Alcoa rose nearly 5% in premarket trading as it will join in the S&P MidCap 400.
Alcoa Corp. will replace Hill-Rom Holdings Inc. in the S&P MidCap 400 before trading begins on Dec. 20, according to S&P Dow Jones Indices.S&P 500 constituent Baxter International Inc. acquired Hill-Rom in a deal that closed today.
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