock     6,950  
   
GENTEK INC GENTEX INC
  Common Stock     5,704  
   
GENTEX CORP COM
  Common Stock     5,574  
   
GENUINE PARTS CO COM
  Common Stock     23,290  
   
GENWORTH FINANCIAL INC COM
  Common Stock     45,912  
   
GENZYME CORP COM -GEN DIV
  Common Stock     20,441  
   
GETTY IMAGES INC COM
  Common Stock     2,317  
   
GILEAD SCIENCES INC COM
  Common Stock     19,181  
   
GOLDMAN SACHS GROUP INC COM
  Common Stock     72,060  
   
GOODRICH CORP COM
  Common Stock     26,961  
   
GOODYEAR TIRE & RUBBER CO COM
  Common Stock     19,986  
   
GOOGLE INC-CL A
  Common Stock     31,614  
   
GRACE W R & CO DEL NEW COM
  Common Stock     4,965  
   
GRANITE CONSTR INC COM
  Common Stock     3,618  
   
GREAT ATLANTIC & PAC TEA INC COM
  Common Stock     12,555  
   
GREAT PLAINS ENERGY INC
  Common Stock     6,365  
   
GREIF BROS CORP A
  Common Stock     9,271  
   
GROUP 1 AUTOMOTIVE INC COM
  Common Stock     4,126  
   
HALLIBURTON CO COM
  Common Stock     83,226  
   
HANESBRANDS INC COM
  Common Stock     9,772  
   
HANOVER INSURANCE GROUP COM
  Common Stock     8,305  
   
HARLEY DAVIDSON INC COM
  Common Stock     12,212  
   
HARMAN INTL INDS INC NEW COM
  Common Stock     5,096  

24


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
HARRAHS ENTMT INC COM
  Common Stock     9,301  
   
HARRIS CORP DEL COM
  Common Stock     5,078  
   
HARSCO CORP COM
  Common Stock     8,620  
   
HARTE-HANKS INC. NEW COM
  Common Stock     3,221  
   
HARTFORD FINANCIAL SERVICES GRP
  Common Stock     93,512  
   
HASBRO INC COM
  Common Stock     10,753  
   
HAWAIIAN ELEC INDS INC COM
  Common Stock     11,875  
   
HCC INS HLDGS INC COM
  Common Stock     7,095  
   
HEALTH NET INC COM
  Common Stock     26,605  
   
HEARST-ARGYLE TELEVISION INC COM
  Common Stock     3,703  
   
HEINZ H J CO COM
  Common Stock     56,431  
   
HERCULES INC COM
  Common Stock     7,852  
   
HERSHEY COMPANY COM
  Common Stock     20,682  
   
HERTZ GLOBAL HOLDINGS INC COM
  Common Stock     15,226  
   
HESS CORP COM
  Common Stock     126,863  
   
HEWITT ASSOC INC CL A
  Common Stock     13,520  
   
HEWLETT-PACKARD CO COM
  Common Stock     351,046  
   
HILLENBRAND INDS INC COM
  Common Stock     7,505  
   
HNI CORP COM
  Common Stock     4,374  
   
HOLLY CORP COM PAR $0.01
  Common Stock     5,034  
   
HOME DEPOT INC COM
  Common Stock     84,255  
   
HONEYWELL INTL INC COM
  Common Stock     124,481  
   
HORMEL FOODS CORP COM
  Common Stock     13,533  
   
HOSPIRA INC COM
  Common Stock     10,563  
   
HOSPITALITY PPTYS TR SH BEN INT
  Common Stock     4,975  
   
HOVNANIAN ENTERPRISES INC CL A
  Common Stock     2,220  
   
HUBBELL INC CL B COM
  Common Stock     7,043  
   
HUDSON CITY BANCORP INC COM
  Common Stock     11,240  
   
HUMANA INC COM
  Common Stock     45,928  
   
HUNT J B TRANS SVCS INC COM
  Common Stock     5,734  
   
HUNTINGTON BANCSHARES INC COM
  Common Stock     23,871  
   
HUNTSMAN CORPORATION COM
  Common Stock     46,365  
   
IAC / INTERACTIVECORP COM
  Common Stock     28,205  
   
IDACORP INC COM
  Common Stock     6,260  
   
IDEX CORP COM
  Common Stock     5,673  
   
IKON OFFICE SOLUTIONS INC COM
  Common Stock     8,506  
   
ILLINOIS TOOL WORKS INC COM
  Common Stock     38,314  
   
IMATION CORP COM
  Common Stock     2,993  
   
IMS HEALTH INC COM
  Common Stock     5,198  
   
INDYMAC BANCORP INC COM
  Common Stock     1,642  
   
INGRAM MICRO INC CL A
  Common Stock     54,492  
   
INTEGRYS ENERGY GROUP INC COM
  Common Stock     10,966  
   
INTEL CORP COM
  Common Stock     255,665  
   
INTERNATIONAL PAPER CO COM
  Common Stock     87,299  
   
INTERPUBLIC GRP COS INC COM
  Common Stock     6,708  
   
INTERSIL HLDG CORP COM
  Common Stock     4,171  
   
INTL BUSINESS MACHINES CORP COM
  Common Stock     395,333  
   
INTL FLAVORS & FRAGRANCES INC
  Common Stock     11,141  
   
INTL GAME TECHNOLOGY COM
  Common Stock     15,439  
   
INTUIT COM
  Common Stock     15,655  
   
IOMEGA CORP COM
  Common Stock     3,843  

25


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
IRON MTN INC PA COM
  Common Stock     7,367  
   
