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S&P Global Inc, Home Depot Inc, Mirion Technologies Inc

Mirion Technologies Set to Join S&P SmallCap 600

NEW YORK , Sept. 4, 2025 /PRNewswire/ -- Mirion Technologies Inc. (NYSE: MIR) will replace GMS Inc. (NYSE: GMS) in the S&P SmallCap 600 effective prior to the opening of trading on Tuesday, September 9. S&P 500 and 100 constituent Home Depot Inc. (NYSE: HD) acquired GMS in a deal that was completed today.

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

Effective Date

Index Name

Action

Company Name

Ticker

GICS Sector

September 9, 2025

S&P SmallCap 600

Addition

Mirion Technologies

MIR

Information Technology

September 9, 2025

S&P SmallCap 600

Deletion

GMS

GMS

Industrials

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SOURCE S&P Dow Jones Indices