Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MGK vs VOOG: how they differ
MGK and VOOG hold 72% of their weight in the same names, and VOOG returned more over the year.
Vanguard Mega Cap Growth Index Fund and Vanguard S&P 500 Growth Index Fund.
What they hold in common
By the books each fund has filed, MGK and VOOG hold 72% of their money in the same securities at the same weight.
| Holding | MGK | VOOG |
|---|---|---|
| NVIDIA Corp | 13.29% | 14.29% |
| Microsoft Corp | 7.52% | 9.31% |
| Apple Inc | 12.19% | 6.38% |
| Alphabet Inc | 5.93% | 6.17% |
| Alphabet Inc | 4.67% | 4.90% |
| Broadcom Inc | 4.28% | 5.90% |
| Amazon.com Inc | 4.47% | 3.90% |
| Meta Platforms Inc | 4.08% | 3.85% |
| Eli Lilly & Co | 3.41% | 2.44% |
| Advanced Micro Devices Inc | 3.20% | 2.34% |
| Tesla Inc | 3.93% | 2.12% |
| Lam Research Corp | 1.93% | 1.11% |
| Only in MGK | Only in VOOG |
|---|---|
| Intel Corp 1.10% | Micron Technology Inc 3.04% |
| Marvell Technology Inc 1.03% | Berkshire Hathaway Inc 2.42% |
| Vertex Pharmaceuticals Inc 0.60% | JPMorgan Chase & Co 1.43% |
| Western Digital Corp 0.52% | Caterpillar Inc 1.14% |
| Equinix Inc 0.50% | Johnson & Johnson 0.89% |
| Space Exploration Technologies Corp 0.48% | Cisco Systems Inc 0.70% |
| Synopsys Inc 0.45% | RTX Corp 0.67% |
| Ecolab Inc 0.42% | Goldman Sachs Group Inc/The 0.53% |
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 and May 31, 2026.
| MGK Vanguard Mega Cap Growth Index Fund | VOOG Vanguard S&P 500 Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Vanguard | Vanguard |
| What it is | Mega Cap Growth | S&P 500 Growth |
| Total return, 1 year | +14.9% | +17.8% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −2.6 pts | +0.3 pts |
| Expense ratio | 0.07% | 0.05% |
| Already in the S&P 500 | 99.2% | 100.0% |
| Holdings | 56 | 146 |
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%.
VOOG in plain words
VOOG is an index equity fund tracking the S&P 500 Growth. Over the year to Sep 11, 2026 it returned +17.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.05% a year. By its holdings filed for May 31, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 146 positions, with the top ten at 60.2%.
Questions people ask
- Which returned more over the last year, MGK or VOOG?
- In the year to Sep 12, 2026, with distributions reinvested, MGK returned +14.9% and VOOG returned +17.8%, so VOOG returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MGK or VOOG?
- MGK charges 0.07% a year and VOOG charges 0.05%, so VOOG is cheaper. Fees come from each fund's prospectus.
- How much do MGK and VOOG overlap with the S&P 500?
- By their latest filed holdings, 99% of MGK and 100% of VOOG by weight is stocks the S&P 500 already holds. Between the two funds, 72% of their books are the same securities at the same weight.
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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 VOOG, data as of Sep 12, 2026. https://etfiq.com/compare/any/MGK-VOOG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources