Data as of Oct 28, 2026.
MGK vs RSP: Differences, Returns & Fees
Over the year to Oct 28, 2026, MGK returned +7.8% to RSP's +16.0%; 10% of their weight is in the same names.
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Net assets: $34.9bn on Sep 30, 2026 for Vanguard Morningstar Mega Cap Growth ETF, and $99.8bn on Oct 27, 2026 for Invesco S&P 500 Equal Weight ETF.
Pair scorecard
MGK costs 0.15 points a year less; their one-year returns differ by 8.2 points.
| Measure | MGK | RSP |
|---|---|---|
| Return | ||
| Total return, 1 year | +7.8% | +16.0% |
| Drawdown | ||
| Below its high | 4.4%, high on Oct 6, 2026 | |
| Benchmark | ||
| What it tracks | Morningstar US Mega Cap Growth Index | S&P 500 Equal Weight Index |
| Cost and size | ||
| Expense ratio | 0.05% | 0.20% |
| Net assets, MGK as of Sep 30, 2026 and RSP as of Oct 27, 2026 | $34.9bn | $99.8bn |
| Holdings | ||
| Holdings in common | 10% | |
| Top ten holdings, share of the fund | 64.5% | 2.7% |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
Risk and return
Jan 4, 2008 to Oct 23, 2026 · 981 weekly returnsMGK returned more: +1,024.1% to +555.8%. MGK swung slightly less: 19.5% to 20.0%. MGK fell less at its worst: −46.4% to −55.4%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | MGK | RSP | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,024.1% | +555.8% | MGK | Price change plus distributions, reinvested. |
| Annualized | +13.7% | +10.5% | MGK | Total return as a yearly rate. |
| Price return | +823.8% | +381.8% | MGK | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 19.5% | 20.0% | MGK (slight) | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 13.3% | 14.1% | MGK (slight) | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −46.4% | −55.4% | MGK | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.68 | 0.53 | MGK | Return above Treasury bills per unit of volatility. |
| Sortino | 1.00 | 0.75 | MGK | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.30 | 0.19 | MGK | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 981 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, MGK and RSP hold 10% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
10% in common
Only in one fund ↓
Side by side
MGK and RSP on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MGK and RSP do different jobs. What does each one do in a portfolio?
- What each follows. MGK follows Morningstar US Mega Cap Growth Index and RSP follows S&P 500 Equal Weight Index.
- Holdings in common. 10% of the weight is in the same securities (holdings dated Sep 30, 2026 and Oct 27, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 MGK returned +7.8% and RSP +16.0% with distributions reinvested, a gap of 8.2 points.
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.
RSP
RSP tracks the S&P 500 equal weight. Over the year to Oct 28, 2026 it returned +16.0% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.20% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 508 positions, with the top ten at 2.7%.
Questions people ask
- Which returned more over the last year, MGK or RSP?
- In the year to Oct 28, 2026, with distributions reinvested, MGK returned +7.8% and RSP +16.0%.
- Which is cheaper, MGK or RSP?
- MGK is cheaper, by 0.15 percentage points a year. That is about $15 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 RSP, data as of Oct 28, 2026. https://etfiq.com/compare/any/mgk-vs-rsp
ETFIQ. (Oct 28, 2026). MGK against RSP. Retrieved from https://etfiq.com/compare/any/mgk-vs-rsp
[MGK against RSP (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mgk-vs-rsp)
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