Data as of Oct 28, 2026.
MGK vs VOOG: Differences, Returns & Fees
Over the year to Oct 28, 2026, MGK returned +7.8% to VOOG's +12.1%; 73% of their weight is in the same names.
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Net assets on Sep 30, 2026: $34.9bn for Vanguard Morningstar Mega Cap Growth ETF and $27.8bn for Vanguard S&P 500 Growth ETF.
Pair scorecard
Both cost 0.05% a year; their one-year returns differ by 4.3 points; MGK is 1.3 times larger.
Points (pts) are percentage points.
| Measure | MGK | VOOG |
|---|---|---|
| Return | ||
| Total return, 1 year | +7.8% | +12.1% |
| Drawdown | ||
| Below its high | 4.4%, high on Oct 6, 2026 | 4.1%, high on Oct 6, 2026 |
| Benchmark | ||
| What it tracks | Morningstar US Mega Cap Growth Index | S&P 500 Growth Index |
| Cost and size | ||
| Expense ratio | 0.05% | 0.05% |
| Net assets, as of Sep 30, 2026 | $34.9bn | $27.8bn |
| Holdings | ||
| Holdings in common | 73% | |
| Top ten holdings, share of the fund | 64.5% | 60.2% |
Holdings in common uses holdings dated Sep 30, 2026. Method
Risk and return
Sep 17, 2010 to Oct 23, 2026 · 840 weekly returnsMGK returned slightly more: +1,147.5% to +1,043.0%. VOOG swung slightly less: 17.5% to 18.4%. VOOG fell slightly less at its worst: −32.0% to −35.2%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | MGK | VOOG | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,147.5% | +1,043.0% | MGK (slight) | Price change plus distributions, reinvested. |
| Annualized | +16.9% | +16.3% | MGK (slight) | Total return as a yearly rate. |
| Price return | +958.9% | +845.5% | MGK | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 18.4% | 17.5% | VOOG (slight) | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 12.2% | 11.7% | VOOG (slight) | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −35.2% | −32.0% | VOOG (slight) | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.86 | 0.86 | Tie | Return above Treasury bills per unit of volatility. |
| Sortino | 1.29 | 1.28 | Tie | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.48 | 0.51 | VOOG (slight) | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 840 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, MGK and VOOG hold 73% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026.
half
73% in common
Only in one fund ↓
Side by side
MGK and VOOG on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MGK and VOOG are built for the same job. How do they differ in cost, holdings and results?
- What each follows. MGK follows Morningstar US Mega Cap Growth Index and VOOG follows S&P 500 Growth Index.
- One-year total return. Over 1 year to Oct 28, 2026 MGK returned +7.8% and VOOG +12.1% with distributions reinvested, a gap of 4.3 points.
- Holdings in common (similar). 73% of the weight is in the same securities (holdings dated Sep 30, 2026).
Data as of Oct 28, 2026.
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MGK
MGK tracks an index of Mega Cap Growth. Over the year to Oct 28, 2026 it returned +7.8% with distributions reinvested. The prospectus expense ratio is 0.05% a year. By its holdings published by its issuer as of Sep 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 54 positions, with the top ten at 64.5%. It sat 4.4% below its high of Oct 6, 2026 on Oct 28, 2026.
VOOG
VOOG tracks the S&P 500 Growth. Over the year to Oct 28, 2026 it returned +12.1% with distributions reinvested, against +12.1% for its benchmark, the S&P 500 Growth Index. By its holdings published by its issuer as of Sep 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 154 positions, with the top ten at 60.2%. It sat 4.1% below its high of Oct 6, 2026 on Oct 28, 2026.
Questions people ask
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How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, MGK against VOOG, data as of Oct 28, 2026. https://etfiq.com/compare/any/mgk-vs-voog
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