The ten largest companies are 25.1% of the world's stock index, against 39.1% of the S&P 500
The 13 hyperscalers and chip makers listed on the page are 21.4% of the world fund and 28.8% of the S&P 500 · Companies it takes to reach half of each fund: world 83, US small caps 293, Europe 54, S&P 500 22 · Weights of each fund's own index; the site records the daily share from its first pull
Companies/Indices · Companies · BlackRock iShares (ACWI, IWM and IEUR holdings) and State Street (SPY holdings) · 4 Nov 2026