IOO invests in 100 of the world’s largest multinational companies, weighted by size. It charges 0.40% a year, has $6.1b invested and returned +15.6% over the past year. The most similar ETF is IHOO, which overlaps with it by about 98%.
📅 As at 30 September 2026: fee, size and 1-year return from the TMX Australia funds report; holdings and overlap from IOO’s published holdings as at 30 October 2026.
Is it a good time to buy IOO?
Nobody can time the market perfectly, but you can check the trend before you buy. Here’s where IOO stands right now.
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| Net flow, September | +$11m |
| Net flow, 2026 so far | +$208m |
| Average month in 2026 | +$23m |
Is the whole market risk on, caution or risk off this week? Members see it every Sunday, with the core ETF check-up.
🔒 See it free for 30 days →IOO is in a base. Prices moving sideways can be a time to build a position gradually and watch which way the trend breaks. There’s no rush either way.
General information only, not a recommendation to buy or sell IOO. Whether it suits you depends on your goals and the rest of your portfolio. Trend updated weekly; flows from the TMX Australia funds report (September 2026) and the Global X weekly market monitor. See every ETF’s trend in the ETF trend scanner, or read when to buy an ETF.
What is IOO?
Index: S&P Global 100 Index · Issuer: iShares (BlackRock) · Exchange: ASX
Top 10 holdings
The 10 largest companies make up 60% of IOO.
| # | Company | Weight | |
|---|---|---|---|
| 1 | Apple IncInformation Technology | 12.39% | |
| 2 | NVIDIA CorpInformation Technology | 12.19% | |
| 3 | Microsoft CorpInformation Technology | 9.54% | |
| 4 | Alphabet (Google)Communication Services | 7.30% | |
| 5 | Amazon.com IncConsumer Discretionary | 5.81% | |
| 6 | Broadcom IncInformation Technology | 3.82% | |
| 7 | Eli Lilly & CoHealth Care | 2.79% | |
| 8 | JPMorgan Chase & CoFinancials | 2.21% | |
| 9 | ExxonMobil Holdings CorpEnergy | 1.90% | |
| 10 | Samsung Electronics Co LtdInformation Technology | 1.89% |
Sector breakdown
ETFs most similar to IOO
How much each ETF’s holdings overlap with IOO, by weight. High overlap means owning both mostly doubles up.
| ETF | Overlap | |
|---|---|---|
| IHOOiShares Global 100 Aud Hedged ETF | 98% | Compare in calculator → |
| VTEKVanguard Global Technology Index ETF | 51% | Compare in calculator → |
| VTKHVanguard Global Technology Index (Hedged) ETF | 51% | Compare in calculator → |
| UYLDGlobal X S&P 500 Covered Call Complex ETF | 51% | Compare in calculator → |
| SPYState Street SPDR S&P 500 ETF | 50% | Compare in calculator → |
| IHVViShares S&P 500 Aud Hedged ETF | 50% | Compare in calculator → |
Head to head: IOO vs IVV · all comparisons
Check IOO against your own ETFs →Core or satellite?
CORE US shares
IOO is closer to a concentrated core or growth tilt. It overlaps heavily with any global or US ETF. Read more in core and satellite investing.
Read more: Hedged vs unhedged ETFs
IOO FAQs
Is IOO a good ETF?
IOO has a long track record and has benefited from the run in mega-cap tech. It is far more concentrated than a broad global ETF, so it carries more single-company risk. Whether it suits you depends on your goals and the rest of your portfolio.
What does IOO invest in?
IOO invests in 100 of the world’s largest multinational companies, weighted by size. Its largest holdings are Apple Inc, NVIDIA Corp, Microsoft Corp, and its biggest sector is information technology at about 47%.
What ETFs are similar to IOO?
The ETFs with the most overlap with IOO are IHOO (about 98%) and VTEK (about 51%). Use the free ETF overlap calculator to check your own mix.
Should I own IOO and IHOO together?
Usually there is little point: their holdings overlap by about 98%, so owning both mostly doubles up.
Fee, size and returns: TMX Australia Funds Report to 30 September 2026; returns are total returns, 5-year figure is cumulative. Holdings from iShares (BlackRock) as at 30 October 2026. Chart: TradingView. General information only, not a recommendation to buy or sell IOO. Consider the PDS and TMD before investing.