IWM vs VB: how much do they overlap?
iShares Russell 2000 ETF (IWM) · Vanguard Small-Cap ETF (VB)
overlap by weight · 694 shared holdings
IWM: 1934 holdings (as of 2026-03-31) · VB: 1312 holdings (as of 2026-03-31)
Low overlap
What this means
IWM and VB 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 VB |
|---|---|---|---|
| Fabrinet | FN | 0.64% | 0.26% |
| Bloom Energy Corp. | BE | 1.01% | 0.25% |
| Nextpower, Inc. | NXT | 0.6% | 0.24% |
| EchoStar Corp. | ECHO | 0.54% | 0.22% |
| Credo Technology Group Holding Ltd. | CRDO | 0.52% | 0.21% |
| Kratos Defense & Security Solutions, Inc. | KTOS | 0.43% | 0.18% |
| Bridgebio Pharma, Inc. | BBIO | 0.4% | 0.18% |
| Advanced Energy Industries, Inc. | AEIS | 0.41% | 0.17% |
| Hecla Mining Co. | HL | 0.4% | 0.17% |
| Sterling Infrastructure, Inc. | STRL | 0.41% | 0.17% |
FAQ
How much do IWM and VB overlap?
IWM and VB have a 29.1% overlap by weight, sharing 694 holdings (out of 1934 in IWM and 1312 in VB), based on official issuer holdings as of 2026-03-31.
What does 29.1% overlap mean?
IWM and VB hold mostly different stocks. Combining them genuinely spreads your exposure across different parts of the market.
Which stocks do IWM and VB both hold?
The largest shared positions are Fabrinet, Bloom Energy Corp., Nextpower, Inc., EchoStar Corp., Credo Technology Group Holding Ltd.. The full list of top shared holdings with weights in each fund is shown on this page.