IOO and IVV overlap by about 50%: there is a fair amount of double-up. IVV is cheaper (0.04% vs 0.40% a year), about $360 a year less on $100,000. IVV is the bigger fund ($14.9b vs $6.1b). IOO holds 100 of the world’s largest multinationals, mostly US. IVV holds the 500 largest US companies for a much lower fee.
📅 As at 30 September 2026: fees, size, flows and returns from the TMX Australia funds report; overlap from published holdings as at 30 October 2026.
IOO
iShares Global 100 ETFIOO invests in 100 of the world’s largest multinational companies, weighted by size.
IVV
iShares S&P 500 ETFIVV invests in the 500 large US companies in the S&P 500 index, weighted by size. It is one of the cheapest ETFs on the ASX.
IOO vs IVV side by side
Green marks the cheaper, bigger or better-performing fund on each line. Past returns are not a reliable guide to the future.
| IOO | IVV | |
|---|---|---|
| Issuer | iShares (BlackRock) | iShares (BlackRock) |
| Index | S&P Global 100 Index | S&P 500 Index |
| Fee (a year) | 0.40% | 0.04% |
| Size | $6.1b | $14.9b |
| Net money in, September | +$11m | −$84m |
| 1-year return | +15.6% | +10.1% |
| 5-year return | +113% | +88% |
| Listed | 2007 | 2007 |
| Top 10 holdings | 60% of fund | 41% of fund |
| Trend now | Base | Base |
How much do IOO and IVV overlap?
About 50% of their holdings are the same, by weight: medium overlap, so there is a fair amount of double-up.
The biggest companies they both own
| Company | IOO | IVV |
|---|---|---|
| Apple IncInformation Technology | 12.4% | 8.2% |
| NVIDIA CorpInformation Technology | 12.2% | 8.1% |
| Microsoft CorpInformation Technology | 9.5% | 6.3% |
| Alphabet (Google)Communication Services | 7.3% | 4.8% |
| Amazon.com IncConsumer Discretionary | 5.8% | 3.8% |
| Broadcom IncInformation Technology | 3.8% | 2.5% |
| Eli Lilly & CoHealth Care | 2.8% | 1.9% |
| JPMorgan Chase & CoFinancials | 2.2% | 1.5% |
| ExxonMobil Holdings CorpEnergy | 1.9% | 1.3% |
| Johnson & JohnsonHealth Care | 1.6% | 1.1% |
Only in IOO
- Samsung Electronics Co Ltd 1.9%
- Asml Holding NV 1.5%
- Roche Holding AG 0.9%
- Shell plc 0.8%
- Tencent Holdings Ltd 0.7%
Only in IVV
- Meta Platforms Inc 2.2%
- Tesla Inc 1.8%
- Berkshire Hathaway 1.7%
- Micron Technology Inc 1.6%
- Advanced Micro Devices Inc 1.3%
Sectors and countries
Sectors
Countries
Trend: base, uptrend or downtrend?
Past year of prices, shaded by trend stage. The dashed line is the 200-day exponential average. As at 4 November 2026. How base and trend works.
IOO or IVV: which suits who?
Where either fits depends on the rest of your portfolio: whether it’s your core or a satellite. See core and satellite investing and our full profiles of IOO and IVV.
See the exact overlap with everything you hold, plus the trend of each ETF, in our free calculator.
More comparisons
IOO vs IVV FAQs
Is IOO or IVV better?
Neither is better for everyone. IOO holds 100 of the world’s largest multinationals, mostly US. IVV holds the 500 largest US companies for a much lower fee. Choose IOO if you want a short list of global giants, including some outside the US. Choose IVV if you want the broad US market for a very low fee.
What is the difference between IOO and IVV?
IOO and IVV overlap by about 50%: there is a fair amount of double-up. IVV is cheaper (0.04% vs 0.40% a year), about $360 a year less on $100,000. IVV is the bigger fund ($14.9b vs $6.1b). IOO holds 100 of the world’s largest multinationals, mostly US. IVV holds the 500 largest US companies for a much lower fee.
Should I own both IOO and IVV?
You can, but check the double-up: about 50% of their holdings are the same. Use the overlap calculator to see how they fit with your other ETFs.
Which is cheaper, IOO or IVV?
IVV is cheaper (0.04% vs 0.40% a year), about $360 a year less on $100,000. Fees are taken from the fund’s returns, not charged separately.
Fees, size, flows and returns: TMX Australia Funds Report to 30 September 2026; returns are total returns and the 5-year figure is cumulative. Overlap, sectors and countries are based on each fund’s published holdings, scaled to the part of each fund we can see. Trend stages are a technical indicator based on 10, 20, 50 and 200-day exponential moving averages; they describe the past, not the future. General information only, not a recommendation to buy or sell IOO or IVV. Consider the PDS and TMD, and your own circumstances, before investing.