AI Frenzy Drove the S&P 500’s Best Two-Year Gains Since the Dot-Com Era

Stocks rallied in 2024, delivering a second consecutive year of gains exceeding 20%, as investors embraced cooling inflation, falling interest rates and the prospect of lower corporate taxes under a second Trump administration. The last time the S&P 500 achieved two or more straight years of +20% growth was during the late 1990s, when the internet boom fueled market optimism.

Much like those high-flying days, 2024 saw tech stocks capture investors’ imaginations. This time, though, it was the promise of artificial intelligence (AI) that drove enthusiasm.

Among the top five best-performing S&P 500 stocks, two (Palantir and NVIDIA) are directly tied to AI, while two others (Vistra and GE Vernova) benefit indirectly through increased energy demand. United Airlines, the fifth-best stock, is reportedly integrating AI to streamline operations like notifications and pilot rebooking, but investor excitement appears largely centered on the recent travel boom and United’s $1.5 billion share buyback program.

2024 BEST PERFORMING