IWO vs VTWO: Holdings Overlap
IWOiShares Russell 2000 Growth ETF
iShares · 1101 holdings · $14.8B · as of 2026-03-31
VTWOVanguard Russell 2000 Index Fund
Vanguard · 1952 holdings · $17.4B · as of 2026-05-31
Holdings snapshots are 61 days apart (IWO: 2026-03-31, VTWO: 2026-05-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are IWO and VTWO?
iShares Russell 2000 Growth ETF (IWO, by iShares) holds 1101 positions; Vanguard Russell 2000 Index Fund (VTWO, by Vanguard) holds 1952. They have 1076 holdings in common, and by portfolio weight the two funds are 57.6% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 57.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1076IWO holds 1101 · VTWO holds 1952
- Weight in Shared Holdings
- IWO 99%·VTWO 67%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
25 of 1101 positions (1.1% of the fund) are not held by VTWO.
Sector Breakdown
| Sector | IWO | VTWO |
|---|---|---|
| Industrials | 23.7% | 19.4% |
| Health Care | 23.1% | 15.5% |
| Information Technology | 19.0% | 17.8% |
| Financials | 8.6% | 14.3% |
| Consumer Discretionary | 7.3% | 7.3% |
| Other Sectors | 14.1% | 20.8% |
| Unclassified | 4.0% | 4.8% |
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, 5% of VTWO).
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% |
| VTWO | +1.8% | +23.1% | +38.8% | +17.3% | +7.7% | +11.0% | 1.07% |
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 VTWO →
Shared Holdings(1076)
The top 10 shared positions account for 13% of the overlap, led by BE, CRDO and STRL.
 BEBloom Energy Corporation COM CL A | 1.99% | 1.83% | 1.83% |
|---|---|---|---|
 CRDOCredo Technology Group Holding Ltd ORDINARY SHARES | 1.02% | 1.12% | 1.02% |
 STRLSterling Infrastructure Inc COM | 0.81% | 0.75% | 0.75% |
 FNFabrinet COM USD0.01 | 1.26% | 0.69% | 0.69% |
 NXTNextpower Inc. CLASS A COM | 0.94% | 0.67% | 0.67% |
 IONQIonq Inc COM | 0.67% | 0.63% | 0.63% |
 CDECoeur Mining Inc COM NEW | 0.64% | 0.58% | 0.58% |
 GHGuardant Health Inc COM | 0.77% | 0.47% | 0.47% |
 SITMSitime Corporation COM | 0.52% | 0.47% | 0.47% |
 RMBSRambus Inc. COM | 0.62% | 0.46% | 0.46% |
 DYDycom Industries, Inc. COM | 0.66% | 0.44% | 0.44% |
 MODModine Manufacturing Co. COM | 0.76% | 0.43% | 0.43% |
 SMTCSemtech Corporation COM | 0.48% | 0.42% | 0.42% |
 PLPlanet Labs PBC, Class A | 0.51% | 0.41% | 0.41% |
 DOCNDigitalOcean Holdings Inc COM | 0.44% | 0.35% | 0.35% |
 KTOSKratos Defense & Security Solutions, Inc. COM NEW | 0.86% | 0.34% | 0.34% |
 AEISAdvanced Energy Industries, Inc. COM | 0.82% | 0.33% | 0.33% |
 VIAVViavi Solutions Inc COM | 0.51% | 0.33% | 0.33% |
 QBTSD-Wave Quantum Inc. COM | 0.35% | 0.32% | 0.32% |
 ARWRArrowhead Pharmaceuticals Inc COM | 0.57% | 0.31% | 0.31% |
 BBIOBridgebio Pharma Inc COM | 0.79% | 0.31% | 0.31% |
 LUMNLumen Technologies Inc COM | 0.39% | 0.31% | 0.31% |
 SPXCSPX Technologies, Inc. COM | 0.65% | 0.31% | 0.31% |
 AAOIApplied Optoelectronics Inc COM | 0.30% | 0.31% | 0.30% |
 MOG-AMoog, Inc., Class A | 0.55% | 0.30% | 0.30% |
Showing the top 250 of 1076 shared holdings by overlap weight.
Frequently Asked Questions
How much do IWO and VTWO overlap?
IWO and VTWO overlap by 57.6% of portfolio weight. They share 1076 holdings (IWO holds 1101 positions and VTWO holds 1952), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWO and VTWO?
The two portfolios are 57.6% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of IWO and VTWO?
The largest positions held by both funds are BE, CRDO, STRL, FN and NXT. Together the top 10 shared positions account for 13% of the total overlap.
What does IWO own that VTWO doesn't?
25 positions (1.1% of IWO) are unique to IWO, led by ACLX, AM6 and CSG Systems International, Inc.. In the other direction, 876 positions (32.8% of VTWO) are unique to VTWO.