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Trade Desk Surges 14% as S&P 500 Replacement Announced

7/15/2025

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Summary

Story summary

Trade Desk (TTD) will replace Ansys (ANSS) in the S&P 500 index on July 18.
Following the announcement, TTD shares surged 14% in after-hours trading.
The company, based in Ventura, California, has a market cap of $37 billion.
Despite gains in 2023 and 2024, TTD's stock has declined 36% in 2025.

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Story summary

Trade Desk (TTD) will replace Ansys (ANSS) in the S&P 500 index on July 18.
Following the announcement, TTD shares surged 14% in after-hours trading.
The company, based in Ventura, California, has a market cap of $37 billion.
Despite gains in 2023 and 2024, TTD's stock has declined 36% in 2025.