497 1 xdf092313sec.htm 497 XBRL FILING - DWS SECURITIES TRUST - DWS RREEF REAL ESTATE SECURITIES INCOME FUND xdf092313sec.htm  
 RULE 497 DOCUMENT

On behalf of DWS RREEF Real Estate Securities Income Fund, a series of DWS Securities Trust (the “Fund”), and pursuant to Rule 497(c) under the Securities Act of 1933, as amended (the “Securities Act”), the purpose of this filing is to submit an interactive data file in the manner provided by Rule 405 of Regulation S-T and General Instruction C.3.(g) of Form N-1A.  The interactive data file included as an exhibit to this filing relates to the form of prospectus filed with the Securities and Exchange Commission on behalf of the Fund pursuant to Rule 497(c) under the Securities Act on September 23, 2013; such form of prospectus (accession number 0000088053-13-001059) is incorporated by reference into this Rule 497 Document.