West Pharmaceutical Services Set to Join S&P 500; Physicians Realty Trust to Join S&P MidCap 400; Helmerich & Payne to Join S&P SmallCap 600

NEW YORK, May 18, 2020 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P 500, the S&P MidCap 400 and S&P SmallCap 600 effective prior to the open of trading on Friday, May 22: S&P MidCap 400 constituent West Pharmaceutical Services Inc. (NYSE: WST) will...

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