etf overlap tool · little overlap
QQQ vs IEFA overlap
0.1% of QQQ and IEFA is the same money, spread over 1 companies both funds hold.
Holdings as of October 16, 2026 · source: Invesco (QQQ), iShares (IEFA) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
What only one of them gives you
AMZNAmazon.com Inc4.26%Where each fund puts its money
QQQ and IEFA: what people ask
How much do QQQ and IEFA overlap?
0.1% by weight, as of October 16, 2026: little overlap. 1 companies appear in both funds; they make up 0.2% of QQQ and 0.1% of IEFA.
Which stocks do QQQ and IEFA both hold?
The largest shared positions are NBIS. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both QQQ and IEFA?
Out of every $100 split evenly between them, about $0 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 100 names only in QQQ, 2,617 only in IEFA. Half in each behaves like 112 equally weighted stocks, against 31 for QQQ alone and 263 for IEFA 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 Invesco 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.
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.