MGK vs RPG: Differences, Returns & Fees
MGK and RPG hold 25% of their weight in the same names, and RPG returned +15.5% over the year. Net assets: $34.9bn on Sep 30, 2026 for Vanguard Morningstar Mega Cap Growth ETF, and $1.8bn on Oct 20, 2026 for Invesco S&P 500 Pure Growth ETF.
MGK costs 0.30 points a year less; their one-year returns differ by 3.6 points.
| MGK | RPG | |
|---|---|---|
| Expense ratio | 0.05% | 0.35% |
| Net assets, MGK as of Sep 30, 2026 and RPG as of Oct 20, 2026 | $34.9bn | $1.8bn |
| Total return, 1 year | +11.9% | +15.5% |
| What it tracks | Morningstar US Mega Cap Growth Index | S&P 500 Pure Growth Index |
| Holdings in common | 25% | |
| Top ten holdings, share of the fund | 64.5% | 29.3% |
| Below its high | 4.5%, high on Oct 6, 2026 | 13.9%, high on Jun 30, 2026 |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 19, 2026.
MGK and RPG 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 RPG follows S&P 500 Pure Growth Index.
- Holdings in common. 25% of the weight is in the same securities (holdings dated Sep 30, 2026 and Oct 19, 2026).
- One-year total return. Over 1 year to Oct 20, 2026 MGK returned +11.9% and RPG +15.5% with distributions reinvested, a gap of 3.6 points.
Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.
Take this comparison to a client
The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.
Not advice. The brief uses the figures on this page, with the data date and a report id. Saved comparisons are listed on your saved page; privacy.
What they hold in common
By the books each fund has filed, MGK and RPG hold 25% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 19, 2026.
half
25% in common
On the same fields
MGK and RPG on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About MGK
MGK tracks an index of Mega Cap Growth. Over the year to Oct 20, 2026 it returned +11.9% 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 4.5% below its high of Oct 6, 2026 on Oct 20, 2026.
About RPG
RPG tracks an index. Over the year to Oct 20, 2026 it returned +15.5% with distributions reinvested, against +15.8% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.35% a year. By its holdings published by its issuer for Oct 19, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 70 positions, with the top ten at 29.3%. It sat 13.9% below its high of Jun 30, 2026 on Oct 20, 2026.
Questions people ask
- Which returned more over the last year, MGK or RPG?
- In the year to Oct 20, 2026, with distributions reinvested, MGK returned +11.9% and RPG +15.5%.
- Which is cheaper, MGK or RPG?
- MGK is cheaper, by 0.30 percentage points a year. That is about $30 on $10,000 held for a year. Fees come from each fund's prospectus.
ETFIQ links to the documents behind every figure; a link is not an endorsement. 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.
Cite this pageCitation, APA and Markdown
ETFIQ, MGK against RPG, data as of Oct 20, 2026. https://etfiq.com/compare/any/mgk-vs-rpg
ETFIQ. (Oct 20, 2026). MGK against RPG. Retrieved from https://etfiq.com/compare/any/mgk-vs-rpg
[MGK against RPG (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/mgk-vs-rpg)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.