Data as of Oct 28, 2026.
MGK vs VOO: Differences, Returns & Fees
Over the year to Oct 28, 2026, MGK returned +7.8% to VOO's +13.7%; 52% 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 $1.0tn for Vanguard S&P 500 ETF.
Pair scorecard
VOO costs 0.02 points a year less; their one-year returns differ by 5.9 points; VOO is far larger, $1.0tn against $34.9bn.
| Measure | MGK | VOO |
|---|---|---|
| Return | ||
| Total return, 1 year | +7.8% | +13.7% |
| Drawdown | ||
| Below its high | 4.4%, high on Oct 6, 2026 | |
| Benchmark | ||
| What it tracks | Morningstar US Mega Cap Growth Index | S&P 500 Index |
| Cost and size | ||
| Expense ratio | 0.05% | 0.03% |
| Net assets, as of Sep 30, 2026 | $34.9bn | $1.0tn |
| Holdings | ||
| Holdings in common | 52% | |
| Top ten holdings, share of the fund | 64.5% | 39.1% |
Holdings in common uses holdings dated Sep 30, 2026. Method
Risk and return
Sep 17, 2010 to Oct 23, 2026 · 840 weekly returnsMGK returned more: +1,147.5% to +804.0%. VOO swung less: 15.9% to 18.4%. VOO fell slightly less at its worst: −31.8% to −35.2%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | MGK | VOO | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,147.5% | +804.0% | MGK | Price change plus distributions, reinvested. |
| Annualized | +16.9% | +14.6% | MGK | Total return as a yearly rate. |
| Price return | +958.9% | +575.9% | MGK | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 18.4% | 15.9% | VOO | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 12.2% | 10.9% | VOO | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −35.2% | −31.8% | VOO (slight) | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.86 | 0.84 | MGK (slight) | Return above Treasury bills per unit of volatility. |
| Sortino | 1.29 | 1.22 | MGK (slight) | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.48 | 0.46 | MGK (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 VOO hold 52% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026.
half
52% in common
Only in one fund ↓
Side by side
MGK and VOO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MGK and VOO do different jobs. What does each one do in a portfolio?
- What each follows. MGK follows Morningstar US Mega Cap Growth Index and VOO follows S&P 500 Index.
- One-year total return. Over 1 year to Oct 28, 2026 MGK returned +7.8% and VOO +13.7% with distributions reinvested, a gap of 5.9 points.
- Number of holdings. MGK holds 54 positions and VOO holds 507.
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.
VOO
VOO tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.7% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% a year. 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 507 positions, with the top ten at 39.1%.
Questions people ask
- Which returned more over the last year, MGK or VOO?
- In the year to Oct 28, 2026, with distributions reinvested, MGK returned +7.8% and VOO +13.7%.
- Which is cheaper, MGK or VOO?
- VOO is cheaper, by 0.02 percentage points a year. That is about $2 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
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 VOO, data as of Oct 28, 2026. https://etfiq.com/compare/any/mgk-vs-voo
ETFIQ. (Oct 28, 2026). MGK against VOO. Retrieved from https://etfiq.com/compare/any/mgk-vs-voo
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