1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 11-K



                 [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF
                     THE SECURITIES AND EXCHANGE ACT OF 1934

                 FOR THE YEARS ENDED DECEMBER 31, 2000 AND 1999

                                       OR

              [ ] TRANSACTION REPORT PURSUANT TO SECTION 15 (d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

               FOR THE TRANSITION PERIOD FROM _______ TO _________

                        COMMISSION FILE NUMBER _________

                                     1-11356



                    RADIAN GROUP INC. SAVINGS INCENTIVE PLAN
                               1601 MARKET STREET
                             PHILADELPHIA, PA 19103
                      (FULL TITLE AND ADDRESS OF THE PLAN)

                                RADIAN GROUP INC.
                               1601 MARKET STREET
                             PHILADELPHIA, PA 19103
      (NAME AND ADDRESS OF ISSUER OF SECURITIES HELD PURSUANT TO THE PLAN)
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                                RADIAN GROUP INC.
                             SAVINGS INCENTIVE PLAN

                                      INDEX



                                                                                                           Page
                                                                                                           ----
                                                                                                        
Independent Auditors' Report ...........................................................                     1

Financial Statements

      Statements of Net Assets Available for Benefits ..................................                     2

      Statements of Changes in Net Assets Available for Benefits .......................                     3

      Notes to Financial Statements ....................................................                   4-8

Supplemental Schedule Furnished Pursuant to Requirements of the Employee
Retirement Income Security Act of 1974:

      Schedule H, Item 4i: Schedule of Assets Held for Investment Purposes as of
      December 31, 2000 ................................................................                     9

Independent Auditors' Consent ..........................................................                    10

   3
INDEPENDENT AUDITORS' REPORT


To the Savings Incentive Plan Committee and
      Participants of the Radian Group Inc.
      Savings Incentive Plan

Philadelphia, Pennsylvania:

We have audited the accompanying statements of net assets available for benefits
of the Radian Group Inc. Savings Incentive Plan (the "Plan") as of December 31,
2000 and 1999, and the related statements of changes in net assets available for
benefits for the years 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 audits in accordance with auditing standards generally accepted
in the United States of America. 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 audits provide a
reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material
respects, the net assets available for benefits of the Plan as of December 31,
2000 and 1999, and the changes in net assets available for benefits for the
years then ended in conformity with accounting principles generally accepted in
the United States of America.

Our audits were conducted for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule of assets held
for investment purposes as of December 31, 2000 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. The supplemental schedule is the
responsibility of the Plan's management. Such supplemental schedule has been
subjected to the auditing procedures applied in our audits of the basic
financial statements and, in our opinion, is fairly stated in all material
respects when considered in relation to the basic financial statements taken as
whole.


/s/ Deloitte & Touche LLP

DELOITTE & TOUCHE LLP
Philadelphia, Pennsylvania
June 29, 2001


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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
DECEMBER 31, 2000 AND 1999



                                                     2000               1999
                                                 -----------        -----------
                                                              
ASSETS

   Cash ....................................     $    13,594        $        --

   Investments (at fair value):
         Common Stock of Radian Group Inc...       9,016,346          7,035,393

         Other investments (Note G) ........      13,883,963         13,246,789

   Loans receivable ........................         442,280            331,375

   Employer contribution receivable ........       1,180,895            985,714

   Other net assets ........................              --            304,992
                                                 -----------        -----------

                                                  24,537,078         21,904,263
LIABILITIES

   Other net liabilities ...................          17,946              3,642
                                                 -----------        -----------

NET ASSETS AVAILABLE FOR BENEFITS ..........     $24,519,132        $21,900,621
                                                 ===========        ===========



                       See notes to financial statements.


                                       2
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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
DECEMBER 31, 2000 AND 1999



                                                                   2000                 1999
                                                                -----------          -----------
                                                                               
ADDITIONS TO NET ASSETS ATTRIBUTED TO:
   Investment income:
         Net appreciation in fair value of investments..        $ 1,200,237          $ 1,849,861
         Loan interest .................................             28,423               28,517
         Interest and dividends ........................          1,254,758              433,568
                                                                -----------          -----------
               Total investment income .................          2,483,418            2,311,946
                                                                -----------          -----------

   Contributions:
         Participants' .................................          2,162,218            2,020,239
         Employer's ....................................          1,180,895              985,714
         Rollover ......................................            279,525              123,092
                                                                -----------          -----------
               Total contributions .....................          3,622,638            3,129,045
                                                                -----------          -----------

