etf overlap tool · little overlap
IWM vs SOXX overlap
IWM and SOXX hold no company in common. Still, 13% of their money sits in the same sectors, led by Information Technology, which is 100% of SOXX against 13% of IWM.
Holdings as of October 16, 2026 · source: iShares (IWM), iShares (SOXX) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Hold IWM and SOXX with other funds or stocks? The free portfolio optimizer opens IWM and SOXX 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
NVDANVIDIA7.98%
MUMICRON TECHNOLOGY7.55%
AVGOBROADCOM INC7.31%
ADIANALOG DEVICES4.49%
No stock in common, 13% in the same sectors
IWM and SOXX: what people ask
How much do IWM and SOXX overlap?
None by holdings, as of October 16, 2026: no company appears in both funds. By sector, 13% of their money sits in the same sectors, led by Information Technology.
Which stocks do IWM and SOXX both hold?
None. IWM and SOXX have no holding in common.
Is it redundant to hold both IWM and SOXX?
No. Out of every $100 split evenly between them, none buys the same company. Half in each gives you 2,001 different holdings that behave like 76 equally weighted stocks, against 834 for IWM alone and 19 for SOXX 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 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.