Coinbase is joining the S&P 500, replacing Discover Financial Services in the benchmark index, according to a release on Monday. Shares of the crypto exchange jumped 8% in extended trading. The change will take effect before trading on May 19. Discover is in the process of being acquired by Capital One Financial. Since going public through a direct listing in 2021, Coinbase has become a bigger part of the U.S. financial system, with bitcoin soaring in value and large institutions gaining regulatory approval to create spot bitcoin exchange-traded funds. However, Coinbase has been a particularly volatile stock and is ... (full story)