   Other additions .....................................             54,537                   --
                                                                -----------          -----------

         Total additions ...............................          6,160,593            5,440,991
                                                                -----------          -----------

DEDUCTIONS FROM NET ASSETS ATTRIBUTED TO:
   Benefits paid to participants .......................          3,542,082            1,579,799
   Forfeitures .........................................                 --               62,322
                                                                -----------          -----------

         Total deductions ..............................          3,542,082            1,642,121
                                                                -----------          -----------

NET ADDITIONS ..........................................          2,618,511            3,798,870

NET ASSETS AVAILABLE FOR BENEFITS, BEGINNING
   OF THE YEAR .........................................         21,900,621           18,101,751
                                                                -----------          -----------

NET ASSETS AVAILABLE FOR BENEFITS, END OF YEAR .........        $24,519,132          $21,900,621
                                                                ===========          ===========



                       See notes to financial statements.


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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

NOTES TO FINANCIAL STATEMENTS

A. ACCOUNTING PRINCIPLES

The financial statements of the Radian Group Inc. Savings Incentive Plan (the
"Plan") are presented on the accrual basis of accounting. Investments are
carried at fair value which is based on quoted market prices. Dividends and
interest are recorded when earned. Participant and employer contributions are
recorded in the period to which they are applicable. Brokerage commissions, and
other expenses incurred in connection with the purchase or sale of securities,
and all other costs and expenses of the Plan are charged directly to the Plan.

The preparation of financial statements in conformity with accounting principles
generally accepted in the United States of America requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities at the date of the financial statements and the reported amounts of
income and expense during the reporting period. Actual results may differ from
those estimates and assumptions.

In 1999, the Plan adopted Statement of Position 99-3, Accounting for and
Reporting of Certain Defined Contribution Plan Investments and Other Disclosure
Matters, which simplifies disclosures for certain investments and which requires
the disclosure of those investments (participant-directed and
non-participant-directed) that represent five percent or more of net assets
available for benefits. As a result, total investment by fund representing 5
percent or more of net assets available for benefits is disclosed at Note K.

B. PLAN DESCRIPTION

The following is a brief overview of the Plan. Participants should refer to the
Plan documents for a complete description of the Plan.

The Plan became effective on November 6, 1992, concurrent with the initial
public offering of CMAC Investment Corporation's ("CMT") common stock. Prior to
that date, employees of Commonwealth Mortgage Assurance Company ("CMAC")
participated in a similar plan offered by CMAC's former parent. On April 1,
1993, account balances of CMAC employees from the prior plan were transferred to
a separate trust which became part of the Plan.

On November 22, 1998, the Board of Directors of CMT and the Board of Directors
of Amerin Corporation ("Amerin") each approved an Agreement and Plan of Merger
pursuant to which CMT and Amerin merged. The merger was effective June 9, 1999
after approval by the stockholders of both companies, at which time CMT was
renamed Radian Group Inc. ("Radian"). At the same time, CMT's main operating
subsidiary, CMAC, was renamed Radian Guaranty Inc. ("Radian Guaranty"). From the
date of merger until their termination on September 30, 1999, the remaining
Amerin Guaranty Corporation ("Amerin Guaranty") employees continued to
contribute to the Amerin 401(k) plan. Any Amerin Guaranty employees that
transferred to Radian Guaranty effective with the merger began to contribute to
the Plan on June 9, 1999. Subsequent to September 30, 1999, any balances from
Amerin Guaranty employees that remained in the Amerin 401(k) plan will be
converted to the Plan unless a distribution can be made to the employee. At
December 31, 2000, no balances from the Amerin 401(k) plan were converted to the
Plan and as of June 29, 2001, no balances from the Amerin plan had yet been
converted to the Plan.

The Plan is a defined contribution plan designed to allow eligible employees of
Radian and Radian Guaranty to save for their retirement. Full-time employees,
upon completion of 90 days employment, and part-time employees, employed for at
least 90 consecutive days, are eligible to join the Plan. Effective January 1,
1994, all participant contributions from 1% to 15% are made on a salary
reduction basis.

