IWO vs VBR: Holdings Overlap
IWOiShares Russell 2000 Growth ETF
iShares · 1101 holdings · $14.8B · as of 2026-03-31
VBRVanguard Small-cap Value Index Fund
Vanguard · 838 holdings · $38.3B · as of 2026-03-31
How similar are IWO and VBR?
iShares Russell 2000 Growth ETF (IWO, by iShares) holds 1101 positions; Vanguard Small-cap Value Index Fund (VBR, by Vanguard) holds 838. They have 193 holdings in common, and by portfolio weight the two funds are 9.7% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 9.7%Sum of the smaller weight of each shared holding
- Shared Holdings
- 193IWO holds 1101 · VBR holds 838
- Weight in Shared Holdings
- IWO 23%·VBR 12%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 IWO
908 of 1101 positions (77.1% of the fund) are not held by VBR. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWO | VBR |
|---|---|---|
| Industrials | 23.7% | 18.8% |
| Health Care | 23.1% | 8.4% |
| Information Technology | 19.0% | 8.2% |
| Financials | 8.6% | 18.7% |
| Consumer Discretionary | 7.3% | 10.9% |
| Other Sectors | 14.1% | 34.3% |
| Unclassified | 4.0% | 0.5% |
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 (4% of IWO, 1% of VBR).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWO | +1.2% | +21.0% | +34.7% | +17.5% | +5.9% | +11.0% | 0.42% |
| VBR | +3.1% | +19.2% | +28.7% | +15.4% | +10.0% | +10.8% | 1.73% |
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 IWO vs VBR →
Shared Holdings(193)
The top 10 shared positions account for 18% of the overlap, led by MOG-A, WTS and VIAV.
 MOG-AMoog, Inc., Class A | 0.55% | 0.20% | 0.20% |
|---|---|---|---|
 WTSWatts Water Technologies, Inc., Class A | 0.53% | 0.19% | 0.19% |
 VIAVViavi Solutions Inc COM | 0.51% | 0.19% | 0.19% |
 PRIMPrimoris Services Corp. COM | 0.49% | 0.18% | 0.18% |
 ZWSZurn Elkay Water Solutions Corporation COM | 0.45% | 0.17% | 0.17% |
 FCFSFirstcash Holdings Inc COM | 0.50% | 0.17% | 0.17% |
 SANMSanmina Corporation | 0.21% | 0.16% | 0.16% |
 TEXTerex Corporation COM | 0.19% | 0.16% | 0.16% |
 COGTCogent Biosciences Inc. COM | 0.35% | 0.14% | 0.14% |
 AROCArchrock Inc COM | 0.40% | 0.14% | 0.14% |
| Nuvalent, Inc., Class A | 0.34% | 0.14% | 0.14% |
 PLXSPlexus Corp COM | 0.34% | 0.13% | 0.13% |
 COMPCompass, Inc., Class A | 0.24% | 0.13% | 0.13% |
 PIPRPiper Sandler Companies COM NEW | 0.36% | 0.13% | 0.13% |
 JOBYJoby Aviation Inc. COM USD0.0001 | 0.32% | 0.12% | 0.12% |
 CGONCG Oncology Inc. COM | 0.27% | 0.11% | 0.11% |
 ATMUAtmus Filtration Technologies Inc. COM | 0.28% | 0.11% | 0.11% |
 SIGISelective Insurance Group Inc. COM | 0.27% | 0.11% | 0.11% |
 BDCBelden Inc. COM | 0.30% | 0.11% | 0.11% |
 RGTIRigetti Computing Inc COMMON STOCK | 0.31% | 0.11% | 0.11% |
 MIRMirion Technologies, Inc., Class A | 0.30% | 0.10% | 0.10% |
 BCOBrinks Company COM | 0.29% | 0.10% | 0.10% |
 ANFAbercrombie & Fitch Co., Class A | 0.28% | 0.10% | 0.10% |
 OSISOSI System Inc. COM | 0.28% | 0.10% | 0.10% |
 RUSHARush Enterprises, Inc., Class A | 0.15% | 0.10% | 0.10% |
Frequently Asked Questions
How much do IWO and VBR overlap?
IWO and VBR overlap by 9.7% of portfolio weight. They share 193 holdings (IWO holds 1101 positions and VBR holds 838), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWO and VBR?
The two portfolios are 9.7% 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 IWO and VBR?
The largest positions held by both funds are MOG-A, WTS, VIAV, PRIM and ZWS. Together the top 10 shared positions account for 18% of the total overlap.
What does IWO own that VBR doesn't?
908 positions (77.1% of IWO) are unique to IWO, led by BE, FN and CRDO. In the other direction, 645 positions (87.8% of VBR) are unique to VBR.