The three major stock indexes of the US stock market opened with mixed gains and losses, with Coinbase rising more than 15% At the opening of the US stock market, the three major stock indexes fluctuated, with the Dow Jones Industrial Average falling 0.4%, the S&P 500 index rising 0.1%, and the Nasdaq rising 0.2%. Nvidia (NVDA. O) rose 1.4% as US media reported that the US will push Saudi Arabia to acquire artificial intelligence chips. Coinbase (COIN) has risen by over 15%. This morning, it was reported that Coinbase will join the S&P 500 index on May 19th.