U.S. stock markets posted their biggest gains in over two months, led by the S&P 500's 1.8% rise after lower-than-expected core inflation data. Strong performances from major banks, particularly Wells Fargo and Citigroup, supported the rally, increasing expectations for Federal Reserve interest rate cuts. The Dow Jones and Nasdaq also saw notable hikes of 1.7% and 2.5%, respectively, as markets reacted positively to economic indicators and bank earnings, reflecting growing investor confidence amid easing inflation concerns.