CORRESP 11 filename11.htm

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FPCMS
82 Devonshire Street
Boston MA 02109-3614
617-563-7000

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July 17, 2006

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attn: Christian Sandoe

RE:

Fidelity Securities Fund (the trust):

Fidelity Blue Chip Growth Fund (the fund)

File Nos. 002-93601 and 811-04118

Post-Effective Amendment No. 68

Ladies and Gentlemen:

Pursuant to Rule 8b-16 under the Investment Company Act of 1940, as amended, Regulation S-T and Rule 485(a) under the Securities Act of 1933, as amended, transmitted herewith on behalf of the trust is Post-Effective Amendment No. 68 to the trust's current effective Registration Statement on Form N-1A. This transmission contains a conformed signature page, the manually signed original of which, executed pursuant to Powers of Attorney dated June 14, 2001 and July 1, 2006, is maintained at the offices of the trust.

This filing contains the Prospectus and Statement of Additional Information for Fidelity Blue Chip Growth Fund. The documents have been tagged to indicate modifications and editorial changes made since the last definitive filing. The funds may be marketed through banks, savings and loan associations, or credit unions.

This filing serves to update certain disclosure, incorporate supplements to the Prospectus and Statement of Additional Information, and implement certain editorial changes. Principal changes and additions include adoption of a new performance adjustment index.

Pursuant to Rule 485(a), the trust elects an effective date of September 29, 2006. We request your comments by August 17, 2006.

Please contact Lillie Lucas at (617) 563-4234 in connection with any questions or comments regarding this filing.

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Sincerely,

/s/ Patricia Nadeau

Patricia Nadeau

Legal Product Group