IOO vs MGC
iShares Global 100 ETF against Vanguard Morningstar Mega Cap ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
60%
47 shared positions
Fee gap
35 bp
MGC is cheaper
1-year return gap
3.1 pts
IOO is ahead
Larger fund
MGC
$10.6B
Side by side
| IOO | MGC | |
|---|---|---|
| Fund | iShares Global 100 ETF | Vanguard Morningstar Mega Cap ETF |
| Issuer | iShares | Vanguard |
| Category | Global | Large Cap Blend |
| Expense ratio | 0.40% | 0.05% |
| Assets | $9.4B | $10.6B |
| Average daily dollar volume | $25M | $26M |
| Listed | Dec 5, 2000 | Dec 17, 2007 |
| FrenzyCap score | 72 | 84 |
| 1-month return | +2.3% | +3.1% |
| 3-month return | +5.6% | +4.9% |
| Year to date | +15.2% | +14.6% |
| 1-year return | +19.7% | +16.6% |
| 30-day volatility | 11.2% | 10.4% |
| Worst drawdown, 1 year | −9.9% | −10.1% |
| Trailing 12-month yield | 0.80% | 0.90% |
| Holdings | 116 | 182 |
| Top 10 weight | 60.0% | 47.0% |
| Look-through P/E | 26.8 | 26.0 |
| Holdings vs fair value | −1.4% | −0.5% |
| Holdings above 200-day average | 84% | 75% |
| Net flow, latest 3 reported months | −$108M thru Jun 2026 | −$667M thru May 2026 |
| 30-day implied volatility | 13.8% | 13.6% |
| Holdings as of | as of Oct 8, 2026issuer data | as of May 31, 2026SEC filing |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
81% of IOO · 60% of MGC| Holding | IOO | MGC |
|---|---|---|
| NVDA | 13.36% | 9.10% |
| AAPL | 11.90% | 8.55% |
| MSFT | 9.30% | 6.24% |
| AMZN | 5.97% | 4.88% |
| GOOGL | 4.90% | 4.13% |
| AVGO | 4.11% | 3.95% |
| GOOG | 3.93% | 3.25% |
| LLY | 2.24% | 1.75% |
| JPM | 2.11% | 1.41% |
| XOM | 1.66% | 1.13% |
| JNJ | 1.48% | 1.01% |
| WMT | 1.18% | 0.95% |
| INTC | 1.28% | 0.85% |
| CSCO | 1.08% | 0.80% |
| CAT | 0.88% | 0.76% |
| MA | 1.11% | 0.73% |
| CVX | 1.00% | 0.65% |
| PG | 0.84% | 0.62% |
| GE | 0.76% | 0.60% |
| MRK | 0.84% | 0.55% |
| GS | 0.62% | 0.54% |
| TXN | 0.63% | 0.52% |
| PM | 0.75% | 0.52% |
| IBM | 0.51% | 0.52% |
| KO | 0.81% | 0.51% |
Sector mix of the stock holdings
| Sector | IOO | MGC | Gap |
|---|---|---|---|
| Technology | 53.7% | 52.4% | +1.2% |
| Consumer Discretionary | 8.1% | 11.5% | −3.5% |
| Industrials | 6.1% | 9.0% | −3.0% |
| Health Care | 6.7% | 7.9% | −1.3% |
| Financials | 5.5% | 8.7% | −3.2% |
| Energy | 4.2% | 2.2% | +2.0% |
| Consumer Staples | 3.0% | 3.0% | +0.0% |
| Materials | 1.7% | 1.1% | +0.7% |
| Communication Services | 0.0% | 1.7% | −1.7% |
| Utilities | 0.2% | 1.3% | −1.0% |
| Real Estate | 0.2% | 0.9% | −0.7% |
More: full overlap table · IOO holdings · MGC holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.