Several previously announced index changes go into effect after the close of trading today, including GMCR moving up to the S&P500
- S&P 500 constituent Biogen Idec Inc. (NASD:BIIB) will replace S&P 500 constituent American Electric Power Company Inc. (NYSE:AEP) in the S&P 100.
- S&P MidCap 400 constituent Keurig Green Mountain Inc. (NASD:GMCR) will replace WPX Energy Inc. (NYSE:WPX) in the S&P 500, and WPX Energy will replace Keurig Green Mountain in the S&P MidCap 400.
- S&P MidCap 400 constituent Matson Inc. (NASD:MATX) will replace Kate Spade & Company (NYSE:KATE) in the S&P SmallCap 600, and Kate Spade will replace Matson in the S&P MidCap 400.