IOO vs QQQ: Holdings Overlap
iShares · 110 holdings · $9.3B · as of 2026-03-31
QQQInvesco QQQ Trust, Series 1
Invesco · 101 holdings · $479.2B · as of 2026-03-31
How similar are IOO and QQQ?
iShares Global 100 ETF (IOO, by iShares) holds 110 positions; Invesco QQQ Trust, Series 1 (QQQ, by Invesco) holds 101. They have 15 holdings in common, and by portfolio weight the two funds are 41.8% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 41.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 15IOO holds 110 · QQQ holds 101
- Weight in Shared Holdings
- IOO 55%·QQQ 48%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
95 of 110 positions (44.8% of the fund) are not held by QQQ. Showing the top 30 by weight.
Sector Breakdown
| Sector | IOO | QQQ |
|---|---|---|
| Information Technology | 42.3% | 49.7% |
| Communication Services | 10.1% | 16.0% |
| Consumer Discretionary | 8.5% | 12.6% |
| Financials | 10.0% | 0.2% |
| Health Care | 9.8% | 5.1% |
| Other Sectors | 19.0% | 16.3% |
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.
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% |
| QQQ | +1.9% | +18.0% | +27.6% | +25.2% | +15.2% | +20.8% | 0.42% |
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 QQQ →
Shared Holdings(15)
The top 10 shared positions account for 94% of the overlap, led by NVDA, AAPL and MSFT.
 NVDANVIDIA Corp. COM | 12.13% | 8.68% | 8.68% |
|---|---|---|---|
 AAPLApple Inc. COM | 10.66% | 7.63% | 7.63% |
 MSFTMicrosoft Corp. COM | 7.87% | 5.63% | 5.63% |
 AMZNAmazon.com, Inc. COM | 5.82% | 4.58% | 4.58% |
 GOOGLAlphabet Inc. CAP STK CL A | 4.79% | 3.43% | 3.43% |
 GOOGAlphabet Inc. CAP STK CL C | 3.84% | 3.20% | 3.20% |
 AVGOBroadcom Inc COM | 4.20% | 3.01% | 3.01% |
 WMTWalmart Inc COM | 1.56% | 3.43% | 1.56% |
 CSCOCisco Systems, Inc. COM | 0.87% | 1.73% | 0.87% |
 LINLinde PLC COM EUR0.001 | 0.66% | 1.30% | 0.66% |
 PEPPepsico Inc COM | 0.61% | 1.20% | 0.61% |
 INTCIntel Corporation COM | 0.59% | 1.25% | 0.59% |
 TXNTexas Instruments Inc. COM | 0.50% | 1.00% | 0.50% |
 HONHoneywell International Inc. COM | 0.41% | 0.81% | 0.41% |
 QCOMQUALCOMM Inc. COM | 0.40% | 0.78% | 0.40% |
Frequently Asked Questions
How much do IOO and QQQ overlap?
IOO and QQQ overlap by 41.8% of portfolio weight. They share 15 holdings (IOO holds 110 positions and QQQ holds 101), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IOO and QQQ?
The two portfolios are 41.8% 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 QQQ?
The largest positions held by both funds are NVDA, AAPL, MSFT, AMZN and GOOGL. Together the top 10 shared positions account for 94% of the total overlap.
What does IOO own that QQQ doesn't?
95 positions (44.8% of IOO) are unique to IOO, led by JPM, LLY and XOM. In the other direction, 86 positions (52.2% of QQQ) are unique to QQQ.