ETF section · overlap check
ETF overlap — how much two funds hold in common
Pick two US-listed funds. The check reads both full holdings lists and shows how much of the money sits in the same stocks, how many positions they share, and which shared names weigh most. Covers the 248 funds on the ETF page.
Pick two funds and press Compare.
| Holding | A | B | Shared |
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Overlap by weight = the sum over every stock both funds hold of the smaller of its two weights. Holdings as published by the issuers through our data vendor, up to 600 positions per fund; share classes of the same company can be listed separately and are matched by code. What two funds hold, not which one to buy — an investment diary, not advice.
FAQ · from the current data
Quick answers
What is ETF overlap?
The share of one fund’s money that sits in the same stocks as another fund’s. Closelook measures it as the sum, over every stock both funds hold, of the smaller of the two weights. Two funds that each hold Nvidia at 8% and 5% overlap by 5% in that name. An overlap of 70% means seven tenths of the money is invested the same way in both funds.
Why does overlap matter?
Two funds with different names can hold the same largest companies. A Nasdaq-100 fund and a technology sector fund, or an S&P 500 fund and a growth fund, often share most of their weight — holding both adds less diversification than the two names suggest.
Where do the holdings come from?
From the fund data published by the issuers via Closelook’s market-data vendor, up to 600 positions per fund, refreshed daily. Holdings dates can differ by a few days between two funds; the date is shown with each result.