US stock market ends 2025 on a high note after volatile year

US stock market ends 2025 on a high note after volatile year1 hour agoDanielle KayeBusiness reporterMichael Nagle/Bloomberg via Getty ImagesIt's been a roller-coaster year for financial markets - but US stock investors are heading into 2026 on a high note.US President Donald Trump's global trade tariffs sent shockwaves through markets in the spring. But by summer, the US saw record highs fuelled by strong company profits and confidence in artificial intelligence investments.The S&P 500 index is on track to ...