US stock market ends 2025 on a high note after volatile year BBC December 31, 2025 It’s been a roller coaster year for the stock market, but the S&P 500 is set to end 2025 up about 17%, the third straight year of double-digit gains.About The Author BBC See author's postsPost navigationPrevious: What Canadians are hopeful for in 2026Next: The MetroCard Never Got Its Due