U.S. stock markets will close at 4:00 p.m. ET on New Year's Eve, while bond markets close early at 2:00 p.m. All U.S. financial markets will be closed on New Year's Day and will reopen on January 2, 2026. The S&P 500, Nasdaq, and Dow Jones have seen significant gains in 2025, rallying 17%, 21%, and 14% respectively. Investors are anticipating further market trends based on 2026 earnings and Federal Reserve decisions.