etf overlap tool · nearly the same fund
VTI vs VUN overlap
100% of VTI and VUN is the same money, spread over 3,516 companies both funds hold.
Holdings as of September 30, 2026 · source: Vanguard (VTI), Vanguard (VUN) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
VUN holds one fund, VTI (99.8% of its money), not stocks: the lines here are the 3,516 stocks of VTI, from Vanguard's own month-end file. Vanguard's files give an ISIN with each line: 99.9% of its stock money is matched on one.
Hold VTI and VUN with other funds or stocks? The free portfolio optimizer opens VTI and VUN beside the rest of what you own: the companies you hold twice, what the funds cost a year, and where the next deposit should go. No account.
The companies you would own twice
GOOGAlphabet Inc2.18%2.17%
What only one of them gives you
Every VTI holding is also in the other fund.
Every VUN holding is also in the other fund.
Where each fund puts its money
VTI and VUN: what people ask
Is VUN the same as VTI?
Nearly: 100% of the money in VTI and VUN sits in the same companies at the same weights, as of September 30, 2026. The other 0.5% is weight differences, plus 0 names only in VTI and 0 only in VUN.
How much do VTI and VUN overlap?
100% by weight, as of September 30, 2026: nearly the same fund. 3,516 companies appear in both funds; they make up 99.7% of VTI and 99.5% of VUN.
Which stocks do VTI and VUN both hold?
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.
Is it redundant to hold both VTI and VUN?
Out of every $100 split evenly between them, about $100 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 0 names only in VTI, 0 only in VUN. Half in each behaves like 55 equally weighted stocks, against 55 for VTI alone and 55 for VUN alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.
How is ETF overlap calculated here?
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 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.
Weights come from each issuer's published holdings file and are matched company by company on their ISIN. Cash, futures and currency positions are left out. This page describes what the funds hold; it is not investment advice.