Corebridge Financial Set to Join S&P MidCap 400

NEW YORK , Dec. 12, 2025/PRNewswire / -- Corebridge Financial Inc. (NYSE: CRBG) will replace Allete Inc. (NYSE: ALE) in the S&P MidCap 400 effective prior to the open of trading on Wednesday, December 17. Canada Pension Plan Investment Board and Global Infrastructure Partners are acquiring Allete in a deal expected to close soon, pending final closing conditions.

Following is a summary of the change that will take place prior to the open of trading on the effective date:

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