UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

 

SCHEDULE 13G

 

Under the Securities Exchange Act of 1934



Nuveen Senior Income Fund

(Name of Issuer)

 

Common Stock

(Title of Class of Securities)

 

67067Y104

(CUSIP Number)

 

 

December 31, 2012
(Date of Event Which Requires Filing of this Statement)

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

 

x Rule 13d-1(b)

o Rule 13d-1(c)

o Rule 13d-1(d)

 

 

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

 

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

 

 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 2 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Guggenheim Capital, LLC
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 3 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Guggenheim Partners, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 4 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
GP Holdco, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 5 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
GPFT Holdco, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 6 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Guggenheim Funds Services Holdings, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 7 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Guggenheim Funds Services, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
HC

 

 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 8 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Guggenheim Funds Distributors, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Delaware
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
IA, BD

 

 
 


 

CUSIP No.  67067Y104
 SCHEDULE 13G
Page 9 of 15 Pages

 

         
1
NAME OF REPORTING PERSONS
 
Claymore Securities Defined Portfolios, Series 487
Guggenheim Defined Portfolios, Series 761, 788, 826, 834, 840, 846, 851, 860, 874, 876, 894, 895, 910, 912, 942 & 944
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) o (b) o
 
3
SEC USE ONLY
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Illinois
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
5
SOLE VOTING POWER
 
0
6
SHARED VOTING POWER
 
1,901,432
7
SOLE DISPOSITIVE POWER
 
0
8
SHARED DISPOSITIVE POWER
 
1,901,432
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,901,432
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions)
 
 
o
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
5.85%
12
TYPE OF REPORTING PERSON (See Instructions)
 
IV

 

 
 


 

CUSIP No. 67067Y104
 SCHEDULE 13G
Page 10 of  15 Pages

 

Item 1.(a) Name of Issuer:

Nuveen Senior Income Fund

(b) Address of Issuer’s Principal Executive Offices:

333 West Wacker Drive, Chicago, Illinois 60606

Item 2.(a) Name of Person Filing:

This Statement is filed by Guggenheim Capital, LLC, Guggenheim Partners, LLC, GP Holdco, LLC, GPFT Holdco, LLC, Guggenheim Funds Services Holdings, LLC, Guggenheim Funds Services, LLC and Guggenheim Funds Distributors, LLC ("GFD"). GFD is filing as Sponsor for Claymore Securities Defined Portfolios, Series 487, Guggenheim Defined Portfolios, Series 761, 788, 826, 834, 840, 846, 851, 860, 874, 876, 894, 895, 910, 912, 942 & 944, (together "The Filing Entities"). This Statement relates to the shares of Common Stock (the "Shares"), of the Issuer beneficially owned directly by The Filing Entities. Guggenheim Capital, LLC is the majority owner of Guggenheim Partners, LLC, GP Holdco, LLC, GPFT Holdco, LLC, Guggenheim Funds Services Holdings, LLC, Guggenheim Funds Services, LLC and GFD. GFD is the Sponsor of The Filing Entities which beneficially own more than 5% of the Shares reported herein. GFD is a registered investment adviser under Section 203 of the Investment Advisers Act of 1940 and a broker dealer registered under Section 15 of the Securities and Exchange Act of 1934.

(b) Address of Principal Business Office, or, if none, Residence:

Guggenheim Capital, LLC: 227 West Monroe Street, Chicago, IL 60606

Guggenheim Partners, LLC: 227 West Monroe Street, Chicago, IL 60606

GP Holdco, LLC: 227 West Monroe Street, Chicago, IL 60606

GPFT Holdco, LLC: 227 West Monroe Street, Chicago, IL 60606

Guggenheim Funds Services Holdings, LLC: 2455 Corporate West Dr., Lisle, IL 60532

Guggenheim Funds Services, LLC: 2455 Corporate West Dr., Lisle, IL 60532

Guggenheim Funds Distributors, LLC: 2455 Corporate West Dr., Lisle, IL 60532

(c) Citizenship:

Guggenheim Capital, LLC is a Delaware limited liability company.

Guggenheim Partners, LLC is a Delaware limited liability company.

