ABIOMED Set to Join S&P 500; Others to Join S&P MidCap 400 and S&P SmallCap 600

NEW YORK, May 25, 2018 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P 500, S&P MidCap 400 and S&P SmallCap 600: S&P MidCap 400 constituent ABIOMED Inc. (NASD: ABMD) will replace Wyndham Worldwide Corp. (NYSE: WYN) in the...