etf overlap tool · little overlap
IWM vs VO overlap
IWM and VO hold no company in common. Still, 83% of their money sits in the same sectors, led by Financials; they part most on Health Care: 20% of IWM against 9.2% of VO.
Holdings as of September 30, 2026 · source: iShares (IWM), Vanguard (VO) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Hold IWM and VO with other funds or stocks? The free portfolio optimizer opens IWM and VO 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
No stock in common, 83% in the same sectors
IWM and VO: what people ask
How much do IWM and VO overlap?
None by holdings, as of September 30, 2026: no company appears in both funds. By sector, 83% of their money sits in the same sectors, led by Financials.
Which stocks do IWM and VO both hold?
None. IWM and VO have no holding in common.
Is it redundant to hold both IWM and VO?
No. Out of every $100 split evenly between them, none buys the same company. Half in each gives you 2,242 different holdings that behave like 662 equally weighted stocks, against 834 for IWM alone and 206 for VO 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 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.