Guidewire Software Set to Join S&P MidCap 400; Arrowhead Pharmaceuticals to Join S&P SmallCap 600

NEW YORK, Jan. 22, 2025 /PRNewswire/ -- Guidewire Software Inc. (NYSE:GWRE) will replace Arrowhead Pharmaceuticals Inc. (NASD: ARWR) in the S&P MidCap 400, and Arrowhead Pharmaceuticals will replace Barnes Group Inc. (NYSE:B) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, January 27. S&P 500 constituent Apollo Global Management Inc. (NYSE:APO) is acquiring Barnes Group in a deal expected to be completed soon pending final conditions.

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

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