497 1 d541876d497.htm BLACKROCK SMALL CAP GROWTH EQUITY PORTFOLIO BlackRock Small Cap Growth Equity Portfolio

 

LOGO

  

 

SIDLEY AUSTIN LLP

787 SEVENTH AVENUE

NEW YORK, NY 10019

(212) 839 5300

(212) 839 5599 FAX

  

 

BEIJING

BRUSSELS

CHICAGO

DALLAS

FRANKFURT

GENEVA

HONG KONG

HOUSTON

LONDON

 

FOUNDED 1866

  

 

LOS ANGELES

NEW YORK

PALO ALTO

SAN FRANCISCO

SHANGHAI

SINGAPORE

SYDNEY

TOKYO

WASHINGTON, D.C.

May 22, 2013

VIA EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

 

  Re:

BlackRock Small Cap Growth Equity Portfolio, a series of BlackRock FundsSM

(File Nos. 33-26305, 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 March 1, 2013, to the Prospectuses, dated January 28, 2013, of BlackRock Small Cap Growth Equity Portfolio (the “Fund”). The purpose of this filing is to submit the 497(e) filing dated March 1, 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.