标普道琼斯指数公司宣布，加州实时程序化营销自动化技术供应商Trade Desk将被纳入标普500指数，现有成分股Ansys（ANSS，原名Swanson分析系统公司）将被移出。Trade Desk（TTD）美股盘后短线拉升，整体涨幅10.05%。AppLovin和“网红券商”Robinhood盘后至少下跌1%。

Core Points - S&P Dow Jones Indices announced that Trade Desk, a California-based real-time programmatic marketing automation technology provider, will be added to the S&P 500 Index [1] - Existing component Ansys (ANSS), formerly known as Swanson Analysis Systems, will be removed from the index [1] - Trade Desk's stock surged by 10.05% in after-hours trading [1] - AppLovin and "meme stock" Robinhood experienced at least a 1% decline in after-hours trading [1]