ISTAR FINANCIAL INC COM
  Common Stock     4,006  
   
ITT CORP COM
  Common Stock     25,097  
   
JABIL CIRCUIT INC COM
  Common Stock     12,493  
   
JACK IN THE BOX INC COM
  Common Stock     5,933  
   
JACOBS ENGR GRP INC COM
  Common Stock     31,288  
   
JANUS CAPITAL GROUP INC
  Common Stock     7,614  
   
JARDEN CORP COM
  Common Stock     2,950  
   
JEFFERIES GROUP INC COM
  Common Stock     5,921  
   
JOHNSON & JOHNSON COM
  Common Stock     397,879  
   
JOHNSON CTLS INC COM
  Common Stock     47,803  
   
JONES APPAREL GRP INC COM
  Common Stock     5,704  
   
JOY GLOBAL INC COM
  Common Stock     9,302  
   
JP MORGAN CHASE & CO COM
  Common Stock     450,423  
   
JUNIPER NETWORKS INC COM
  Common Stock     13,772  
   
KANSAS CITY SOUTHN COM
  Common Stock     6,876  
   
KB HOME COM
  Common Stock     7,315  
   
KBR INC COM
  Common Stock     43,384  
   
KELLOGG COMPANY COM
  Common Stock     40,113  
   
KELLWOOD CO COM
  Common Stock     4,093  
   
KELLY SVCS INC CL A
  Common Stock     6,134  
   
KENNAMETAL INC COM
  Common Stock     5,731  
   
KEY ENERGY SVCS INC COM
  Common Stock     3,668  
   
KEYCORP NEW COM
  Common Stock     45,999  
   
KILROY RLTY CORP COM
  Common Stock     3,476  
   
KIMBERLY-CLARK CORP COM
  Common Stock     101,273  
   
KIMCO RLTY CORP COM
  Common Stock     3,531  
   
KINDRED HEALTHCARE INC COM
  Common Stock     7,629  
   
KINETIC CONCEPTS INC COM
  Common Stock     6,017  
   
KING PHARMACEUTICALS INC COM
  Common Stock     3,320  
   
KIRBY CORP COM
  Common Stock     5,914  
   
KLA TENCOR CORP COM
  Common Stock     11,890  
   
KOHLS CORP COM
  Common Stock     12,161  
   
KRAFT FOODS INC CL A COM
  Common Stock     163,004  
   
KROGER CO COM
  Common Stock     137,115  
   
KRONOS WORLDWIDE INC COM
  Common Stock     2,768  
   
L-3 COMMUNICATIONS HLDGS INC COM
  Common Stock     35,777  
   
LA Z BOY INC COM
  Common Stock     2,940  
   
LABORATORY CORP AMER HLDGS COM
  Common Stock     10,275  
   
LAM RESEARCH CORP COM
  Common Stock     6,312  
   
LANCASTER COLONY CORP COM
  Common Stock     4,204  
   
LANDAMERICA FINL GRP INC COM
  Common Stock     3,951  
   
LANDSTAR SYS INC COM
  Common Stock     3,986  
   
LAS VEGAS SANDS CORP
  Common Stock     12,844  
   
LAUDER ESTEE COS INC CL A
  Common Stock     17,261  
   
LEAP WIRELESS INTERNATIONAL INC
  Common Stock     3,889  
   
LEAR CORP COM
  Common Stock     23,628  
   
LEGG MASON INC COM
  Common Stock     9,046  
   
LEGGETT & PLATT INC COM
  Common Stock     8,341  
   
LEHMAN BROTHERS HOLDINGS INC COM
  Common Stock     23,795  
   
LENNAR CORP COM CL A
  Common Stock     16,958  

26


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
LENNOX INTERNATIONAL INC COM
  Common Stock     10,540  
   