GP Holdco, LLC is a Delaware limited liability company.

GPFT Holdco, LLC is a Delaware limited liability company.

Guggenheim Funds Services Holdings, LLC is a Delaware limited liability company.

Guggenheim Funds Services, LLC is a Delaware limited liability company.

Guggenheim Funds Distributors, LLC is a Delaware limited liability company.

 (d) Title of Class of Securities:

Common Stock

 (e) CUSIP Number:

67067Y104

 

 



 

 

CUSIP No. 67067Y104
 SCHEDULE 13G
Page 11 of 15 Pages

 

 

Item 3. If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

  (a) x Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
 
  (b) ¨ Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
 
  (c) ¨ Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
 
  (d) ¨ Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
 
  (e) x An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E).
 
  (f) ¨ An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F).
 
  (g) x A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G).
 
  (h) ¨ A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).
 
  (i) ¨ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).
 
  (j) ¨ A non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J).
 
  (k) ¨ A group, in accordance with §240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J), please specify the type of institution:                            
       

 



 

 

CUSIP No. 67067Y104
 SCHEDULE 13G
Page 12 of 15 Pages

 

 

Item 4. Ownership

 

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

 

(a) Amount beneficially owned:

As of December 31, 2012, Guggenheim Capital, LLC may be deemed the beneficial owner of 1,901,432 Shares, which amount includes 1,901,432 Shares beneficially owned directly by The Filing Entities, and indirectly by Guggenheim Funds Distributors, LLC, Guggenheim Funds Services, LLC, Guggenheim Funds Services Holdings, LLC, GPFT Holdco, LLC, GP Holdco, LLC and Guggenheim Partners, LLC.

 

(b) Percent of class:

5.85% of the Common Stock

 

(c) Number of shares as to which the person has:

Guggenheim Capital, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

Guggenheim Partners, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

GP Holdco, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

GPFT Holdco, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

Guggenheim Funds Services Holdings, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

Guggenheim Funds Services, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

Guggenheim Funds Distributors, LLC

(i) Sole power to vote or to direct the vote: 0

(ii) Shared power to vote or to direct the vote: See Item 4(a) above. 1,901,432

(iii) Sole power to dispose or to direct the disposition of: 0

(iv) Shared power to dispose or to direct the disposition of: See Item 4(a) above. 1,901,432

 

 


 

 

CUSIP No. 67067Y104
 SCHEDULE 13G
Page 13 of  15 Pages

 

Item 5. Ownership of Five Percent or Less of a Class

 

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following o.

Item 6. Ownership of More Than Five Percent on Behalf of Another Person

 

Certain advisory clients of Guggenheim Funds Distributors, LLC have the right to receive or the power to direct the receipt of dividends from or the profits from the sale of the Shares reported herein. 

Item 7. Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company or Control Person

 

See disclosure in Item 2 hereof.

Item 8. Identification and Classification of Members of the Group

 

Not Applicable

Item 9. Notice of Dissolution of Group

 

Not Applicable

Item 10. Certification

 

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

 

 



 
 
CUSIP No. 67067Y104
 SCHEDULE 13G
Page 14 of 15 Pages

 

 

JOINT FILING AGREEMENT

 

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 

Dated: February 14, 2013 

  

  Guggenheim Capital, LLC
  By: Robert Saperstein
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Partners, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  GP Holdco, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  GPFT Holdco, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Services Holdings, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Services, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Distributors, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

 



 
 
CUSIP No. 67067Y104
 SCHEDULE 13G
Page 15 of 15 Pages

 

 

JOINT FILING AGREEMENT

 

The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of Nuveen Senior Income Fund, dated as of February 14, 2013 is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

 

Dated: February 14, 2013 

  

  Guggenheim Capital, LLC
  By: Robert Saperstein
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Partners, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  GP Holdco, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  GPFT Holdco, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Services Holdings, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Services, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel

 

  Guggenheim Funds Distributors, LLC
  By: Guggenheim Capital, LLC, parent company
       
  By:  /s/ Robert Saperstein
    Name:  Robert Saperstein
    Title:  Managing Director, Senior Regulatory Counsel