VTI

Vanguard Total Stock Market ETF (VTI)

Vanguard. Tracks the CRSP US Total Market Index — essentially every investable US stock (~3,500 large-, mid-, small- and micro-cap names), cap-weighted. The 'own everything American' index, the broad-market sibling to Vanguard's S&P-500-only VOO. 0.03% expense ratio.

The maximal passive US-equity baseline: ~3,500 stocks vs VOO's 500, so it owns the entire S&P 500 plus the mid-, small-, and micro-cap tail the S&P excludes. Because it is still cap-weighted, the megacaps dominate anyway — Information Technology is ~37% of the fund and the same Magnificent-7 / AI-compute names lead — so VTI captures essentially the same AI trade as VOO with a slightly thinner megacap concentration and a long diversifying tail. The 'own everything American, let the winners compound to the top' base position.