At the closing bell, SPN is down about 3.2%, while AIZ is trading flat on the day Wednesday.

FORBES: Superior Energy Services Larger Than S&P 500 Component Assurant

No. 2, Travelers Inc. ( TRV) with 17.5% and No. 1, Assurant Inc. ( AIZ) with a total of 21.1%.

FORBES: Connect

According to the ETF Finder at ETF Channel, SPN and AIZ collectively make up 1.14% of the WisdomTree MidCap Earnings Fund ETF (EZM) which is lower by about 1.3% on the day Wednesday.

FORBES: Superior Energy Services Larger Than S&P 500 Component Assurant