The S&P 500 Index ($SPX) is more than just a list of 500 (or so) U.S. companies. It is a barometer that reflects 80% of the nation’s stock market value. For companies, getting added to the benchmark index means an instant boost as tracking funds and indices rush to buy shares, driving up demand and price. Palantir Technologies (PLTR) just scored that milestone, and is set to join the S&P 500 on Sept. 23 as part of a quarterly rebalancing.
This move marks a new chapter for Palantir, validating its rise in artificial intelligence (AI) and data analytics. Investors have reason to celebrate, with the stock surging triple digits in 2024 - and up 17% just this week alone, fueled by growing retail enthusiasm and bullish analyst forecasts.
