IWM vs RSP: how much do they overlap?
iShares Russell 2000 ETF (IWM) · Invesco S&P 500 Equal Weight ETF (RSP)
overlap by weight · 1 shared holdings
IWM: 1934 holdings (as of 2026-03-31) · RSP: 503 holdings (as of 2026-04-30)
Note: the two funds' latest official filings have different dates, which can understate overlap slightly for funds tracking similar indexes.
Low overlap
What this means
IWM and RSP hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold — it answers "how much of my money is in the same stocks either way?" See methodology.
Top shared holdings
| Company | Ticker | in IWM | in RSP |
|---|---|---|---|
| EchoStar Corp. | ECHO | 0.54% | 0.21% |
FAQ
How much do IWM and RSP overlap?
IWM and RSP have a 0.2% overlap by weight, sharing 1 holdings (out of 1934 in IWM and 503 in RSP), based on official issuer holdings as of 2026-03-31.
What does 0.2% overlap mean?
IWM and RSP hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do IWM and RSP both hold?
The largest shared positions are EchoStar Corp.. The full list of top shared holdings with weights in each fund is shown on this page.