LEXMARK INTL INC CL A COM
  Common Stock     12,880  
   
LIBERTY GLOBAL INC CL A COM
  Common Stock     21,405  
   
LIBERTY PPTY TR SH BEN INT
  Common Stock     4,573  
   
LILLY ELI & CO COM
  Common Stock     162,312  
   
LIMITED BRANDS INC COM
  Common Stock     29,821  
   
LINCARE HLDGS INC COM
  Common Stock     9,697  
   
LINCOLN NATIONAL CORP COM
  Common Stock     48,871  
   
LINEAR TECHNOLOGY CORP COM
  Common Stock     8,968  
   
LIZ CLAIBORNE INC COM
  Common Stock     5,038  
   
LOCKHEED MARTIN CORP COM
  Common Stock     118,633  
   
LOEWS CORP — CAROLINA GROUP -
  Common Stock     25,302  
   
LOEWS CORP — CAROLINA GROUP COM
  Common Stock     82,908  
   
LONGS DRUG STORES CORP COM
  Common Stock     8,129  
   
LOUISIANA-PAC CORP COM
  Common Stock     6,469  
   
LOWE’S COS INC COM
  Common Stock     41,219  
   
LSI CORP COM
  Common Stock     5,870  
   
LUBRIZOL CORP COM
  Common Stock     12,641  
   
M & T BK CORP COM
  Common Stock     26,709  
   
M.D.C.HOLDINGS INC COM
  Common Stock     6,598  
   
MACK CALI RLTY CORP COM
  Common Stock     2,870  
   
MACY’S INC COM
  Common Stock     11,517  
   
MAGELLAN HEALTH SVCS INC COM
  Common Stock     8,004  
   
MANITOWOC COMPANY INC COM
  Common Stock     9,131  
   
MANPOWER INC WIS COM
  Common Stock     20,187  
   
MARATHON OIL CORP
  Common Stock     192,754  
   
MARKEL HLDGS COM
  Common Stock     13,476  
   
MARRIOTT INTERNATIONAL CL A COM
  Common Stock     21,939  
   
MARSH & MCLENNAN COMPANIES INC
  Common Stock     60,479  
   
MARSHALL & ILSLEY CORP COM
  Common Stock     17,608  
   
MARTIN MARIETTA MATLS INC COM
  Common Stock     9,452  
   
MASCO CORP COM
  Common Stock     46,245  
   
MASSEY ENERGY CO COM
  Common Stock     8,481  
   
MASTERCARD INC-CL A
  Common Stock     23,520  
   
MATTEL INC COM
  Common Stock     19,748  
   
MAXIM INTEGRATED PRODS INC COM
  Common Stock     8,554  
   
MBIA INC COM
  Common Stock     3,823  
   
MCAFEE INC COM
  Common Stock     8,805  
   
MCCORMICK & CO INC COM
  Common Stock     9,438  
   
MCDONALDS CORP COM
  Common Stock     107,338  
   
MCGRAW HILL COS INC
  Common Stock     26,667  
   
MCKESSON CORP COM
  Common Stock     129,506  
   
MDU RES GRP INC COM
  Common Stock     17,661  
   
MEADWESTVACO CORP COM
  Common Stock     13,164  
   
MEDCO HEALTH SOLUTIONS INC COM
  Common Stock     64,171  
   
MEDTRONIC INC COM
  Common Stock     38,017  
   
MEMC ELECTRONIC MATERIALS INC
  Common Stock     13,086  
   
MERCK & CO INC COM
  Common Stock     400,167  
   
MERCURY GEN CORP NEW COM
  Common Stock     11,764  
   
MERITAGE CORP COM
  Common Stock     2,034  
   
MERRILL LYNCH & CO INC COM
  Common Stock     48,468  

27


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
METAVANTE TECHNOLOGIES COM
  Common Stock     5,124  
   
METLIFE INC COM
  Common Stock     165,231  
   
METTLER-TOLEDO INTL INC COM
  Common Stock     7,724  
   
MGIC INVESTMENT CORP COM EXP
  Common Stock     4,020  
   
MGM MIRAGE COM
  Common Stock     19,734  
   
MICROCHIP TECHNOLOGY INC COM
  Common Stock     3,408  
   
MICRON TECHNOLOGY INC COM
  Common Stock     7,568  
   
MICROSOFT CORP COM
  Common Stock     443,554  
   
MILLER (HERMAN) INC COM
  Common Stock     4,231  
   
MIRANT CORP COM
  Common Stock     13,948  
   
MODINE MFG CO COM
  Common Stock     3,759  
   
MOHAWK INDS INC COM
  Common Stock     11,811  
   
MOLEX INC COM
  Common Stock     7,069  
   
MOLSON COORS BREWING CO -B
  Common Stock     28,458  
   
MONEYGRAM INTERNATIONAL-W/I
  Common Stock     2,237  
   
MONSANTO CO COM
  Common Stock     52,176  
   
MONSTER WORLDWIDE INC COM
  Common Stock     4,955  
   
MOODY’S CORPORATION COM
  Common Stock     6,419  
   
MORGAN STANLEY COM
  Common Stock     40,128  
   
MOSAIC CO/THE
  Common Stock     52,616  
   
MOTOROLA INC COM
  Common Stock     125,258  
   
MUELLER INDS INC COM
  Common Stock     4,909  
   
MURPHY OIL CORP COM
  Common Stock     48,752  
   
MYLAN LABS INC COM
  Common Stock     5,536  
   
NACCO INDS INC CL A COM
  Common Stock     4,270  
   
NALCO HOLDING CO
  Common Stock     7,276  
   
NATIONAL CITY CORP COM
  Common Stock     37,983  
   
NATIONAL FUEL GAS CO NJ COM
  Common Stock     10,636  
   
NATIONAL OILWELL VARCO INC COM
  Common Stock     26,327  
   
NATIONAL SEMICONDUCTOR CORP COM
  Common Stock     8,062  
   
NATIONWIDE FINL SVCS INC CL A
  Common Stock     22,977  
   
NAVISTAR INTL CORP NEW COM
  Common Stock     10,612  
   
NBTY INC COM
  Common Stock     2,714  
   
NCR CORPORATION COM
  Common Stock     9,215  
   
NETWORK APPLIANCE INC COM
  Common Stock     4,102  
   
NEW JERSEY RES CORP COM
  Common Stock     7,703  
   
NEW YORK CMNTY BANCORP INC COM
  Common Stock     25,068  
   
NEW YORK TIMES CO CL A COM
  Common Stock     11,958  
   
NEWALLIANCE BANCSHARES INC
  Common Stock     3,185  
   
NEWELL RUBBERMAID INC COM
  Common Stock     28,805  
   
NEWFIELD EXPL CO COM
  Common Stock     11,742  
   
NEWMONT MNG CORP COM
  Common Stock     21,948  
   
NEWS CORP INC CLASS A COM
  Common Stock     83,389  
   
NICOR INC COM
  Common Stock     10,785  
   
NII HLDGS INC CL B
  Common Stock     3,093  
   
NIKE INC CL B COM
  Common Stock     49,583  
   
NISOURCE INC COM
  Common Stock     25,782  
   
NOBLE ENERGY INC
  Common Stock     5,727  
   
NORDSTROM INC COM
  Common Stock     13,406  
   
NORFOLK SOUTHERN CORP COM
  Common Stock     59,517  
   
NORTHEAST UTILS COM
  Common Stock     25,280  

28


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
NORTHERN TRUST CORP COM
  Common Stock     36,289  
   
NORTHROP GRUMMAN CORP COM
  Common Stock     130,181  
   
NORTHWEST NAT GAS CO COM
  Common Stock     5,771  
   
NOVELL INC COM
  Common Stock     5,206  
   
NOVELLUS SYS COM
  Common Stock     7,772  
   
NRG ENERGY INC COM
  Common Stock     10,284  
   
NSTAR COM
  Common Stock     19,524  
   
NU SKIN ENTERPRISES INC CL A
  Common Stock     4,329  
   
NUCOR CORP COM
  Common Stock     25,374  
   
NVIDIA CORP COM
  Common Stock     19,969  
   
NVR INC COM
  Common Stock     12,875  
   
NYSE EURONEXT COM
  Common Stock     6,477  
   
OCCIDENTAL PETE CORP COM
  Common Stock     120,352  
   
OFFICE DEPOT INC COM
  Common Stock     15,902  
   
OFFICEMAX INC
  Common Stock     5,484  
   
OGE ENERGY CORP COM
  Common Stock     19,287  
   
OLD NATL BANCORP IND COM
  Common Stock     4,953  
   
OLD REP INTL CORP COM
  Common Stock     21,228  
   
OLIN CORP COM
  Common Stock     9,404  
   
OMNICARE INC COM
  Common Stock     2,950  
   
OMNICOM GROUP INC COM
  Common Stock     40,475  
   
ON SEMICONDUCTOR CORP COM
  Common Stock     3,755  
   
ONEOK INC COM
  Common Stock     10,593  
   
ORACLE CORP COM
  Common Stock     97,875  
   
OSHKOSH CORP CL B COM
  Common Stock     4,844  
   
OWENS & MINOR INC NEW COM
  Common Stock     5,440  
   
OWENS ILLINOIS INC COM NEW
  Common Stock     25,000  
   
PACCAR INC COM
  Common Stock     56,591  
   
PACIFIC CAPITAL BANCORP COM
  Common Stock     3,755  
   
PACKAGING CORP AMER COM
  Common Stock     8,524  
   
PACTIV CORP COM
  Common Stock     10,294  
   
PALL CORP COM
  Common Stock     6,900  
   
PANTRY INC PANTRY INC COM
  Common Stock     3,281  
   
PARK NATL CORP COM ++(WAS PARK
  Common Stock     4,198  
   
PARKER HANNIFIN CORP COM
  Common Stock     23,305  
   
PATRIOT COAL CORP COM
  Common Stock     627  
   
PATTERSON COS INC
  Common Stock     4,636  
   
PAYCHEX INC COM
  Common Stock     20,454  
   
PEABODY ENERGY CORP COM
  Common Stock     9,512  
   
PENN NATL GAMING INC COM
  Common Stock     9,730  
   
PENNEY J C INC COM
  Common Stock     26,700  
   
PENSKE AUTO GROUP INC COM
  Common Stock     6,177  
   
PENTAIR INC COM
  Common Stock     8,244  
   
PEOPLE’S UNITED FINANCIAL INC
  Common Stock     6,691  
   
PEPCO HOLDINGS INC
  Common Stock     16,203  
   
PEPSI BOTTLING GRP INC COM
  Common Stock     41,359  
   
PEPSIAMERICAS INC COM
  Common Stock     9,370  
   
PEPSICO INC COM
  Common Stock     165,846  
   
PERFORMANCE FOOD GRP CO COM
  Common Stock     10,705  
   
PERINI CORP COM
  Common Stock     4,203  
   
PERKINELMER INC COM
  Common Stock     9,459  

29


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
PETSMART INC COM
  Common Stock     3,545  
   
