Data as of Oct 28, 2026.
MDY vs MGK: Differences, Returns & Fees
Over the year to Oct 28, 2026, MDY returned +12.8% to MGK's +7.8%; 0% of their weight is in the same names.
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Net assets: $25.9bn on Oct 27, 2026 for SPDR S&P MidCap 400 ETF Trust, and $34.9bn on Sep 30, 2026 for Vanguard Morningstar Mega Cap Growth ETF.
Pair scorecard
MGK costs 0.18 points a year less; their one-year returns differ by 5.0 points; MGK is 1.4 times larger.
| Measure | MDY | MGK |
|---|---|---|
| Return | ||
| Total return, 1 year | +12.8% | +7.8% |
| Drawdown | ||
| Below its high | 6.5%, high on Aug 14, 2026 | 4.4%, high on Oct 6, 2026 |
| Benchmark | ||
| What it tracks | S&P MidCap 400 Index | Morningstar US Mega Cap Growth Index |
| Cost and size | ||
| Expense ratio | 0.23% | 0.05% |
| Net assets, as of Sep 30, 2026 | $25.2bn | $34.9bn |
| Holdings | ||
| Holdings in common | 0% | |
| Top ten holdings, share of the fund | 7.5% | 64.5% |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
What they share
By the books each fund has filed, MDY and MGK hold 0% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
MDY and MGK on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MDY
MDY tracks the S&P MidCap 400. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested, against +13.2% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.23% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 401 positions, with the top ten at 7.5%. It sat 6.5% below its high of Aug 14, 2026 on Oct 28, 2026.
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.
Questions people ask
- Which returned more over the last year, MDY or MGK?
- In the year to Oct 28, 2026, with distributions reinvested, MDY returned +12.8% and MGK +7.8%.
- Which is cheaper, MDY or MGK?
- MGK is cheaper, by 0.18 percentage points a year. That is about $18 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, MDY against MGK, data as of Oct 28, 2026. https://etfiq.com/compare/any/mdy-vs-mgk
ETFIQ. (Oct 28, 2026). MDY against MGK. Retrieved from https://etfiq.com/compare/any/mdy-vs-mgk
[MDY against MGK (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mdy-vs-mgk)
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