etf overlap tool · nearly the same fund
IEFA vs VIU overlap
85% of IEFA and VIU is the same money, spread over 2,410 companies both funds hold.
Holdings as of October 16, 2026 (IEFA) and September 30, 2026 (VIU) · source: iShares (IEFA), Vanguard (VIU) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Vanguard's files give an ISIN with each line: 99.9% of its stock money is matched on one.
Hold IEFA and VIU with other funds or stocks? The free portfolio optimizer opens IEFA and VIU 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.
What only one of them gives you
SPOTSPOTIFY TECHNOLOGY0.31%Where each fund puts its money
IEFA and VIU: what people ask
Is VIU the same as IEFA?
Nearly: 85% of the money in IEFA and VIU sits in the same companies at the same weights, as of September 30, 2026. The other 15% is weight differences, plus 208 names only in IEFA and 1,267 only in VIU.
How much do IEFA and VIU overlap?
85% by weight, as of September 30, 2026: nearly the same fund. 2,410 companies appear in both funds; they make up 98% of IEFA and 85% of VIU.
Which stocks do IEFA and VIU both hold?
The largest shared positions are ASML, HSBA, ROP, SHEL and NOVN. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both IEFA and VIU?
Out of every $100 split evenly between them, about $85 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 208 names only in IEFA, 1,267 only in VIU. Half in each behaves like 263 equally weighted stocks, against 263 for IEFA alone and 211 for VIU 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.