Dreyfus Stock Index Fund, Inc.
c/o The Dreyfus Corporation
200 Park Avenue
New York, New York 10166
April 29, 2011
U.S. Securities and Exchange Commission
Division of Investment Management
100 F Street, N.E.
Washington, D.C. 20549
RE: Dreyfus Stock Index Fund, Inc.
Request for Withdrawal of Post-Effective Amendment No. 29 to the Registration
Statement on Form N-1A
(File Nos. 33-27172 and 811-5719)
Ladies and Gentlemen:
Dreyfus Stock Index Fund, Inc. (the "Fund") respectfully requests that Post-Effective Amendment No. 29 to its Registration Statement on Form N-1A (the "Registration Statement") filed on April 27, 2011 ("Post-Effective Amendment No. 29"), together with all exhibits thereto, be withdrawn pursuant to Rule 477 under the Securities Act of 1933, as amended.
The Fund is requesting withdrawal of Post-Effective Amendment No. 29 because it was inadvertently filed prior to the effectiveness date of Post-Effective Amendment No. 28 to the Fund's Registration Statement ("Post-Effective Amendment No. 28") filed on April 14, 2011. Post-Effective Amendment No. 29 was filed in order to file an exhibit containing interactive data format risk/return summary information using the eXtensible Business Reporting Language (XBRL) relating to Post-Effective Amendment No. 28. The Fund expects to file another post-effective amendment with an exhibit containing interactive data format risk/return summary information using XBRL after Post-Effective Amendment No. 28 becomes effective on April 30, 2011.
Please direct any questions regarding this matter to the undersigned at (212) 922-8023.
Sincerely,
/s/ Kara Dooley
Kara Dooley
Paralegal
