AppLovin Corporation (APP) stock surged 7.5% in pre-market trading on Monday, following the announcement that the company will be added to the prestigious S&P 500 index. The inclusion, set to take effect on September 22, marks a significant milestone for the artificial intelligence (AI)-powered mobile ad-tech platform.

S&P Dow Jones Indices, which oversees the benchmark index, revealed that AppLovin, along with Robinhood Markets and Emcor Group, will join the S&P 500 as part of the index's quarterly rebalancing. These additions will replace MarketAxess Holdings, Caesars Entertainment, and Enphase Energy. The move is designed to ensure that the index remains representative of its market capitalization range.

AppLovin's inclusion in the S&P 500 is a testament to the company's growth and market significance. With a market capitalization of approximately $169 billion, AppLovin was the largest U.S. company not previously included in the index. This development is likely to increase the stock's visibility among investors and could lead to increased demand from index funds and ETFs that track the S&P 500. As the AI sector continues to gain traction, AppLovin's position in the mobile advertising and app monetization space appears to be strengthening, potentially driving further investor interest in the stock.