etf overlap · light overlap
RSP vs IWF overlap
20% of RSP and IWF is the same money, spread over 180 companies both funds hold.
Holdings as of October 14, 2026 · source: Invesco (RSP), iShares (IWF) · How we measured all 1,035 pairs
- same money
- same companies, extra weight
- only in this fund
The companies you would own twice
What only one of them gives you
Where each fund puts its money
RSP and IWF: what people ask
How much do RSP and IWF overlap?
20% by weight, as of October 14, 2026: light overlap. 180 companies appear in both funds; they make up 36% of RSP and 94% of IWF.
Which stocks do RSP and IWF both hold?
The largest shared positions are CRWD, DDOG, ISRG, PLTR and FTNT. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both RSP and IWF?
Out of every $100 split evenly between them, about $20 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 325 names only in RSP, 191 only in IWF. Half in each behaves like 73 equally weighted stocks, against 498 for RSP alone and 20 for IWF alone. Whether that duplication is a problem depends on the mix you want; 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 Invesco 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.