Additional limitations may be imposed under the Plan on the amount of salary
reduction contributions and after-tax savings contributions that may be elected
by highly compensated participants in order to comply with certain
non-discrimination requirements of the Internal Revenue Code of 1986 (the
"Code"). The annual limit on salary reduction contributions by a participant is
determined from time to time by the Benefits Administration Committee (the
"Committee") (not to exceed the indexed limitations contained in the Code),
which were $10,500 for 2000 and $10,000 for 1999. Participant after-tax
contributions have not been permitted after January 1, 1994.

C. ADMINISTRATION OF THE PLAN

The Plan is administered by the Committee which has fiduciary responsibility for
the general operation of the Plan. Members of the Committee are appointed by the
Board of Directors of Radian for indefinite terms and may resign or be removed
at any time. Members of the Committee serve without compensation for their
service as such, and Radian


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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

NOTES TO FINANCIAL STATEMENTS - CONTINUED

indemnifies such members to the extent determined by its Board of Directors.

Although Radian expects to continue the Plan, the right to amend or terminate
the Plan is reserved. In the event of Plan termination, all benefits become
fully vested and nonforfeitable and the net assets of the Plan would be
allocated as required by the Employee Retirement Income Security Act of 1974
("ERISA"), as amended.

D. MATCHING CONTRIBUTIONS

Radian will make an annual "matching contribution" to a separate "Incentive
Account" with respect to the salary reduction contributions of each participant,
subject to a limit of 5% of the participant's base salary in any pay period. For
every dollar a participant contributes to the Plan (not exceeding a total of 5%
of base salary in any pay period) and does not withdraw before the close of the
Plan year (calendar year), Radian will make a contribution of at least $0.25.

Matching contributions generally must be made no later than the last date on
which amounts so paid may be deducted for Federal income tax purposes. In order
to be entitled to the matching contribution for a Plan year, a participant must
be employed by Radian on the last working day of the Plan year, be on an
authorized leave of absence (provided the participant has not withdrawn his
current year contribution) or be entitled to receive a distribution of his
account following his retirement, death or disability in the relevant Plan year.

Matching contributions, which may be made with Radian Common Stock, will be
invested in the Common Stock Fund (see Note F) or some other investment or a
combination thereof as determined by the Board of Directors of Radian or a
committee thereof. Prior to the making of matching contributions for each year,
the Board of Directors or committee thereof will make a one-time determination
regarding the investment of the Employer matching contributions for such year.
All matching contributions for the years ended December 31, 2000 and 1999 were
invested in the Common Stock Fund.

After the close of any year, Radian may, in its sole discretion, make a
supplemental matching contribution. For every eligible dollar the participants
contributed to the Plan during the years ended December 31, 2000 and 1999,
Radian made supplemental matching contributions in Radian common stock of $0.75.

E. VESTING

The rights of a participant to savings contributions made by the participant and
salary reduction contributions made by Radian on the participant's behalf, and
any earnings thereon, are at all times fully vested and nonforfeitable. Matching
contributions, and any earnings thereon, become vested based on such
participant's years of vesting service. A participant earns one year of vesting
service for each Plan year in which such participant completes at least 1,000
hours of service.


Participants become vested under the following schedule:



                                                                     Vested Percentage
                                                                    of the Participant's
            Years of Service                                         Incentive Account
            ----------------                                        --------------------
                                                                 
            Less than 2                                                      0%
            2 but less than 3                                               20%
            3 but less than 4                                               40%
            4 but less than 5                                               60%
            5 but less than 6                                               80%
            6 or more                                                      100%



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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

NOTES TO FINANCIAL STATEMENTS - CONTINUED

F. INVESTMENT OPTIONS

All assets in the Plan other than those in the Common Stock Fund are invested in
various funds offered by Massachusetts Financial Services ("MFS"). A description
of the investment options available under the Plan is as follows:

        (a) MFS Money Market Fund -- A conservative fund that provides liquidity
    and a short-term variable interest rate.

        (b) MFS Emerging Growth Fund -- This fund seeks long-term growth of
    capital primarily through .common stocks of small and medium-sized companies
    (at least 80% under normal circumstances) early in their lifecycle.

        (c) MFS Bond Fund -- The fund's primary investment objective is to
    provide as high a level of current income as is believed to be consistent
    with prudent investment risk. The fund's secondary objective is to protect
    shareholders' capital.

        (d) MFS Total Return Fund-A -- The fund seeks above average income
    (compared to a portfolio entirely invested in equity securities) consistent
    with the prudent employment of capital. The fund also seeks long-term growth
    of capital and income. The portfolio consists of diverse securities and
    varies the percentage of assets invested in any one type.

        (e) Massachusetts Investors Trust -- This fund invests in stocks that
    offer both current income and the potential for long-term growth of capital
    and future income. The portfolio holds primarily quality stocks representing
    many well-known companies across a wide range of industries.

        (f) Massachusetts Investors Growth Stock Fund -- This fund seeks
    long-term growth of capital and future income, rather than current income,
    by investing in common stocks or convertible securities of large companies
    exhibiting above-average prospects for long-term growth.

        (g) MFS Research Fund -- This fund seeks long-term growth of capital and
    future income by investing in common stock and convertible securities of
    large companies that are fairly representative of the overall stock market
    in both size and price.

        (h) MFS Capital Opportunities Fund -- This fund seeks primarily capital
    appreciation by investing in common stocks of large companies that are
    fairly representative of the overall stock market in both size and price.

        (i) MFS Global Equity Fund -- This fund seeks long-term growth of
    capital by investing in equities issued by both foreign and domestic
    companies. The portfolio is comprised of approximately one third U.S.
    assets, one third European assets and 10% Japanese assets, with the
    remainder divided among developed nations and emerging markets.

        (j) MFS New Discovery Fund -- This fund seeks long-term growth of
    capital primarily through common stocks of companies with small market
    capitalizations in emergent industries or early in their growth stages.

        (k) Common Stock Funds -- The assets of the Common Stock Fund, including
    earnings thereon, are invested in Radian Common Stock purchased by or
    contributed by Radian. Radian Common Stock is purchased at prevailing market
    prices in the open market, or in privately negotiated transactions. In the
    normal course of business, such stock is sold only to meet administrative
    and distribution requirements of the Plan. The value of this fund fluctuates
    based on the market price of Radian Common Stock.

The selection of investment options, which may be done in increments of 1% in
any one of the above mentioned funds, pursuant to the Plan, with the exception
of Employer matching contributions, is the sole responsibility of each
participant. Neither the trustee nor the Employer shall have any responsibility
to select investment options or to advise participants in selecting their
investment options. Subject to applicable provisions of law, each participant
assumes all risks connected with any decrease in the market value of any
securities in the funds, and such funds shall be the sole source of payments to
be made under the Plan.


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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

NOTES TO FINANCIAL STATEMENTS - CONTINUED


G. INVESTMENTS

Other investments consist of the following:



                                                    December 31, 2000                         December 31, 1999
                                            --------------------------------          --------------------------------
                                                                    Fair                                      Fair
                                               Cost                 Value                Cost                 Value
                                            -----------          -----------          -----------          -----------
                                                                                               
    MFS Money Market Fund ........          $ 1,187,142          $ 1,187,142          $   713,370          $   713,370

    MFS Emerging Growth Fund .....            2,495,372            4,130,356            2,013,318            5,590,122

    MFS Bond Fund ................              531,766              896,783            1,012,921              973,684

    MFS Total Return Fund - A ....            2,444,492            2,665,411            2,368,250            2,356,509

    Massachusetts Investors Trust             2,322,113            3,199,298            2,561,802            3,613,104

    Massachusetts Investors Growth
       Stock Fund ................              744,181              602,406                   --                   --

    MFS Research Fund ............              173,537              140,476                   --                   --

    MFS Capital Opportunities Fund              580,348              464,535                   --                   --

    MFS Global Equity Fund .......              219,060              194,016                   --                   --

    MFS New Discovery Fund .......              510,922              403,540                   --                   --
                                            -----------          -----------          -----------          -----------

Total Other Investments ..........          $11,208,933          $13,883,963          $ 8,669,661          $13,246,789
                                            ===========          ===========          ===========          ===========




H. WITHDRAWALS

Participants are permitted to make withdrawals in accordance with Plan
provisions. The minimum withdrawal permitted is the lesser of $500 or the full
value of the participant's applicable account.

All amounts attributable to savings contributions must be withdrawn prior to any
hardship withdrawal of amounts attributable to matching contributions or salary
reduction contributions.

