S&P Announces Changes to U.S. Index (WST for SIE)

February 26, 2008 5:25 PM EST

West Pharmaceutical Services Inc. (NYSE: WST) will be added to the S&P SmallCap 600 after the close of trading on Thursday, February 28, 2008. West Pharmaceutical Services will take the place of Sierra Health Services Inc. (NYSE: SIE), which was removed from the S&P SmallCap 600 after today’s close of trading pursuant to its completed acquisition by S&P 500 constituent UnitedHealth Group Inc. (NYSE: UNH).

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