Five stocks have produced every dollar of the S&P 500’s 2026 gain — and the largest, Nvidia, reports earnings after the bell tonight
The S&P 500 is up roughly 3% in 2026, and virtually every point of that advance traces back to five semiconductor stocks: Nvidia, Broadcom, AMD, Taiwan Semiconductor (via its U.S.-listed ADR), and Marvell Technology. The other 495 names in the index have, collectively, contributed almost nothing. That is the takeaway from market-attribution data tracked by…