URTH vs IOO: Holdings Overlap
iShares · 1322 holdings · $8.3B · as of 2026-05-31
iShares · 110 holdings · $9.3B · as of 2026-03-31
Holdings snapshots are 61 days apart (URTH: 2026-05-31, IOO: 2026-03-31). 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 URTH and IOO?
iShares MSCI World ETF (URTH, by iShares) holds 1322 positions; iShares Global 100 ETF (IOO, by iShares) holds 110. They have 107 holdings in common, and by portfolio weight the two funds are 43.3% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 43.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 107URTH holds 1322 · IOO holds 110
- Weight in Shared Holdings
- URTH 43%·IOO 97%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 URTH
1215 of 1322 positions (56.3% of the fund) are not held by IOO. Showing the top 30 by weight.
Sector Breakdown
| Sector | URTH | IOO |
|---|---|---|
| Information Technology | 30.3% | 42.3% |
| Financials | 15.0% | 10.0% |
| Industrials | 10.8% | 5.0% |
| Communication Services | 8.8% | 10.1% |
| Health Care | 8.3% | 9.8% |
| Other Sectors | 24.9% | 22.5% |
| Unclassified | 1.6% | 0.0% |
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 (2% of URTH, 0% of IOO).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| URTH | +3.6% | +14.1% | +23.9% | +20.4% | +11.9% | +13.3% | 1.35% |
| IOO | +5.6% | +16.0% | +31.2% | +25.4% | +16.4% | +16.6% | 0.80% |
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 URTH vs IOO →
Shared Holdings(107)
The top 10 shared positions account for 60% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 5.62% | 12.13% | 5.62% |
|---|---|---|---|
 AAPLApple Inc. COM | 5.03% | 10.66% | 5.03% |
 MSFTMicrosoft Corp. COM | 3.48% | 7.87% | 3.48% |
 AMZNAmazon.com, Inc. COM | 2.85% | 5.82% | 2.85% |
 GOOGLAlphabet Inc. CAP STK CL A | 2.43% | 4.79% | 2.43% |
 AVGOBroadcom Inc COM | 2.21% | 4.20% | 2.21% |
 GOOGAlphabet Inc. CAP STK CL C | 2.01% | 3.84% | 2.01% |
 LLYEli Lilly & Co. COM | 0.97% | 2.09% | 0.97% |
 JPMJPMorgan Chase & Co. COM | 0.89% | 2.27% | 0.89% |
 ASMLASML Holding NV | 0.69% | 1.48% | 0.69% |
 XOMExxon Mobil Corp. COM | 0.67% | 2.03% | 0.67% |
 JNJJohnson & Johnson COM | 0.59% | 1.69% | 0.59% |
 INTCIntel Corporation COM | 0.57% | 0.59% | 0.57% |
 WMTWalmart Inc COM | 0.56% | 1.56% | 0.56% |
 CSCOCisco Systems, Inc. COM | 0.52% | 0.87% | 0.52% |
 MAMasterCard Incorporated CL A | 0.46% | 1.16% | 0.46% |
 CATCaterpillar Inc COM | 0.45% | 0.95% | 0.45% |
 CVXChevron Corp. COM | 0.38% | 1.11% | 0.38% |
 GEGeneral Electric Co. | 0.37% | 0.85% | 0.37% |
 PGThe Procter & Gamble Co. COM | 0.37% | 0.96% | 0.37% |
 KOCoca-Cola Co (The) COM | 0.35% | 0.84% | 0.35% |
 HSBAHSBC Holdings PLC | 0.35% | 0.81% | 0.35% |
 GSGoldman Sachs Group, Inc. (The) | 0.34% | 0.73% | 0.34% |
 ROPRoche Holding AG CHF0.001 | 0.32% | 0.80% | 0.32% |
 MRKMerck & Co., Inc COM | 0.32% | 0.86% | 0.32% |
Frequently Asked Questions
How much do URTH and IOO overlap?
URTH and IOO overlap by 43.3% of portfolio weight. They share 107 holdings (URTH holds 1322 positions and IOO holds 110), based on each fund's latest SEC-reported holdings.
Is it redundant to own both URTH and IOO?
The two portfolios are 43.3% 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 URTH and IOO?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 60% of the total overlap.
What does URTH own that IOO doesn't?
1215 positions (56.3% of URTH) are unique to URTH, led by META, TSLA and MU. In the other direction, 3 positions (2.8% of IOO) are unique to IOO.