The Plan's hardship withdrawal rules comply with the Code. In order to make a
hardship withdrawal, a participant must exhaust the possibility of all other
withdrawals (other than hardship withdrawals) under the Plan and all such
withdrawals and nontaxable loans available under all other retirement plans
maintained by Radian and its affiliates. Earnings credited after 1988 on salary
reduction contributions are not available for hardship withdrawals, even if the
contributions were made before 1989. Upon receiving a hardship distribution, a
participant is generally suspended from making salary reduction contributions
and savings contributions to the Plan (and all other deferred compensation plans
maintained by Radian and its affiliates) for one year and an additional
limitation is imposed on the amount of salary reduction contributions that can
be made by the participant for the calendar year following the year of the
hardship withdrawal.


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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN

NOTES TO FINANCIAL STATEMENTS - CONTINUED

I. LOANS

Participants may borrow from the Plan in an amount up to 50% of their vested
balance. The maximum loan amount is $50,000 as set forth by the IRS and
Department of Labor regulations. The minimum loan allowed by the Plan is $1,000.
Loans are repaid via payroll deductions including interest at the prime rate
plus 1% over a maximum five-year period, except loans which are used toward the
purchase of a primary residence which can be repaid over a longer time period.

J. FEDERAL TAX CONSIDERATIONS

The IRS determined and informed Radian by a letter dated January 22, 1996, that
the Plan and related trust were designed in accordance with applicable sections
of the Internal Revenue Code. Therefore, no provision for income taxes has been
made in these financial statements. As required under that determination letter,
Radian adopted the amended and restated Plan on April 16, 1996, with an
effective date of January 1, 1994. The Committee and the Plan's tax counsel
believe that the Plan is currently being operated in compliance with the
applicable requirements of the Internal Revenue Code.

K. SCHEDULE OF INVESTMENTS GREATER THAN 5% OF NET ASSETS (AT FAIR VALUE)

The following presents investments that represent 5 percent or more of the
Plan's net assets.



                                                          2000                1999
                                                       ----------          ----------
                                                                     
         MFS Emerging Growth Fund ...........          $4,130,356          $5,590,122

         MFS Total Return Fund - A ..........           2,665,411           2,356,509

         Massachusetts Investors Trust ......           3,199,298           3,613,104

         Common Stock Fund ..................           9,016,346           7,035,393



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RADIAN GROUP INC. SAVINGS INCENTIVE PLAN
SCHEDULE H, ITEM 4i: SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES

DECEMBER 31, 2000



Identity                                                                 Number of                                 Current
of Issuer           Description of Investment                             Shares               Cost                 Value
---------           -------------------------                            ---------          -----------          -----------
                                                                                                     
MFS                 Money Market Fund                                    1,187,142          $ 1,187,142          $ 1,187,142

MFS                 Emerging Growth Fund                                    92,237            2,495,372            4,130,356

MFS                 Bond Fund                                               72,732              531,766              896,783

MFS                 Total Return Fund - A                                  172,966            2,444,492            2,665,411

MFS                 Massachusetts Investors Trust                          159,805            2,322,113            3,199,298

MFS                 Massachusetts Investors Growth Stock Fund               35,146              744,181              602,406

MFS                 Research Fund                                            5,858              173,537              140,476

MFS                 Capital Opportunities Fund                              25,966              580,348              464,535

MFS                 Global Equity Fund                                       9,261              219,060              194,016

MFS                 New Discovery Fund                                      22,270              510,922              403,540

Radian*             Common Stock Fund                                      572,466            5,650,442            9,016,346

                    Loans receivable @ 8.00% to 10.50%                                          442,280              442,280
                                                                                            -----------          -----------

     TOTAL                                                                                  $17,301,655          $23,342,589
                                                                                            ===========          ===========


----------

*Indicates party-in-interest to the Plan.


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INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in Registration Statement No.
33-57872 of Radian Group Inc. on Form S-8 of our report dated June 29, 2001
appearing in this Annual Report on Form 11-K of Radian Group Inc. Savings
Incentive Plan for the year ended December 31, 2000.


/s/  Deloitte & Touche LLP

Philadelphia, Pennsylvania
July 16, 2001


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                                    SIGNATURE


    PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THE
SAVINGS INCENTIVE PLAN COMMITTEE HAS DULY CAUSED THIS ANNUAL REPORT TO BE SIGNED
BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED.

                                               RADIAN GROUP INC.
                                            SAVINGS INCENTIVE PLAN

Date:  June 29, 2001

                                     By: /s/ C. Robert Quint
                                        -----------------------------
                                         C. Robert Quint
                                         Executive Vice President
                                         and Chief Financial Officer