IWB vs VONE: Holdings Overlap
iShares · 1005 holdings · $49.9B · as of 2026-03-31
VONEVanguard Russell 1000 Index Fund
Vanguard · 1003 holdings · $8.6B · as of 2026-05-31
Holdings snapshots are 61 days apart (IWB: 2026-03-31, VONE: 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 IWB and VONE?
iShares Russell 1000 ETF (IWB, by iShares) holds 1005 positions; Vanguard Russell 1000 Index Fund (VONE, by Vanguard) holds 1003. They have 998 holdings in common, and by portfolio weight the two funds are 91.8% identical. In practical terms the pair is essentially interchangeable, so holding both adds little diversification.
- Overlap by Weight
- 91.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 998IWB holds 1005 · VONE holds 1003
- Weight in Shared Holdings
- IWB 100%·VONE 100%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 IWB
7 of 1005 positions (0.1% of the fund) are not held by VONE.
Sector Breakdown
| Sector | IWB | VONE |
|---|---|---|
| Information Technology | 30.9% | 36.4% |
| Financials | 12.9% | 11.5% |
| Communication Services | 10.2% | 10.4% |
| Consumer Discretionary | 10.0% | 9.9% |
| Industrials | 9.9% | 9.2% |
| Other Sectors | 26.0% | 22.4% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWB | +3.4% | +13.9% | +23.1% | +20.9% | +12.6% | +15.0% | 0.89% |
| VONE | +3.4% | +13.9% | +23.3% | +21.0% | +12.7% | +15.1% | 0.99% |
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 IWB vs VONE →
Shared Holdings(998)
The top 10 shared positions account for 36% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 6.81% | 7.15% | 6.81% |
|---|---|---|---|
 AAPLApple Inc. COM | 6.10% | 6.50% | 6.10% |
 MSFTMicrosoft Corp. COM | 4.58% | 4.83% | 4.58% |
 AMZNAmazon.com, Inc. COM | 3.33% | 3.76% | 3.33% |
 GOOGLAlphabet Inc. CAP STK CL A | 2.79% | 3.20% | 2.79% |
 AVGOBroadcom Inc COM | 2.39% | 2.98% | 2.39% |
 GOOGAlphabet Inc. CAP STK CL C | 2.27% | 2.57% | 2.27% |
 METAMeta Platforms, Inc., Class A | 2.08% | 2.00% | 2.00% |
 TSLATesla Inc COM | 1.75% | 1.78% | 1.75% |
 BRK-BBerkshire Hathaway, Inc., Class B | 1.47% | 1.27% | 1.27% |
 LLYEli Lilly & Co. COM | 1.23% | 1.28% | 1.23% |
 JPMJPMorgan Chase & Co. COM | 1.33% | 1.10% | 1.10% |
 XOMExxon Mobil Corp. COM | 1.20% | 0.89% | 0.89% |
 VVisa, Inc., Class A | 0.85% | 0.79% | 0.79% |
 JNJJohnson & Johnson COM | 0.98% | 0.78% | 0.78% |
 WMTWalmart Inc COM | 0.90% | 0.73% | 0.73% |
 MUMicron Technology Inc. COM | 0.63% | 1.57% | 0.63% |
 COSTCostco Wholesale Corporation COM | 0.74% | 0.61% | 0.61% |
 MAMasterCard Incorporated CL A | 0.67% | 0.58% | 0.58% |
 ABBVAbbVie Inc. COM | 0.64% | 0.56% | 0.56% |
 CATCaterpillar Inc COM | 0.55% | 0.59% | 0.55% |
 AMDAdvanced Micro Devices Inc. COM | 0.55% | 1.20% | 0.55% |
 NFLXNetflix, Inc. COM | 0.68% | 0.53% | 0.53% |
 CSCOCisco Systems, Inc. COM | 0.52% | 0.69% | 0.52% |
 PLTRPalantir Technologies, Inc., Class A | 0.53% | 0.49% | 0.49% |
Showing the top 250 of 998 shared holdings by overlap weight.
Frequently Asked Questions
How much do IWB and VONE overlap?
IWB and VONE overlap by 91.8% of portfolio weight. They share 998 holdings (IWB holds 1005 positions and VONE holds 1003), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWB and VONE?
The two portfolios are 91.8% identical by weight. Owning both is largely redundant: they are close to the same portfolio, so a second position mostly duplicates the first.
What are the biggest shared holdings of IWB and VONE?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 36% of the total overlap.
What does IWB own that VONE doesn't?
7 positions (0.1% of IWB) are unique to IWB, led by CCL, CTRA and HOLX. In the other direction, 5 positions (0.1% of VONE) are unique to VONE.