PFIZER INC COM
  Common Stock     516,166  
   
PG&E CORP COM
  Common Stock     63,162  
   
PHARMACEUTICAL PROD DEV INC COM
  Common Stock     6,254  
   
PHARMERICA CORP-W/I COM
  Common Stock     3,550  
   
PHH CORP COM NEW
  Common Stock     14,544  
   
PHILADELPHIA CONS HLDG CORP COM
  Common Stock     5,280  
   
PHILLIPS VAN HEUSEN CORP COM
  Common Stock     2,998  
   
PHOENIX COMPANIES INC COM
  Common Stock     7,705  
   
PIEDMONT NATURAL GAS INC COM
  Common Stock     5,754  
   
PILGRIMS PRIDE CORP CL B
  Common Stock     5,263  
   
PINNACLE WEST CAP CORP COM
  Common Stock     25,840  
   
PIONEER NATURAL RESOURCES CO COM
  Common Stock     16,325  
   
PIPER JAFFRAY COS-W/I
  Common Stock     3,262  
   
PITNEY BOWES INC COM
  Common Stock     29,691  
   
PLAINS EXPLORATION & PRODUCT
  Common Stock     25,787  
   
PLUM CREEK TIMBER CO INC COM
  Common Stock     15,114  
   
PMI GRP INC COM
  Common Stock     1,817  
   
PNC FINANCIAL SERVICES GROUP INC
  Common Stock     73,999  
   
PNM RESOURCES INC
  Common Stock     7,005  
   
POLARIS INDS INC COM
  Common Stock     5,466  
   
POLO RALPH LAUREN CORP CL A
  Common Stock     5,003  
   
POLYCOM INC COM
  Common Stock     3,470  
   
PORTLAND GEN ELEC CO COM
  Common Stock     10,198  
   
POST PPTYS INC COM
  Common Stock     5,099  
   
POTLATCH CORP COM
  Common Stock     4,328  
   
PPG INDUSTRIES INC COM
  Common Stock     49,371  
   
PPL CORP COM
  Common Stock     36,659  
   
PRAXAIR INC COM
  Common Stock     36,484  
   
PRECISION CASTPARTS CORP COM
  Common Stock     9,836  
   
PRIDE INTERNATIONAL INC
  Common Stock     6,987  
   
PRINCIPAL FINANCIAL GROUP
  Common Stock     52,877  
   
PROCTER & GAMBLE CO COM
  Common Stock     155,405  
   
PROGRESS ENERGY INC COM
  Common Stock     56,048  
   
PROGRESSIVE CORP OHIO COM
  Common Stock     41,157  
   
PROLOGIS TR SH BEN INT
  Common Stock     10,227  
   
PROTECTIVE LIFE CORP COM
  Common Stock     12,154  
   
PROVIDENT BANKSHARES CORP COM
  Common Stock     2,896  
   
PRUDENTIAL FINANCIAL INC
  Common Stock     125,825  
   
PUBLIC SERVICE ENTERPRISE GROUP
  Common Stock     87,630  
   
PUBLIC STORAGE INC COM
  Common Stock     7,609  
   
PUGET ENERGY INC NEW COM
  Common Stock     20,683  
   
PULTE HOME INC COM
  Common Stock     7,977  
   
QUALCOMM INC COM
  Common Stock     25,958  
   
QUANTA SVCS INC COM
  Common Stock     5,489  
   
QUEST DIAGNOSTICS INC COM
  Common Stock     12,754  
   
QUESTAR CORP COM
  Common Stock     11,437  
   
QWEST COMMUNICATIONS INTL INC
  Common Stock     47,388  
   
RADIAN GRP INC COM
  Common Stock     2,153  
   
RADIOSHACK CORP COM
  Common Stock     8,093  
   
RAYMOND JAMES FINANCIAL INC COM
  Common Stock     9,513  

30


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
RAYONIER INC RAYONIER INC (REIT)
  Common Stock     9,302  
   
RAYTHEON CO COM
  Common Stock     101,430  
   
REDWOOD TR INC COM
  Common Stock     4,940  
   
REGAL ENTERTAINMENT GROUP-A
  Common Stock     23,101  
   
REGENCY CENTERS CORP REIT
  Common Stock     8,662  
   
REGIONS FINANCIAL CORP COM
  Common Stock     61,971  
   
REINSURANCE GRP AMER INC COM
  Common Stock     12,340  
   
RELIANT ENERGY INC COM
  Common Stock     12,849  
   
RENT-A-CENTER INC COM
  Common Stock     6,328  
   
REPUBLIC AIRWAYS HOLDINGS IN
  Common Stock     3,893  
   
REPUBLIC SVCS INC COM
  Common Stock     12,497  
   
RESPIRONICS INC COM
  Common Stock     8,371  
   
REYNOLDS AMERICAN INC
  Common Stock     40,456  
   
RITE AID CORP COM
  Common Stock     5,182  
   
ROBERT HALF INTL INC COM
  Common Stock     7,290  
   
ROCKWELL AUTOMATION INC COM
  Common Stock     28,323  
   
ROCKWELL COLLINS-WI
  Common Stock     17,426  
   
ROCKWOOD HOLDINGS INC
  Common Stock     7,028  
   
ROHM & HAAS CO COM
  Common Stock     45,239  
   
ROSS STORES INC COM
  Common Stock     8,742  
   
ROWAN COS INC COM
  Common Stock     6,868  
   
RPM INTL INC COM
  Common Stock     7,663  
   
RUDDICK CORP COM
  Common Stock     5,052  
   
RYDER SYS INC COM
  Common Stock     11,973  
   
RYLAND GRP INC COM
  Common Stock     4,938  
   
SAFECO CORP COM
  Common Stock     27,169  
   
SAFEWAY INC COM NEW
  Common Stock     44,561  
   
SAIC INC COM
  Common Stock     28,295  
   
SAKS INC COM
  Common Stock     17,768  
   
SALLY BEAUTY CO INC-W/I COM
  Common Stock     5,506  
   
SANDISK CORP COM
  Common Stock     4,763  
   
SANMINA-SCI CORP COM
  Common Stock     10,834  
   
SARA LEE CORP COM
  Common Stock     78,131  
   
SCANA CORP W-I COM
  Common Stock     19,423  
   
SCHEIN HENRY INC COM
  Common Stock     14,396  
   
SCHERING-PLOUGH CORP COM
  Common Stock     57,975  
   
SCHULMAN A INC COM
  Common Stock     3,838  
   
SCHWAB CHARLES CORP NEW COM
  Common Stock     40,041  
   
SCRIPPS CO (E.W.) CL A
  Common Stock     15,727  
   
SEALED AIR CORP NEW COM
  Common Stock     7,258  
   
SEARS HOLDINGS CORP
  Common Stock     13,681  
   
SELECTIVE INS GRP INC COM
  Common Stock     5,487  
   
SEMPRA ENERGY COM
  Common Stock     52,485  
   
SERVICE CORP INTL COM
  Common Stock     10,376  
   
SHAW GRP INC COM
  Common Stock     19,697  
   
SHERWIN-WILLIAMS CO COM
  Common Stock     22,426  
   
SIERRA HLTH SVCS INC COM
  Common Stock     4,943  
   
SIERRA PACIFIC RESOURCES COM
  Common Stock     12,119  
   
SIGMA ALDRICH CORP COM
  Common Stock     7,110  
   
SIMON PPTY GRP INC NEW COM
  Common Stock     9,580  
   
SKYWEST INC COM
  Common Stock     6,345  

31


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
SLM CORP
  Common Stock     5,600  
   
