IOO vs IWV: Differences, Returns & Fees
IOO and IWV hold 45% of their weight in the same names, and IOO returned +21.1% over the year. Net assets on Oct 9, 2026: $9.4bn for iShares Global 100 ETF and $20.6bn for iShares Russell 3000 ETF.
IWV costs 0.20 points a year less; their one-year returns differ by 4.4 points; IWV is 2.2 times larger.
| IOO | IWV | |
|---|---|---|
| Expense ratio | 0.40% | 0.20% |
| Net assets | $9.4bn | $20.6bn |
| Total return, 1 year | +21.1% | +16.7% |
| What it tracks | S&P Global 100 | Russell 3000 Index |
| Holdings in common | 45% | |
| Top ten holdings, share of the fund | 59.9% | 34.7% |
Holdings in common uses holdings dated Oct 9, 2026.
What they hold in common
By the books each fund has filed, IOO and IWV hold 45% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Oct 9, 2026.
half
45% in common
On the same fields
IOO and IWV on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.
About IOO
IOO tracks an index. Over the year to Oct 9, 2026 it returned +21.1% with distributions reinvested. The prospectus expense ratio is 0.40% a year. By its holdings published by its issuer for Oct 9, 2026, 79% of the fund by weight is stocks the S&P 500 also holds, across 104 positions, with the top ten at 59.9%.
About IWV
IWV tracks an index. Over the year to Oct 9, 2026 it returned +16.7% with distributions reinvested, against +16.8% for its benchmark, the Russell 3000 Index. The prospectus expense ratio is 0.20% a year. By its holdings published by its issuer for Oct 9, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 2,600 positions, with the top ten at 34.7%.
Questions people ask
- Which returned more over the last year, IOO or IWV?
- In the year to Oct 9, 2026, with distributions reinvested, IOO returned +21.1% and IWV +16.7%.
- Which is cheaper, IOO or IWV?
- IWV is cheaper, by 0.20 percentage points a year. That is about $20 on $10,000 held for a year. Fees come from each fund's prospectus.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, IOO against IWV, data as of Oct 9, 2026. https://etfiq.com/compare/any/ioo-vs-iwv
ETFIQ. (Oct 9, 2026). IOO against IWV. Retrieved from https://etfiq.com/compare/any/ioo-vs-iwv
[IOO against IWV (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/any/ioo-vs-iwv)
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