NEW YORK, Oct. 23 /PRNewswire-FirstCall/ -- Standard & Poor's will make the following changes to the S&P 500 and S&P MidCap 400 indices:

    -- S&P MidCap 400 constituent Jacobs Engineering (NYSE:JEC) will replace
       Avaya Inc. (NYSE:AV) in the S&P 500, and CF Industries Holdings
       (NYSE:CF) will replace Jacobs Engineering in the S&P MidCap 400, after
       close of trading on Thursday, October 25.  Avaya Inc. is being acquired
       by Silver Lake Partners and TPG Capital in a deal expected to close on
       or about that date, pending final approvals.

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

Jacobs Engineering provides technical, professional, and construction services to industrial, commercial, and governmental customers worldwide. Headquartered in Pasadena, California, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Construction & Engineering Sub-Industry index.

CF Industries Holdings engages in the manufacture and distribution of nitrogen and phosphate fertilizer products in North America. Headquartered in Deerfield, Illinois, the company will be added to the S&P MidCap 400 GICS Fertilizer & Agricultural Chemicals Sub-Industry index.

    Following is a summary of the changes:

                       S&P 500 INDEX - October 25, 2007

                   COMPANY        GICS ECONOMIC         GICS SUB-INDUSTRY
                                     SECTOR
    ADDED         Jacobs           Industrials      Construction & Engineering
                  Engineering
    DELETED       Avaya Inc.       Information      Communications Equipment
                                   Technology

                   S&P MIDCAP 400 INDEX - October 25, 2007

                   COMPANY        GICS ECONOMIC       GICS SUB-INDUSTRY
                                     SECTOR
    ADDED         CF Industries     Materials       Fertilizer & Agricultural
                  Holdings                                   Chemicals
    DELETED       Jacobs            Industrials     Construction & Engineering
                  Engineering

Additions to and deletions from an S&P equity index do not in any way reflect an opinion on the investment merits of the companies concerned.

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Source: Standard & Poor's