VTI vs ITOT overlap

Nearly: 95% of the money in VTI and ITOT sits in the same companies at the same weights, as of August 31, 2026. The other 4.8% is weight differences, plus 1,139 names only in VTI and 61 only in ITOT.

95% by weight, as of August 31, 2026: nearly the same fund. 2,364 companies appear in both funds; they make up 99% of VTI and 99% of ITOT.

The largest shared positions are NVDA, AAPL, MSFT, AMZN and GOOGL. Ranked by the smaller of the two weights, which is the part you would own twice.

Out of every $100 split evenly between them, about $95 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 1,139 names only in VTI, 61 only in ITOT. Half in each behaves like 57 equally weighted stocks, against 59 for VTI alone and 55 for ITOT alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.

For every company held by both funds we take the smaller of its two weights and add them up. The weights come from the full holdings files Vanguard and iShares publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart. Sector overlap applies the same rule to the issuers' sector labels; "behaves like N equally weighted stocks" is one over the sum of the squared weights.