NEW YORK, April 2, 2026
NEW YORK, April 2, 2026 /PRNewswire/ -- Atmus Filtration Technologies Inc. (NYSE: ATMU) will replace Air Lease Corp. (NYSE: AL) in the S&P SmallCap 600 effective prior to the opening of trading on Thursday, April 9. Sumitomo Corporation & Consortium are acquiring Air Lease Corp 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 | |
| April 9, 2026 | S&P SmallCap 600 | Addition | Atmus Filtration Technologies | ATMU | Industrials | |
| April 9, 2026 | S&P SmallCap 600 | Deletion | Air Lease | AL | Industrials | |
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SOURCE S&P Dow Jones Indices
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