497 1 d549410d497.htm BLACKROCK MANAGED VOLATILITY PORTFOLIO BlackRock Managed Volatility Portfolio
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June 6, 2013                    

VIA EDGAR

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

 

  Re:

BlackRock Managed Volatility Portfolio of BlackRock FundsSM

Securities Act File No. 33-26305

Investment Company Act File No. 811-05742                                

Ladies and Gentlemen:

On behalf of BlackRock FundsSM and pursuant to Rule 497(e) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in a supplement, dated May 31, 2013, to the Prospectus, dated January 28, 2013, of BlackRock Managed Volatility Portfolio (the “Fund”). The purpose of this filing is to submit the 497(e) filing dated May 31, 2013 in XBRL for the Fund.

Any questions or comments on this filing should be directed to the undersigned at (212) 839-5583.

 

Very truly yours,

 

/s/ Ellen W. Harris

Ellen W. Harris

Enclosures

 

cc: Benjamin Archibald, Esq.

BlackRock Advisors, LLC

Sidley Austin (NY) LLP is a Delaware limited liability partnership doing business as Sidley Austin LLP and practicing in affiliation with other Sidley Austin partnerships.