485BPOS 1 d485bpos.txt PIONEER EQUITY OPPORTUNITY FUND File Nos. 333-118562 811-21623 As filed with the Securities and Exchange Commission on April 11, 2011 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. 8 [X] and/or REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 [X] Amendment No. 11 [X]
(Check appropriate box or boxes) PIONEER EQUITY OPPORTUNITY 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) ___ [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 and has duly caused this 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 11th day of April, 2011. PIONEER EQUITY OPPORTUNITY 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 indicated below on April 11, 2011: Signature Title John F. Cogan, Jr.* Chairman of the Board John F. Cogan, Jr. and President (Principal Executive Officer) and Trustee Mark E. Bradley* Treasurer (Principal Mark E. Bradley Financial and Accounting Officer) David R. Bock* Trustee David R. Bock Mary K. Bush* Trustee Mary K. Bush Benjamin M. Friedman* Trustee Benjamin M. Friedmam Margaret B. W. Graham* Trustee Margaret B. W. Graham /s/Daniel K. Kingsbury Executive Vice President Daniel K. Kingsbury and Trustee Thomas J. Perna* Trustee Thomas J. Perna Marguerite A. Piret* Trustee Marguerite A. Piret Stephen K. West* Trustee Stephen K. West
By: /s/ Daniel K. Kingsbury Dated: April 11, 2011 ------------------------ Daniel K. Kingsbury Attorney-in-Fact
EXHIBIT INDEX Exhibit No. Description EX-101.INS XBRL Instance Document EX-101.SCH XBRL Taxonomy Extension Schema Document EX-101.CAL XBRL Taxonomy Extension Calculation Linkbase EX-101.DEF XBRL Taxonomy Extension Definition Linkbase EX-101.LAB XBRL Taxonomy Extension Labels Linkbase EX-101.PRE XBRL Taxonomy Extension Presentation Linkbase