Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MGK vs VO: how they differ
MGK and VO hold 2% of their weight in the same names, and MGK returned more over the year.
Vanguard Mega Cap Growth Index Fund and Vanguard Mid-Cap Index Fund.
What they hold in common
By the books each fund has filed, MGK and VO hold 2% of their money in the same securities at the same weight.
| Holding | MGK | VO |
|---|---|---|
| Western Digital Corp | 0.52% | 1.07% |
| Seagate Technology Holdings PLC | 0.51% | 1.05% |
| Fortinet Inc | 0.35% | 0.46% |
| Snowflake Inc | 0.34% | 0.41% |
| Hilton Worldwide Holdings Inc | 0.30% | 0.36% |
| Cintas Corp | 0.28% | 0.28% |
| Only in MGK | Only in VO |
|---|---|
| NVIDIA Corp 13.29% | Vertiv Holdings Co 1.23% |
| Apple Inc 12.19% | Quanta Services Inc 1.05% |
| Microsoft Corp 7.52% | Howmet Aerospace Inc 1.04% |
| Alphabet Inc 5.93% | Cummins Inc 0.95% |
| Alphabet Inc 4.67% | Datadog Inc 0.84% |
| Amazon.com Inc 4.47% | Bloom Energy Corp 0.79% |
| Broadcom Inc 4.28% | Constellation Energy Corp 0.78% |
| Meta Platforms Inc 4.08% | Robinhood Markets Inc 0.77% |
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 | VO Vanguard Mid-Cap Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Vanguard | Vanguard |
| What it is | Mega Cap Growth | Mid-Cap |
| Total return, 1 year | +14.9% | +12.0% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −2.6 pts | −5.5 pts |
| Expense ratio | 0.07% | 0.03% |
| Already in the S&P 500 | 99.2% | 91.4% |
| Holdings | 56 | 282 |
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%.
VO in plain words
VO is an index equity fund tracking the Mid-Cap. Over the year to Sep 11, 2026 it returned +12.0% 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, 91% of the fund by weight is stocks the S&P 500 also holds, across 282 positions, with the top ten at 9.6%. It sat 4.1% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, MGK or VO?
- In the year to Sep 12, 2026, with distributions reinvested, MGK returned +14.9% and VO returned +12.0%, so MGK returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MGK or VO?
- MGK charges 0.07% a year and VO charges 0.03%, so VO is cheaper. Fees come from each fund's prospectus.
- How much do MGK and VO overlap with the S&P 500?
- By their latest filed holdings, 99% of MGK and 91% of VO by weight is stocks the S&P 500 already holds. Between the two funds, 2% 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 VO, data as of Sep 12, 2026. https://etfiq.com/compare/any/MGK-VO Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources