NEW YORK, Jan. 29 /PRNewswire/ -- S&P MidCap 400 constituent Urban Outfitters Inc. (Nasdaq: URBN) will replace Affiliated Computer Services Inc. (NYSE: ACS) in the S&P 500 index, and Intrepid Potash Inc. (NYSE: IPI) will replace Urban Outfitters in the S&P MidCap 400 index on a date to be announced. Affiliated Computer Services is being acquired by S&P 100 & 500 constituent Xerox Corp. (NYSE: XRX) in a deal expected to be completed soon, pending final approvals.

Standard & Poor's will monitor this transaction, and post any relevant updates on its website: www.standardandpoors.com.

Urban Outfitters operates retail specialty stores. Headquartered in Philadelphia, PA, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Apparel Retail Sub-Industry index.

Intrepid Potash engages in the production and marketing of potassium chloride and langbeinite. Headquartered in Denver, CO, the company will be added to the S&P MidCap 400 GICS Fertilizers & Agricultural Chemicals Sub-Industry index.

Following is a summary of the changes: 




                              S&P 500 INDEX  -  TBA
                              ----------------------
                                   
                              GICS ECONOMIC     
                COMPANY          SECTOR          GICS SUB-INDUSTRY
                -------       -------------      -----------------
                 Urban          Consumer         
     ADDED    Outfitters      Discretionary        Apparel Retail
     -----    -----------     -------------        --------------
                                                       Data
               Affiliated                          Processing &
                Computer       Information          Outsourced
    DELETED     Services       Technology             Services
    -------   -----------      -----------         --------------





                           S&P MIDCAP 400 INDEX  -  TBA
                           -----------------------------
                            GICS ECONOMIC       
                COMPANY         SECTOR         GICS SUB-INDUSTRY
                -------      -------------     -----------------
                                                 Fertilizers &
               Intrepid                           Agricultural
     ADDED      Potash        Materials            Chemicals
     -----    ---------       ---------          --------------
                 Urban         Consumer          
    DELETED   Outfitters    Discretionary        Apparel Retail
    -------   ----------    -------------        --------------

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SOURCE Standard & Poor's