IOO vs VT: Holdings Overlap
iShares · 110 holdings · $9.3B · as of 2026-03-31
VTVanguard Total World Stock Index Fund
Vanguard · 10033 holdings · $80.9B · as of 2026-04-30
Holdings snapshots are 30 days apart (IOO: 2026-03-31, VT: 2026-04-30). 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 IOO and VT?
iShares Global 100 ETF (IOO, by iShares) holds 110 positions; Vanguard Total World Stock Index Fund (VT, by Vanguard) holds 10033. They have 102 holdings in common, and by portfolio weight the two funds are 34.2% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 34.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 102IOO holds 110 · VT holds 10033
- Weight in Shared Holdings
- IOO 100%·VT 34%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 IOO
8 of 110 positions (0.1% of the fund) are not held by VT.
- GREAT BRITISH POUND0.02%
- AUSTRALIAN DOLLAR0.02%
- JAPANESE YEN0.01%
- SWISS FRANC0.01%
- Euro0.00%
- HONG KONG DOLLAR0.00%
Only in VT
9931 of 10033 positions (65.1% of the fund) are not held by IOO. Showing the top 30 by weight.
Sector Breakdown
| Sector | IOO | VT |
|---|---|---|
| Information Technology | 42.3% | 25.9% |
| Financials | 10.0% | 14.5% |
| Industrials | 5.0% | 10.2% |
| Communication Services | 10.1% | 7.8% |
| Health Care | 9.8% | 7.4% |
| Other Sectors | 22.5% | 24.4% |
| Unclassified | 0.0% | 9.1% |
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 (0% of IOO, 9% of VT).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IOO | +5.6% | +16.0% | +31.2% | +25.4% | +16.4% | +16.6% | 0.80% |
| VT | +3.2% | +15.0% | +25.3% | +20.1% | +11.1% | +12.6% | 1.54% |
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 IOO vs VT →
Shared Holdings(102)
The top 10 shared positions account for 59% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 12.13% | 4.19% | 4.19% |
|---|---|---|---|
 AAPLApple Inc. COM | 10.66% | 3.50% | 3.50% |
 MSFTMicrosoft Corp. COM | 7.87% | 2.71% | 2.71% |
 AMZNAmazon.com, Inc. COM | 5.82% | 2.28% | 2.28% |
 GOOGLAlphabet Inc. CAP STK CL A | 4.79% | 2.03% | 2.03% |
 AVGOBroadcom Inc COM | 4.20% | 1.73% | 1.73% |
 GOOGAlphabet Inc. CAP STK CL C | 3.84% | 1.60% | 1.60% |
 JPMJPMorgan Chase & Co. COM | 2.27% | 0.71% | 0.71% |
 LLYEli Lilly & Co. COM | 2.09% | 0.67% | 0.67% |
 005930Samsung Electronics Co Ltd | 1.66% | 0.64% | 0.64% |
 XOMExxon Mobil Corp. COM | 2.03% | 0.58% | 0.58% |
 WMTWalmart Inc COM | 1.56% | 0.51% | 0.51% |
 ASMLASML Holding NV | 1.48% | 0.50% | 0.50% |
 JNJJohnson & Johnson COM | 1.69% | 0.49% | 0.49% |
 INTCIntel Corporation COM | 0.59% | 0.37% | 0.37% |
 CATCaterpillar Inc COM | 0.95% | 0.37% | 0.37% |
 MAMasterCard Incorporated CL A | 1.16% | 0.36% | 0.36% |
 700Tencent Holdings Ltd. | 1.10% | 0.34% | 0.34% |
 CSCOCisco Systems, Inc. COM | 0.87% | 0.33% | 0.33% |
 CVXChevron Corp. COM | 1.11% | 0.32% | 0.32% |
 PGThe Procter & Gamble Co. COM | 0.96% | 0.31% | 0.31% |
 HSBAHSBC Holdings PLC | 0.81% | 0.28% | 0.28% |
 KOCoca-Cola Co (The) COM | 0.84% | 0.27% | 0.27% |
 GEGeneral Electric Co. | 0.85% | 0.27% | 0.27% |
 AZNAstraZeneca PLC ORD USD0.25 | 0.87% | 0.25% | 0.25% |
Frequently Asked Questions
How much do IOO and VT overlap?
IOO and VT overlap by 34.2% of portfolio weight. They share 102 holdings (IOO holds 110 positions and VT holds 10033), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IOO and VT?
The two portfolios are 34.2% 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 IOO and VT?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 59% of the total overlap.
What does IOO own that VT doesn't?
8 positions (0.1% of IOO) are unique to IOO, led by GREAT BRITISH POUND, AUSTRALIAN DOLLAR and JAPANESE YEN. In the other direction, 9931 positions (65.1% of VT) are unique to VT.