Fidelity (logo) Investments®||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| FMR Corp.
82 Devonshire Street
Boston MA 02109-3614
617 563 7000

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| January 31, 2008

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: File Room

RE:	Fidelity Securities Fund (the trust):
	Fidelity Advisor Aggressive Growth Fund (the fund)
	File Nos. 002-93601 and 811-04118

__________________________________________________________________________

Ladies and Gentlemen:

Transmitted herewith pursuant to Rule 497(j) under the Securities Act of 1933 is certification that the Prospectuses and Statement of Additional Information with respect to the above referenced fund do not differ from those filed in the most recent post-effective amendment, which was filed electronically.

||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||	Very truly yours,
	/s/ Eric D. Roiter
	Eric D. Roiter
	Secretary