245 Summer Street

Fidelity® Investments

Boston, MA 02210

September 28, 2018

U.S. Securities & Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attention: File Room

RE: Fidelity Securities Fund (the trust): File Nos. 002-93601 and 811-04118 Fidelity Blue Chip Growth Fund Fidelity Blue Chip Growth K6 Fund Fidelity Blue Chip Value Fund Fidelity Dividend Growth Fund Fidelity Flex Large Cap Growth Fund Fidelity Growth & Income Portfolio Fidelity Leveraged Company Stock Fund Fidelity OTC Portfolio Fidelity Real Estate Income Fund Fidelity Series Blue Chip Growth Fund Fidelity Series Real Estate Income Fund Fidelity Series Small Cap Opportunities Fund Fidelity Small Cap Growth Fund Fidelity Small Cap Growth K6 Fund Fidelity Small Cap Value Fund (the fund(s))

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Ladies and Gentlemen:

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

Very truly yours,

/s/Marc Bryant

Marc Bryant

Secretary of the Trust