Index Shuffling: Extra Space Storage To Join S&P 500, EPR Properties To Join MidCap 400, WWE To Join SmallCap 600

S&P Dow Jones announced on Wednesday several changes to its S&P 500, S&P MidCap 400 and S&P SmallCap 600 indices.

Extra Space Storage, Inc. EXR will replace Chubb Corp CB in the S&P 500 index as the company was acquired by ACE Limited ACE.

EPR Properties EPR, a self-administered REIT company, will replace Extra Space Storage in the S&P MidCap 400 index while US Concrete Inc USCR will replace EPR Properties in the S&P SmallCap 600 index.

Finally, World Wrestling Entertainment, Inc. WWE will replace Wausau Paper Corp. WPP in the S&P SmallCap 600 index as the exiting company has been acquired by Sweden-based SCA.

Of note, shares of WWE jumped higher by more than 4 percent early Thursday morning and were trading at $16.70.