etf overlap tool · little overlap
XLK vs EFA overlap
XLK and EFA hold no company in common. Still, 10% of their money sits in the same sectors, led by Information Technology, which is 100% of XLK against 10% of EFA.
Holdings as of October 16, 2026 · source: SPDR (XLK), iShares (EFA) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Hold XLK and EFA with other funds or stocks? The free portfolio optimizer opens XLK and EFA 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
NVDANVIDIA CORP15.45%
AAPLAPPLE INC14.94%
MSFTMICROSOFT CORP11.71%
AVGOBROADCOM INC4.66%
INTCINTEL CORP2.69%
PLTRPALANTIR TECHNOLOGIES INC A2.58%No stock in common, 10% in the same sectors
XLK and EFA: what people ask
How much do XLK and EFA overlap?
None by holdings, as of October 16, 2026: no company appears in both funds. By sector, 10% of their money sits in the same sectors, led by Information Technology.
Which stocks do XLK and EFA both hold?
None. XLK and EFA have no holding in common.
Is it redundant to hold both XLK and EFA?
No. Out of every $100 split evenly between them, none buys the same company. Half in each gives you 730 different holdings that behave like 52 equally weighted stocks, against 14 for XLK alone and 194 for EFA alone. Whether that mix suits you depends on what you want to own; 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 SPDR 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.