The S&P 500 Rose 14%. Its Typical Stock Rose 6%, and 195 of 500 Fell

The S&P 500 rose 13.7% from October 20, 2025 to October 16, 2026. But the typical stock in it rose just 6.2%, and 195 of its 500 companies fell. The ten biggest companies make up about 40% of the largest S&P 500 fund, yet even they split: Micron more than quadrupled while Tesla, Broadcom and Meta fell. An equal-weight fund rose 12.7%, almost as much as the index: a few huge winners lift the total while the middle stock lags.