U.S. stock markets experienced significant volatility over two days, with the Dow Jones Industrial Average, S&P 500, and Nasdaq all recording substantial declines on May 21, followed by a recovery to close nearly unchanged on May 22. On May 21, the Dow Jones fell 817 points, or 1.9%, to close at 41,886.81, while the S&P 500 dropped 1.6% to 5,847.85, and the Nasdaq declined 1.4% to 18,892.89. The sell-off was triggered by rising U.S. Treasury yields, with the 10-year yield reaching its highest level since February, amid concerns over the U.S. fiscal future. On May 22, the markets rebounded slightly, with the Dow Jones closing down just 22.74 points, or 0.05%, at 41,837.70, the S&P 500 also down 0.05% at 5,841.74, and the Nasdaq up 0.31% at 18,931.92. This recovery came as Treasury yields, including the 30-year yield, eased, providing some relief to investors. The volatility was influenced by the House of Representatives passing a tax and spending bill proposed by President Donald Trump, which raised concerns about the U.S. debt and deficit. Despite the choppy trading, tech stocks rallied, contributing to the Nasdaq's slight gain.