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IOOvsMGCETF Comparison
iShares Global 100 ETF (IOO) belongs to the Global Large Cap segment. Vanguard Mega Cap ETF (MGC) is part of the US Large Cap segment. IOO's top 3 sector exposures are Information Technology, Communication Services and Health Care. In contrast, MGC's top sector exposures are Information Technology, Communication Services and Consumer Discretionary. IOO is more expensive with a Total Expense Ratio (TER) of 0.4%, versus 0.05% for MGC. IOO is down -0.81% year-to-date (YTD) with -$51M in YTD flows. MGC performs worse with -1.64% YTD performance, and -$387M in YTD flows. Run a side-by-side ETF comparison of IOO and MGC below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
IOO vs MGC performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IOO MGC | -2.52%-2.06% | -1.09%-2.18% | -0.81%-1.64% | +31.18%+24.22% | +99.06%+91.13% | +105.40%+89.27% |
| Flows | IOO MGC | -$12M-$13M | -$51M+$320M | -$51M-$387M | -$50M+$1.61B | +$1.00B+$2.41B | +$1.47B+$2.63B |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IOO MGC | +13.30%+11.82% | +18.87%+18.72% | +15.60%+15.21% | +16.81%+17.33% |
| Max drawdown | IOO MGC | -4.58%-3.98% | -14.97%-13.99% | -19.16%-19.36% | -23.35%-25.79% |
| Max drawdown duration | IOO MGC | 43d58d | 45d45d | 107d126d | 554d707d |
IOO | MGC | |
Last sale 3/12/2026 at 1:49 PM | $123.98 | $244.13 |
| Previous close 03/11/2026 | $125.61 | $246.97 |
| Consolidated volume 03/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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IOO | MGC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
IOO | MGC | |
|---|---|---|
| Last price | $123.98 | $244.13 |
| 1D performance | -1.30% | -1.15% |
| AuM | $7.90 B | $9.31 B |
| E/R | 0.4% | 0.05% |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the IOO and MGC ETFs performed in 2026?
As of March 11, 2026, IOO is down -0.81% year-to-date (YTD), while MGC has lost -1.64%. That puts IOO better performer ahead so far this year.
Which ETF is attracting more investor money: IOO or MGC?
Year-to-date, the IOO ETF saw -$51M in flows, compared to -$387M for MGC.
Which ETF is more volatile: IOO or MGC?
Over the past year, IOO had a volatility of 18.87%, while MGC experienced 18.72%.
Which ETF is bigger: IOO or MGC?
As of March 11, 2026, IOO holds $7.90 B in assets under management (AUM), while MGC manages $9.31 B.
What sectors do the IOO and MGC ETFs invest in?
IOO leans toward sectors like Information Technology, Communication Services and Health Care. Meanwhile, MGC focuses on Information Technology, Communication Services and Consumer Discretionary.
What are the top holdings of the IOO ETF and MGC ETF?
IOO top holdings include NVIDIA, APPLE and MICROSOFT-T. MGC holds in its top three: NVIDIA, APPLE and MICROSOFT-T.
Which ETF is more diversified: IOO or MGC?
IOO holds 103 securities with 64.35% of its assets in the top 15. MGC has 175 securities and a top 15 weight of 52.77%.
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