IWO vs VTI: Holdings Overlap
IWOiShares Russell 2000 Growth ETF
iShares · 1101 holdings · $14.8B · as of 2026-03-31
VTIVanguard Total Stock Market Index Fund
Vanguard · 3505 holdings · $696.4B · as of 2026-03-31
How similar are IWO and VTI?
iShares Russell 2000 Growth ETF (IWO, by iShares) holds 1101 positions; Vanguard Total Stock Market Index Fund (VTI, by Vanguard) holds 3505. They have 1027 holdings in common, and by portfolio weight the two funds are 3.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 3.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1027IWO holds 1101 · VTI holds 3505
- Weight in Shared Holdings
- IWO 97%·VTI 3%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
74 of 1101 positions (2.9% of the fund) are not held by VTI. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWO | VTI |
|---|---|---|
| Information Technology | 19.0% | 30.5% |
| Industrials | 23.7% | 10.4% |
| Health Care | 23.1% | 10.0% |
| Financials | 8.6% | 12.7% |
| Consumer Discretionary | 7.3% | 9.8% |
| Other Sectors | 14.1% | 26.0% |
| Unclassified | 4.0% | 0.3% |
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, 0% of VTI).
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% |
| VTI | +3.3% | +14.6% | +24.2% | +20.9% | +12.3% | +14.9% | 1.02% |
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 VTI →
Shared Holdings(1027)
The top 10 shared positions account for 9% of the overlap, led by BE, FN and NXT.
 BEBloom Energy Corporation COM CL A | 1.99% | 0.06% | 0.06% |
|---|---|---|---|
 FNFabrinet COM USD0.01 | 1.26% | 0.03% | 0.03% |
 NXTNextpower Inc. CLASS A COM | 0.94% | 0.03% | 0.03% |
 CRDOCredo Technology Group Holding Ltd ORDINARY SHARES | 1.02% | 0.02% | 0.02% |
 KTOSKratos Defense & Security Solutions, Inc. COM NEW | 0.86% | 0.02% | 0.02% |
 BBIOBridgebio Pharma Inc COM | 0.79% | 0.02% | 0.02% |
 AEISAdvanced Energy Industries, Inc. COM | 0.82% | 0.02% | 0.02% |
 HLHecla Mining Company COM | 0.19% | 0.02% | 0.02% |
 STRLSterling Infrastructure Inc COM | 0.81% | 0.02% | 0.02% |
 ENSGEnsign Group, Inc. (The) | 0.76% | 0.02% | 0.02% |
 GHGuardant Health Inc COM | 0.77% | 0.02% | 0.02% |
 MODModine Manufacturing Co. COM | 0.76% | 0.02% | 0.02% |
 CDECoeur Mining Inc COM NEW | 0.64% | 0.02% | 0.02% |
 SPXCSPX Technologies, Inc. COM | 0.65% | 0.02% | 0.02% |
 DYDycom Industries, Inc. COM | 0.66% | 0.02% | 0.02% |
 MDGLMadrigal Pharmaceuticals Inc COM | 0.60% | 0.02% | 0.02% |
 IONQIonq Inc COM | 0.67% | 0.02% | 0.02% |
 RMBSRambus Inc. COM | 0.62% | 0.01% | 0.01% |
| Chart Industries Inc COM | 0.63% | 0.01% | 0.01% |
 PRAXPraxis Precision Medicines Inc COM NEW | 0.04% | 0.01% | 0.01% |
 AHRAmerican Healthcare REIT Inc. COM SHS | 0.20% | 0.01% | 0.01% |
 ARWRArrowhead Pharmaceuticals Inc COM | 0.57% | 0.01% | 0.01% |
 MOG-AMoog, Inc., Class A | 0.55% | 0.01% | 0.01% |
 CTRECaretrust Reit Inc COM | 0.05% | 0.01% | 0.01% |
 CYTKCytokinetics Incorporated | 0.06% | 0.01% | 0.01% |
Showing the top 250 of 1027 shared holdings by overlap weight.
Frequently Asked Questions
How much do IWO and VTI overlap?
IWO and VTI overlap by 3.0% of portfolio weight. They share 1027 holdings (IWO holds 1101 positions and VTI holds 3505), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWO and VTI?
The two portfolios are 3.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IWO and VTI?
The largest positions held by both funds are BE, FN, NXT, CRDO and KTOS. Together the top 10 shared positions account for 9% of the total overlap.
What does IWO own that VTI doesn't?
74 positions (2.9% of IWO) are unique to IWO, led by XENE, STNE and PPTA. In the other direction, 2478 positions (96.6% of VTI) are unique to VTI.