SMITH INTL CORP COM
  Common Stock     9,945  
   
SMITHFIELD FOODS INC COM
  Common Stock     13,265  
   
SMUCKER JM CO COM
  Common Stock     4,667  
   
SMURFIT-STONE CONTAINER CORP COM
  Common Stock     22,876  
   
SNAP ON INC COM
  Common Stock     4,284  
   
SONIC AUTOMOTIVE INC CL A
  Common Stock     3,606  
   
SONOCO PRODS CO COM
  Common Stock     7,819  
   
SOUTH FINL GRP INC COM
  Common Stock     5,294  
   
SOUTHERN CO COM
  Common Stock     143,837  
   
SOUTHERN COPPER CORP
  Common Stock     45,900  
   
SOUTHERN UN CO NEW COM
  Common Stock     4,195  
   
SOUTHWEST AIRLINES CO COM
  Common Stock     27,493  
   
SOVEREIGN BANCORP INC COM
  Common Stock     14,193  
   
SPARTAN STORES INC COM
  Common Stock     3,726  
   
SPHERION CORP COM
  Common Stock     4,382  
   
SPIRIT AEROSYSTEMS HOLD-CL A COM
  Common Stock     5,953  
   
SPRINT NEXTEL COM
  Common Stock     22,912  
   
SPX CORP COM
  Common Stock     24,794  
   
ST JUDE MED INC COM
  Common Stock     18,564  
   
STANCORP FINANCIAL GROUP COM
  Common Stock     10,375  
   
STANDARD PAC CORP NEW COM
  Common Stock     724  
   
STANLEY WKS COM
  Common Stock     9,484  
   
STAPLES INC COM
  Common Stock     33,915  
   
STARBUCKS CORP COM
  Common Stock     8,475  
   
STARWOOD HOTELS & RESORTS COM
  Common Stock     13,915  
   
STATE AUTO FINL CORP COM
  Common Stock     3,888  
   
STATE STREET CORP COM
  Common Stock     63,100  
   
STEELCASE INC CL A
  Common Stock     4,747  
   
STEWART INFORMATION SVCS CORP
  Common Stock     4,032  
   
STRYKER CORP COM
  Common Stock     17,569  
   
STUDENT LN CORP COM
  Common Stock     3,573  
   
SUN MICROSYSTEMS INC COM
  Common Stock     21,324  
   
SUN-TIMES MEDIA GROUP INC-A
  Common Stock     1,578  
   
SUNOCO INC COM
  Common Stock     47,146  
   
SUNRISE ASSISTED LIVING INC COM
  Common Stock     3,420  
   
SUNTRUST BANKS INC COM
  Common Stock     80,451  
   
SUPERVALU INC COM
  Common Stock     33,230  
   
SUSQUEHANNA BANCSHARES INC PA
  Common Stock     4,768  
   
SYBASE INC COM
  Common Stock     5,875  
   
SYMANTEC CORP COM
  Common Stock     13,041  
   
SYNNEX CORP
  Common Stock     10,895  
   
SYNOPSYS INC COM
  Common Stock     5,668  
   
SYNOVUS FINANCIAL CORP COM
  Common Stock     23,257  
   
SYSCO CORP COM
  Common Stock     77,296  
   
T ROWE PRICE GROUP INC COM
  Common Stock     13,179  
   
TAKE-TWO INTERACTIVE SOFTWARE
  Common Stock     4,520  
   
TALBOTS INC COM
  Common Stock     3,499  
   
TARGET CORP COM
  Common Stock     86,765  
   
TCF FINL CORP COM
  Common Stock     7,751  
   
TD AMERITRADE HOLDING CORP COM
  Common Stock     44,444  

32


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
TECH DATA CORP COM
  Common Stock     42,198  
   
