IWM vs VB: Holdings Overlap
iShares · 1941 holdings · $82.2B · as of 2026-03-31
VBVanguard Small-cap Index Fund
Vanguard · 1312 holdings · $82.5B · as of 2026-03-31
How similar are IWM and VB?
iShares Russell 2000 ETF (IWM, by iShares) holds 1941 positions; Vanguard Small-cap Index Fund (VB, by Vanguard) holds 1312. They have 696 holdings in common, and by portfolio weight the two funds are 29.1% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 29.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 696IWM holds 1941 · VB holds 1312
- Weight in Shared Holdings
- IWM 73%·VB 29%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in IWM
1245 of 1941 positions (27.1% of the fund) are not held by VB. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWM | VB |
|---|---|---|
| Industrials | 17.9% | 21.2% |
| Health Care | 16.6% | 11.6% |
| Financials | 15.3% | 13.4% |
| Information Technology | 13.6% | 13.8% |
| Consumer Discretionary | 8.0% | 10.5% |
| Other Sectors | 22.7% | 28.5% |
| Unclassified | 5.5% | 0.7% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (5% of IWM, 1% of VB).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWM | +1.8% | +23.0% | +38.6% | +17.1% | +7.5% | +10.8% | 0.88% |
| VB | +2.5% | +19.5% | +29.1% | +15.9% | +8.1% | +11.3% | 1.18% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in IWM vs VB →
Shared Holdings(696)
The top 10 shared positions account for 7% of the overlap, led by FN, BE and NXT.
 FNFabrinet COM USD0.01 | 0.64% | 0.26% | 0.26% |
|---|---|---|---|
 BEBloom Energy Corporation COM CL A | 1.01% | 0.25% | 0.25% |
 NXTNextpower Inc. CLASS A COM | 0.60% | 0.24% | 0.24% |
 ECHOEchoStar Corp., Class A | 0.54% | 0.22% | 0.22% |
 CRDOCredo Technology Group Holding Ltd ORDINARY SHARES | 0.52% | 0.21% | 0.21% |
 KTOSKratos Defense & Security Solutions, Inc. COM NEW | 0.43% | 0.18% | 0.18% |
 BBIOBridgebio Pharma Inc COM | 0.40% | 0.18% | 0.18% |
 AEISAdvanced Energy Industries, Inc. COM | 0.41% | 0.17% | 0.17% |
 HLHecla Mining Company COM | 0.40% | 0.17% | 0.17% |
 STRLSterling Infrastructure Inc COM | 0.41% | 0.17% | 0.17% |
 ENSGEnsign Group, Inc. (The) | 0.38% | 0.16% | 0.16% |
 GHGuardant Health Inc COM | 0.39% | 0.16% | 0.16% |
 MODModine Manufacturing Co. COM | 0.39% | 0.16% | 0.16% |
 CDECoeur Mining Inc COM NEW | 0.65% | 0.15% | 0.15% |
 SPXCSPX Technologies, Inc. COM | 0.33% | 0.14% | 0.14% |
 DYDycom Industries, Inc. COM | 0.34% | 0.14% | 0.14% |
 MDGLMadrigal Pharmaceuticals Inc COM | 0.30% | 0.13% | 0.13% |
 TTMITTM Technologies Inc COM | 0.34% | 0.13% | 0.13% |
| Chart Industries Inc COM | 0.32% | 0.13% | 0.13% |
 RMBSRambus Inc. COM | 0.32% | 0.13% | 0.13% |
 AHRAmerican Healthcare REIT Inc. COM SHS | 0.29% | 0.12% | 0.12% |
 PCVXVaxcyte Inc COM | 0.25% | 0.12% | 0.12% |
 ARWRArrowhead Pharmaceuticals Inc COM | 0.29% | 0.12% | 0.12% |
 MOG-AMoog, Inc., Class A | 0.28% | 0.12% | 0.12% |
 IONQIonq Inc COM | 0.34% | 0.11% | 0.11% |
Showing the top 250 of 696 shared holdings by overlap weight.
Frequently Asked Questions
How much do IWM and VB overlap?
IWM and VB overlap by 29.1% of portfolio weight. They share 696 holdings (IWM holds 1941 positions and VB holds 1312), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWM and VB?
The two portfolios are 29.1% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of IWM and VB?
The largest positions held by both funds are FN, BE, NXT, ECHO and CRDO. Together the top 10 shared positions account for 7% of the total overlap.
What does IWM own that VB doesn't?
1245 positions (27.1% of IWM) are unique to IWM, led by SSRM, AAOI and GLNG. In the other direction, 616 positions (70.5% of VB) are unique to VB.