NEW YORK, Feb. 27, 2025 /PRNewswire/ -- Entegris Inc. (NASD: ENTG) will replace Arcadium Lithium plc (NYSE: ALTM) in the S&P MidCap 400 effective prior to the opening of trading on Thursday, March 6. Rio Tinto plc (ASX: RIO) is acquiring Arcadium Lithium in a deal expected to be completed soon, pending final closing conditions.
Following is a summary of the changes that will take place prior to the open of trading on the effective date:
Effective Date | Index Name | Action | Company Name | Ticker | GICS Sector |
March 6, 2025 | S&P MidCap 400 | Addition | Entegris | ENTG | Information Technology |
March 6, 2025 | S&P MidCap 400 | Deletion | Arcadium Lithium | ALTM | Materials |
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