485BPOS 1 d455768d485bpos.txt PIONEER STRATEGIC INCOME FUND File Nos. 333-71813 811-09223 As filed with the Securities and Exchange Commission on January 8, 2013 ================================================================================ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 / X / --- Pre-Effective Amendment No. ___ / / --- Post-Effective Amendment No. 25 / X / --- and/or REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 / X / --- Amendment No. 27 / X / --- (Check appropriate box or boxes) PIONEER STRATEGIC INCOME FUND (Exact Name of Registrant as Specified in Charter) 60 State Street, Boston, Massachusetts 02109 (Address of Principal Executive Offices) (Zip Code) Registrant's Telephone Number, including Area Code: (617) 742-7825 Terrence J. Cullen, Pioneer Investment Management, Inc., 60 State Street, Boston, Massachusetts 02109 (Name and Address of Agent for Service) It is proposed that this filing will become effective (check appropriate box): [X] immediately upon filing pursuant to paragraph (b) [ ] on [date] pursuant to paragraph (b) [ ] 60 days after filing pursuant to paragraph (a)(1) [ ] on [date] pursuant to paragraph (a)(1) [ ] 75 days after filing pursuant to paragraph (a)(2) [ ] on [date] pursuant to paragraph (a)(2)of Rule 485. If appropriate, check the following box: [ ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment. ================================================================================ SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Fund certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act of 1933. The fund has duly caused this Post-Effective Amendment No. 25 to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Boston and The Commonwealth of Massachusetts on the 8th day of January, 2013. PIONEER STRATEGIC INCOME FUND By: /s/ Daniel K. Kingsbury ----------------------------- Daniel K. Kingsbury Executive Vice President Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on January 8, 2013: Signature Title John F. Cogan, Jr.* President (Principal John F. Cogan, Jr. Executive Officer) and Trustee Mark E. Bradley* Treasurer (Principal Financial and Mark E. Bradley Accounting Officer) David R. Bock* Trustee David R. Bock Benjamin M. Friedman* Trustee Benjamin M. Friedman Margaret B. W. Graham* Trustee Margaret B. W. Graham /s/ Daniel K. Kingsbury Executive Vice President Daniel K. Kingsbury and Trustee Thomas J. Perna* Chairman of the Board Thomas J. Perna and Trustee Marguerite A. Piret* Trustee Marguerite A. Piret Stephen K. West* Trustee Stephen K. West *By: /s/ Daniel K. Kingsbury Dated: January 8, 2013 Daniel K. Kingsbury Attorney-in-fact EXHIBIT INDEX Index Number Description of Index EX-101.INS XBRL Instance Document EX-101.SCH XBRL Taxonomy Extension Schema Document EX-101.CAL XBRL Taxonomy Extension Calculation Document EX-101.DEF XBRL Taxonomy Extension Definition Document EX-101.LAB XBRL Taxonomy Extension Labels Linkbase EX-101.PRE XBRL Taxonomy Extension Presentation Linkbase