On St. Patrick's Day, major U.S. stock indexes experienced positive momentum, with the Dow Jones Industrial Average rising by 1.11%, the S&P 500 increasing by 1.00%, and the Nasdaq gaining 0.82%. Notably, 461 of the S&P 500 constituents were in positive territory, while only four stocks within the Dow, including Boeing ($BA), Amazon ($AMZN), American Express ($AXP), and Nvidia ($NVDA), were in the red. The S&P 500's rise marked the end of a 17-day streak without consecutive up days, maintaining the tradition of market gains typically seen on St. Patrick's Day. The Russell 2000 index also reported a gain of 1.4%. Overall, the market sentiment was buoyed by the day's green theme, aligning with the festive spirit of the holiday.