Market Overview

S&P Indices Announces Change to US Index


Momenta Pharmaceuticals (NASDAQ: MNTA) will replace HealthSpring (NYSE: HS) in the S&P SmallCap 600 index after the close of trading on Tuesday, January 31. S&P 500 constituent Cigna Corp. (NYSE: CI) is acquiring HealthSpring in a deal expected to be completed on January 30, pending final approvals.

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