0000863334-11-000013.txt : 20110321 0000863334-11-000013.hdr.sgml : 20110321 20110321161201 ACCESSION NUMBER: 0000863334-11-000013 CONFORMED SUBMISSION TYPE: 497J PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20110321 DATE AS OF CHANGE: 20110321 EFFECTIVENESS DATE: 20110321 FILER: COMPANY DATA: COMPANY CONFORMED NAME: PIONEER MID CAP VALUE FUND CENTRAL INDEX KEY: 0000863334 IRS NUMBER: 043091159 STATE OF INCORPORATION: DE FISCAL YEAR END: 1031 FILING VALUES: FORM TYPE: 497J SEC ACT: 1933 Act SEC FILE NUMBER: 033-34801 FILM NUMBER: 11701414 BUSINESS ADDRESS: STREET 1: 60 STATE ST - 13TH FL CITY: BOSTON STATE: MA ZIP: 02109-1820 BUSINESS PHONE: 6177427825 MAIL ADDRESS: STREET 1: 60 STATE ST STREET 2: 13TH FLOOR CITY: BOSTON STATE: MA ZIP: 02109-1820 FORMER COMPANY: FORMER CONFORMED NAME: PIONEER CAPITAL GROWTH FUND /MA/ DATE OF NAME CHANGE: 19980630 FORMER COMPANY: FORMER CONFORMED NAME: PIONEER GROWTH TRUST DATE OF NAME CHANGE: 19920703

0000863334 S000004143 Pioneer Mid Cap Value Fund

C000011629 Pioneer Mid Cap Value Fund: Class A PCGRX

C000011630 Pioneer Mid Cap Value Fund: Class B PBCGX

C000011631 Pioneer Mid Cap Value Fund: Class C PCCGX

C000011632 Pioneer Mid Cap Value Fund: Class Y PYCGX

C000011633 Pioneer Mid Cap Value Fund: Class R PCMRX

497J 1 mcv-032111497j.txt 497(J) CERTIFICATION LETTER [Logo] PIONEER Investments(R) March 21, 2011 VIA ELECTRONIC TRANSMISSION --------------------------- Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, DC 20549 Re: Pioneer Mid Cap Value Fund (the "Fund") File Nos. 033-34801 and 811-06106 CIK No. 0000863334 Ladies and Gentlemen: Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, I certify that the forms of prospectus and statement of additional information for the Fund, which would have been filed under paragraph (c) of Rule 497, do not differ from those contained in Post-Effective Amendment No. 34 to the Fund's registration statement on Form N-1A, filed electronically on March 18, 2011 (Accession No. 0000863334-11-000011). If you have any questions concerning the foregoing certification, please contact me at (617) 422-4703. Very truly yours, /s/ Kathleen H. Alexander ------------------------- Kathleen H. Alexander Legal Product Manager cc: Christopher J. Kelley, Esq. Toby R. Serkin, Esq. Pioneer Investment Management, Inc. 60 State Street Boston, MA 02109-1820 "Member of the UniCredit S.p.A. banking group"