One company is doing a staggering amount of heavy lifting for the entire US stock market. Nvidia accounted for roughly 15.5% of the S&P 500’s total return in 2025, a figure that should make any investor pause and think about what happens if the music stops.
The S&P 500 itself gained 17.9% over the same period. In other words, a single chipmaker was responsible for nearly one-sixth of the gains across an index that tracks 500 of the largest publicly traded companies in America.
The numbers behind the AI juggernaut
Nvidia’s share price surged nearly 40% in 2025, driven almost entirely by insatiable demand for its AI accelerators.
The company’s projected revenue for Q4 2025 sits at $65.7 billion. That represents a 67% year-over-year increase.
