NEW YORK, Dec. 20 /PRNewswire/ -- S&P SmallCap 600 constituent Southwestern Energy (NYSE:SWN) will replace PacifiCare Health Systems Inc. (NYS: PHS) in the S&P MidCap 400 after the close of trading on a date to be announced. PacifiCare Health Systems is being acquired by S&P 500 constituent United Health Group Inc. (NYSE:UNH) in a deal that is still pending final approvals. Playtex Products (NYSE:PYX) will replace Southwestern Energy in the S&P SmallCap 600 Index. Standard & Poor's will monitor this transaction, and post any relevant updates on its website: http://www.standardandpoors.com/. Southwestern Energy is an integrated natural gas company whose wholly- owned subsidiaries are engaged in oil and gas exploration and production, natural gas gathering, transmission, and marketing, and natural gas distribution. Headquartered in Houston, Texas, the company will be added to the S&P MidCap 400 GICS (Global Industry Classification Standard) Oil & Gas Exploration & Production Sub-Industry Index. Playtex Products is a leading manufacturer and distributor of a diversified portfolio of Feminine Care, Infant Care and Skin Care products, including Playtex tampons, Playtex infant feeding products, Diaper Genie, Banana Boat, Wet Ones and Playtex gloves. Headquartered in Westport, Connecticut, the company will be added to the S&P SmallCap 600 GICS Personal Care Sub-Industry Index. Following is a summary of the changes: S&P MIDCAP 400 INDEX - TBA COMPANY GICS ECONOMIC SECTOR GICS SUB-INDUSTRY ADDED Southwestern Energy Energy Oil & Gas Exploration & Production DELETED PacifiCare Health Health Care Managed Health Care Systems S&P SMALLCAP 600 INDEX - TBA COMPANY GICS ECONOMIC SECTOR GICS SUB-INDUSTRY ADDED Playtex Products Consumer Staples Personal Products DELETED Southwestern Energy Energy Oil & Gas Exploration & Production 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. Standard & Poor's, a division of The McGraw-Hill Companies (NYSE:MHP), is the world's foremost provider of independent credit ratings, indices, risk evaluation, investment research, data and valuations. With 6000 employees in 21 countries, Standard & Poor's is an essential part of the world's financial infrastructure, and has played a leading role for more than 140 years in providing investors with the independent benchmarks they need to feel more confident about their investment and financial decisions. For more information, visit http://www.standardandpoors.com/. Founded in 1888, The McGraw-Hill Companies is a leading global information services provider meeting worldwide needs in the financial services, education and business information markets through leading brands such as Standard & Poor's, BusinessWeek and McGraw-Hill Education. The Corporation has more than 300 offices in 40 countries. Sales in 2004 were $5.3 billion. Additional information is available at http://www.mcgraw-hill.com/. DATASOURCE: Standard & Poor's CONTACT: David M. Blitzer, Ph.D. Managing Director & Chairman of the Index Committee +1-212-438-3907 Web site: http://www.standardandpoors.com/ http://www.mcgraw-hill.com/

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