TECO ENERGY INC COM
  Common Stock     8,020  
   
TELEFLEX INC COM
  Common Stock     8,393  
   
TELEPHONE & DATA SYS INC COM
  Common Stock     13,997  
   
TELLABS INC COM
  Common Stock     2,915  
   
TEMPLE INLAND INC COM
  Common Stock     10,430  
   
TENET HEALTHCARE CORP COM
  Common Stock     15,733  
   
TENNECO INC COM
  Common Stock     8,643  
   
TERADATA CORP COM
  Common Stock     10,120  
   
TERADYNE INC COM
  Common Stock     4,112  
   
TEREX CORP COM
  Common Stock     14,869  
   
TERRA INDS INC COM
  Common Stock     14,936  
   
TESORO CORP COM
  Common Stock     22,431  
   
TEXAS INSTRUMENTS INC COM
  Common Stock     51,709  
   
TEXTRON INC COM
  Common Stock     34,091  
   
THE MCCLATCHY COMPANY (HOLDING
  Common Stock     5,338  
   
THE SCOTTS MIRACLE GRO COMPANY
  Common Stock     4,067  
   
THERMO FISHER SCIENTIFIC CORP
  Common Stock     10,649  
   
THOMAS & BETTS CORP COM
  Common Stock     6,663  
   
THOR INDS INC COM
  Common Stock     5,956  
   
THORNBURG MORTGAGE INC COM
  Common Stock     2,078  
   
TIDEWATER INC COM
  Common Stock     3,709  
   
TIFFANY & CO COM
  Common Stock     6,826  
   
TIMBERLAND CO CL A
  Common Stock     4,607  
   
TIME WARNER INC COM
  Common Stock     109,024  
   
TIMKEN CO COM
  Common Stock     12,574  
   
TITANIUM METALS CORP COM
  Common Stock     3,243  
   
TJX COS INC NEW COM
  Common Stock     37,673  
   
TOLL BROTHERS INC COM
  Common Stock     8,846  
   
TORCHMARK CORP COM
  Common Stock     17,245  
   
TORO CO COM
  Common Stock     5,517  
   
TOTAL SYS SVCS INC COM
  Common Stock     7,452  
   
TRACTOR SUPPLY CO COM
  Common Stock     2,864  
   
TRANE INC COM
  Common Stock     20,535  
   
TRANSATLANTIC HLDGS INC COM
  Common Stock     15,238  
   
TRAVELERS COS INC COM
  Common Stock     130,315  
   
TRUMP ENTMT RES COM
  Common Stock     1,264  
   
TRUSTCO BK CORP N Y COM
  Common Stock     4,494  
   
TRUSTMARK CORP COM
  Common Stock     6,418  
   
TRW AUTOMOTIVE HOLDINGS CORP COM
  Common Stock     18,624  
   
TUPPERWARE CORP COM
  Common Stock     7,835  
   
TYSON FOODS INC COM CL A
  Common Stock     12,151  
   
U S CELLULAR CORP COM
  Common Stock     13,161  
   
UAL CORP UAL CORP COM
  Common Stock     23,729  
   
UAP HLDG CORP COM
  Common Stock     6,987  
   
UGI CORP NEW COM
  Common Stock     8,538  
   
UIL HOLDINGS COM
  Common Stock     7,197  
   
UMB FINL CORP COM
  Common Stock     4,097  
   
UMPQUA HLDGS CORP COM
  Common Stock     2,507  
   
UNION PACIFIC CORP COM
  Common Stock     107,676  
   
UNIONBANCAL CORP DELWARE COM
  Common Stock     27,103  

33


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
UNISYS CORP COM
  Common Stock     3,660  
   
