NEW YORK, June 30, 2026 /PRNewswire/ -- Allison Transmission Holdings Inc. (NYSE: ALSN) will replace Goodyear Tire & Rubber Co. (NASD: GT) in the S&P MidCap 400, and Goodyear Tire & Rubber will replace Stellar Bancorp Inc. (NYSE: STEL) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, July 6. S&P MidCap 400 constituent Prosperity Bancshares Inc. (NYSE: PB) is acquiring Stellar Bancorp in a deal expected to close July 1.
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
July 6, 2026 S&P MidCap 400 Addition Allison Transmission ALSN
Industrials
July 6, 2026 S&P MidCap 400 Deletion Goodyear Tire & GT Consumer
Rubber Discretionary
July 6, 2026 S&P SmallCap 600 Addition Goodyear Tire & GT Consumer
Rubber Discretionary
July 6, 2026 S&P SmallCap 600 Deletion Stellar Bancorp STEL
Financials
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