Bingham McCutchen LLP
One Federal Street
Boston, Massachusetts 02110
April 27, 2012
VIA EDGAR
Securities and Exchange Commission
Division of Investment Management
100 F Street, NE
Washington, D.C. 20549
Pioneer Series Trust VI (the "Trust")
Registration Statement on Form N-1A
(File Nos. 333-138560 and 811-21978)
Ladies and Gentlemen:
Pursuant to Rule 477 under the Securities Act of 1933, as
amended, please accept this letter as a request for Commission's
consent to the withdrawal of a Post-Effective Amendment No. 16 to
the Registration Statement on Form N-1A of Pioneer Series Trust VI
(the "Registrant"), which was filed on April 27, 2012 (Accession
No. 0000893660-12-000011) (the "Amendment"), solely with repect to
Pioneer Floating Rate Fund, a series of the Registrant.
As noted on the facing page of the Admendment, the Amendment solely
relates to Pioneer Multi-Asset Real Return Fund, a different series
of the Registrant. However, the Registrant inadvertently included
the series identifiers of both funds when it filed the Amendment
via EDGAR. No securities of Pioneer Floating Rate Fund have
been sold in connection with the Amendment. The currently effective
registration statement of Pioneer Floating Rate Fund was filed on
February 28, 2012 (Accession No. 0001094521-12-000005).
The Registrant hereby requests that an order be issued granting its
request for withdrawal of the Amendment solely with respect to
Pioneer Floating Rate Fund as soon as is practicable.
The Registrant is not requesting the withdrawal of the Amendment
with respect to Pioneer Multi-Asset Real Return Fund.
Please call the undersigned at (617) 951-8458 or Toby R. Serkin at (617)
951-8760 with any questions.
Sincerely,
/s/ Jeremy B. Kantrowitz
Jeremy B. Kantrowitz