UNITED BANKSHARES INC W VA COM
  Common Stock     4,671  
   
UNITED NAT FOODS INC COM
  Common Stock     4,996  
   
UNITED PARCEL SERVICE CL B COM
  Common Stock     227,060  
   
UNITED RENTALS INC COM
  Common Stock     4,931  
   
UNITED STATES STEEL CORP
  Common Stock     43,596  
   
UNITED STATIONERS COM
  Common Stock     8,853  
   
UNITED TECHNOLOGIES CORP COM
  Common Stock     201,246  
   
UNITEDHEALTH GROUP INC COM
  Common Stock     74,657  
   
UNITRIN INC COM
  Common Stock     18,125  
   
UNIVERSAL CORP VA COM
  Common Stock     4,905  
   
UNIVERSAL HLTH SVCS INC CL B COM
  Common Stock     6,783  
   
UNUMPROVIDNET GROUP COM
  Common Stock     38,471  
   
URS CORP NEW COM
  Common Stock     18,084  
   
US AIRWAYS GROUP INC
  Common Stock     7,899  
   
US BANCORP DEL COM NEW
  Common Stock     142,700  
   
USEC INC COM
  Common Stock     1,860  
   
USG CORP COM NEW
  Common Stock     14,532  
   
UST INC COM
  Common Stock     30,304  
   
V F CORP COM
  Common Stock     14,114  
   
VALASSIS COMMUNICATIONS INC COM
  Common Stock     2,620  
   
VALERO ENERGY CORP COM
  Common Stock     63,072  
   
VALHI INC COM
  Common Stock     5,953  
   
VALLEY NATIONAL BANCORP COM
  Common Stock     8,039  
   
VALSPAR CORP COM
  Common Stock     3,829  
   
VARIAN MED SYS INC COM
  Common Stock     9,244  
   
VECTOR GROUP LTD COM
  Common Stock     5,050  
   
VECTREN CORP COM
  Common Stock     7,178  
   
VERIZON COMMUNICATIONS COM
  Common Stock     543,338  
   
VIACOM INC CL B COM
  Common Stock     40,088  
   
VIAD CORP COM
  Common Stock     3,493  
   
VIRGIN MEDIA INC COM
  Common Stock     5,113  
   
VISHAY INTERTECHNOLOGY INC COM
  Common Stock     7,430  
   
VISTEON CORP COM
  Common Stock     5,542  
   
VOLT INFO SCIENCES INC COM
  Common Stock     3,201  
   
VORNADO REALTY TRUST COM
  Common Stock     8,285  
   
VULCAN MATERIALS CO COM
  Common Stock     9,369  
   
W W GRAINGER INC COM
  Common Stock     22,046  
   
W&T OFFSHORE INC
  Common Stock     4,397  
   
WABCO HOLDINGS INC COM
  Common Stock     7,264  
   
WACHOVIA CORP COM
  Common Stock     236,329  
   
WADDELL & REED FINL INC CL A COM
  Common Stock     8,003  
   
WAL-MART STORES INC COM
  Common Stock     452,962  
   
WALGREEN CO COM
  Common Stock     62,564  
   
WARNER MUSIC GROUP CORP
  Common Stock     2,910  
   
WASHINGTON FED INC COM
  Common Stock     8,004  
   
WASHINGTON MUTUAL INC COM
  Common Stock     36,021  
   
WASHINGTON POST CO CL B COM
  Common Stock     13,626  
   
WASTE MGMT INC DEL COM
  Common Stock     44,880  
   
WATERS CORP COM
  Common Stock     8,340  
   
WATSON PHARMACEUTICALS INC COM
  Common Stock     8,458  

34


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
   
WCI COMMUNITIES COM
  Common Stock     804  
   
WEBSTER FINL CORP WATERBURY CONN
  Common Stock     7,337  
   
WEIS MKTS INC COM
  Common Stock     6,663  
   
WELLCARE HEALTH PLANS WELLCARE
  Common Stock     3,247  
   
WELLPOINT INC COM
  Common Stock     87,043  
   
WELLS FARGO & CO COM
  Common Stock     304,691  
   
WENDYS INTL INC COM
  Common Stock     5,176  
   
WERNER ENTERPRISES INC COM
  Common Stock     4,467  
   
WESCO FINL CORP COM
  Common Stock     6,400  
   
WESCO INTL INC COM
  Common Stock     2,820  
   
WESTAMERICA BANCORPORATION COM
  Common Stock     4,397  
   
WESTAR ENERGY INC COM
  Common Stock     13,170  
   
WESTERN DIGITAL CORP COM
  Common Stock     18,449  
   
WESTERN REFINING INC COM
  Common Stock     3,465  
   
WESTERN UNION CO COM
  Common Stock     18,250  
   
WESTLAKE CHEMICAL CORP COM
  Common Stock     3,054  
   
WEYERHAEUSER CO COM
  Common Stock     89,547  
   
WGL HLDG INC COM
  Common Stock     7,643  
   
WHIRLPOOL CORP COM
  Common Stock     22,136  
   
WHITNEY HLDG CORP COM
  Common Stock     6,460  
   
WHOLE FOODS MKT INC COM
  Common Stock     8,320  
   
WILEY JOHN & SONS INC CL A
  Common Stock     4,889  
   
WILLIAMS COS INC COM
  Common Stock     65,176  
   
WILLIAMS SONOMA INC COM
  Common Stock     7,953  
   
WILMINGTON TR CORP COM
  Common Stock     8,470  
   
WISCONSIN ENERGY CORP COM
  Common Stock     17,020  
   
WORLD FUEL SVCS CORP
  Common Stock     4,018  
   
WORTHINGTON INDS INC COM
  Common Stock     5,965  
   
WRIGHT EXPRESS CORP
  Common Stock     5,882  
   
WRIGLEY (WILLIAM) JR. CO COM
  Common Stock     18,463  
   
WYETH COM
  Common Stock     137,943  
   
WYNDHAM WORLDWIDE CORP-W/I COM
  Common Stock     16,057  
   
XCEL ENERGY INC COM
  Common Stock     57,164  
   
XEROX CORP COM
  Common Stock     60,180  
   
XILINX INC COM
  Common Stock     6,313  
   
XTO ENERGY INC COM
  Common Stock     15,084  
   
YAHOO! INC COM
  Common Stock     15,969  
   
YRC WORLDWIDE INC
  Common Stock     9,502  
   
YUM! BRANDS INC
  Common Stock     38,925  
   
ZALE CORP NEW COM
  Common Stock     3,383  
   
ZENITH NATL INS CORP COM
  Common Stock     5,072  
   
ZEP INC COM
  Common Stock     803  
   
ZIMMER HOLDINGS INC COM
  Common Stock     10,566  
   
ZIONS BANCORP COM
  Common Stock     14,442  
   
EVERGREEN INST MONEY MARKET FUND
  Common Stock     228,879  
   
SUBURBAN PROPANE PARTNERS L P
  Common Stock     5,703  
   
SUNOCO LOGISTICS PARTNERS L P
  Common Stock     8,584  
   
Cash
  Cash     121,827  
   
 
         
   
RAFI Enhanced Large Company Fund Total
        33,227,145  
   
 
         

35


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2007   Schedule H, line 4i
 
                 
        (c)      
    (b)   Description of Investment      
    Identity of Issue,   Including Maturity Date,   (d)  
    Borrower, Lessor or   Rate of Interest, Collateral,   Current  
(a)   Similar Party   Par, or Maturity Value   Value  
 
   
 
           
*  
Participant Promissory Notes
  5.0%-10.5% with maturity dates through 2011     6,377,189  
   
 
         
   
Participant Loans Total
        6,377,189  
   
 
         
   
 
           
   
Total Investments
      $ 375,637,680  
   
 
         
 
*   Denotes party-in-interest, for which a statutory exemption exists.

36


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
   
 
EXHIBITS
     The following exhibit is filed or incorporated as part of this report:
     
Exhibit    
Number   Description
 
   
23.1
  Consent of Freed Maxick & Battaglia, CPAs, P.C. (filed herewith)
 
   
23.2
  Consent of PricewaterhouseCoopers LLP. (filed herewith)
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employees benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
         
  WESCO Distribution, Inc.
Retirement Savings Plan
 
 
Date: June 26, 2008  /s/ Stephen A. Van Oss    
  Stephen A. Van Oss   
  Chairman, 401K Retirement Savings Plan
Investment and Administrative Committees 
 

37