Trade Desk's stock jumps on S&P 500 inclusion as Ansys exits index due to acquisition

Group 1 - The Trade Desk's shares increased by 14% in extended trading due to its upcoming inclusion in the S&P 500 index [1][4] - The Trade Desk will replace Ansys in the S&P 500 as part of a corporate acquisition process involving Synopsys, which is finalizing a $35 billion acquisition of Ansys [2][3] - The Trade Desk's market cap is approximately $37 billion, positioning it in the middle range of the S&P 500 by valuation [4] Group 2 - The Trade Desk has experienced a significant decline in its stock price, down 36% in 2025, following a 63% increase in 2022 and a 61% increase in 2023 [3][4] - The company was founded in 2009 and went public in 2016, currently employing over 3,522 individuals [4] - The Trade Desk competes with major companies such as Amazon and Google in the digital advertising space [4]