NEW YORK , July 14, 2025 /PRNewswire/ -- The Trade Desk Inc. (NASD: TTD) will replace ANSYS Inc. (NASD: ANSS) in the S&P 500 effective prior to the opening of trading on Friday, July 18 . S&P 500 constituent Synopsys Inc. (NASD: SNPS) will acquire ANSYS in a deal expected to be completed on July 17 .

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

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