ITOT vs IWM: how much do they overlap?
iShares Core S&P Total U.S. Stock Market ETF (ITOT) · iShares Russell 2000 ETF (IWM)
overlap by weight · 1403 shared holdings
ITOT: 2470 holdings (as of 2026-03-31) · IWM: 1934 holdings (as of 2026-03-31)
Low overlap
What this means
ITOT and IWM 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 ITOT | in IWM |
|---|---|---|---|
| Bloom Energy Corp. | BE | 0.06% | 1.01% |
| Fabrinet | FN | 0.03% | 0.64% |
| Nextpower, Inc. | NXT | 0.03% | 0.6% |
| Coeur Mining, Inc. | CDE | 0.03% | 0.65% |
| EchoStar Corp. | ECHO | 0.02% | 0.54% |
| Credo Technology Group Holding Ltd. | CRDO | 0.02% | 0.52% |
| Kratos Defense & Security Solutions, Inc. | KTOS | 0.02% | 0.43% |
| Bridgebio Pharma, Inc. | BBIO | 0.02% | 0.4% |
| Hecla Mining Co. | HL | 0.02% | 0.4% |
| Sterling Infrastructure, Inc. | STRL | 0.02% | 0.41% |
FAQ
How much do ITOT and IWM overlap?
ITOT and IWM have a 4.6% overlap by weight, sharing 1403 holdings (out of 2470 in ITOT and 1934 in IWM), based on official issuer holdings as of 2026-03-31.
What does 4.6% overlap mean?
ITOT and IWM hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do ITOT and IWM both hold?
The largest shared positions are Bloom Energy Corp., Fabrinet, Nextpower, Inc., Coeur Mining, Inc., EchoStar Corp.. The full list of top shared holdings with weights in each fund is shown on this page.