etf overlap tool · nearly the same fund
XUU vs VUN overlap
92% of XUU and VUN is the same money, spread over 2,362 companies both funds hold.
Holdings as of November 9, 2026 (XUU) and September 30, 2026 (VUN) · source: iShares (XUU), Vanguard (VUN) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
XUU holds other funds, not stocks: iShares Canada publishes every security behind them, and those are the lines compared here. Its file gives a ticker and a country but no ISIN; 99.9% of its stock money was matched to one.
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 XUU and VUN with other funds or stocks? The free portfolio optimizer opens XUU 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 CLASS C1.86%2.17%
What only one of them gives you
QRVOQorvo Inc0.01%Where each fund puts its money
XUU and VUN: what people ask
Is VUN the same as XUU?
Nearly: 92% of the money in XUU and VUN sits in the same companies at the same weights, as of September 30, 2026. The other 8.2% is weight differences, plus 54 names only in XUU and 1,154 only in VUN.
How much do XUU and VUN overlap?
92% by weight, as of September 30, 2026: nearly the same fund. 2,362 companies appear in both funds; they make up 99% of XUU and 99% of VUN.
Which stocks do XUU and VUN both hold?
The largest shared positions are AAPL, NVDA, 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 XUU and VUN?
Out of every $100 split evenly between them, about $92 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 54 names only in XUU, 1,154 only in VUN. Half in each behaves like 57 equally weighted stocks, against 59 for XUU 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 iShares and 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.