Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MGK vs VOO: how they differ
MGK and VOO hold 51% of their weight in the same names, and VOO returned more over the year.
Vanguard Mega Cap Growth Index Fund and Vanguard 500 Index Fund.
What they hold in common
By the books each fund has filed, MGK and VOO hold 51% of their money in the same securities at the same weight.
| Holding | MGK | VOO |
|---|---|---|
| NVIDIA Corp | 13.29% | 7.53% |
| Apple Inc | 12.19% | 6.61% |
| Microsoft Corp | 7.52% | 4.31% |
| Amazon.com Inc | 4.47% | 3.63% |
| Alphabet Inc | 5.93% | 3.26% |
| Broadcom Inc | 4.28% | 2.78% |
| Alphabet Inc | 4.67% | 2.60% |
| Meta Platforms Inc | 4.08% | 1.92% |
| Tesla Inc | 3.93% | 1.84% |
| Eli Lilly & Co | 3.41% | 1.48% |
| Advanced Micro Devices Inc | 3.20% | 1.47% |
| Intel Corp | 1.10% | 1.03% |
| Only in MGK | Only in VOO |
|---|---|
| Space Exploration Technologies Corp 0.48% | Micron Technology Inc 2.02% |
| Snowflake Inc 0.34% | Berkshire Hathaway Inc 1.43% |
| JPMorgan Chase & Co 1.26% | |
| Johnson & Johnson 0.95% | |
| Exxon Mobil Corp 0.88% | |
| Walmart Inc 0.77% | |
| Caterpillar Inc 0.76% | |
| Cisco Systems Inc 0.72% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.
| MGK Vanguard Mega Cap Growth Index Fund | VOO Vanguard 500 Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Vanguard | Vanguard |
| What it is | Mega Cap Growth | S&P 500 |
| Total return, 1 year | +14.9% | +17.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −2.6 pts | +0.1 pts |
| Expense ratio | 0.07% | 0.03% |
| Already in the S&P 500 | 99.2% | 100.0% |
| Holdings | 56 | 506 |
MGK in plain words
MGK is an index equity fund tracking the Mega Cap Growth. Over the year to Sep 11, 2026 it returned +14.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.07% a year. By its holdings filed for Jun 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 56 positions, with the top ten at 63.8%.
VOO in plain words
VOO is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 506 positions, with the top ten at 36.5%.
Questions people ask
- Which returned more over the last year, MGK or VOO?
- In the year to Sep 12, 2026, with distributions reinvested, MGK returned +14.9% and VOO returned +17.6%, so VOO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MGK or VOO?
- MGK charges 0.07% a year and VOO charges 0.03%, so VOO is cheaper. Fees come from each fund's prospectus.
- How much do MGK and VOO overlap with the S&P 500?
- By their latest filed holdings, 99% of MGK and 100% of VOO by weight is stocks the S&P 500 already holds. Between the two funds, 51% of their books are the same securities at the same weight.
Other comparisons
Where to next
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, MGK against VOO, data as of Sep 12, 2026. https://etfiq.com/compare/any/MGK-VOO Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources