etf overlap · little overlap
IWM vs XLC overlap
IWM and XLC hold no company in common, and their sectors barely meet (2.4% in common): IWM is 20% Health Care, XLC 100% Communication Services.
Holdings as of September 24, 2026 · source: iShares (IWM), SPDR (XLC) · How we measured all 1,035 pairs
- same money
- same companies, extra weight
- only in this fund
What only one of them gives you
No stock in common, 2.4% in the same sectors
IWM and XLC: what people ask
How much do IWM and XLC overlap?
None by holdings, as of September 24, 2026: no company appears in both funds. By sector, 2.4% of their money sits in the same sectors, led by Communication Services.
Which stocks do IWM and XLC both hold?
None. IWM and XLC have no holding in common.
Is it redundant to hold both IWM and XLC?
No. Out of every $100 split evenly between them, none buys the same company. Half in each gives you 1,997 different holdings that behave like 39 equally weighted stocks, against 842 for IWM alone and 10 for XLC 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 SPDR 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.