Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
VO vs VONG: how they differ
VO and VONG hold 8% of their weight in the same names, and VO returned more over the year.
Vanguard Mid-Cap Index Fund and Vanguard Russell 1000 Growth Index Fund.
What they hold in common
By the books each fund has filed, VO and VONG hold 8% of their money in the same securities at the same weight.
| Holding | VO | VONG |
|---|---|---|
| Vertiv Holdings Co | 1.23% | 0.36% |
| Howmet Aerospace Inc | 1.04% | 0.31% |
| Fortinet Inc | 0.46% | 0.26% |
| Snowflake Inc | 0.41% | 0.26% |
| Quanta Services Inc | 1.05% | 0.24% |
| Datadog Inc | 0.84% | 0.23% |
| Cloudflare Inc | 0.76% | 0.23% |
| Hilton Worldwide Holdings Inc | 0.36% | 0.23% |
| Monolithic Power Systems Inc | 0.63% | 0.22% |
| Royal Caribbean Cruises Ltd | 0.74% | 0.22% |
| Rocket Lab Corp | 0.57% | 0.21% |
| Comfort Systems USA Inc | 0.68% | 0.19% |
| Only in VO | Only in VONG |
|---|---|
| Western Digital Corp 1.07% | NVIDIA Corp 13.09% |
| Seagate Technology Holdings PLC 1.05% | Apple Inc 11.97% |
| Cummins Inc 0.95% | Microsoft Corp 8.98% |
| Bloom Energy Corp 0.79% | Broadcom Inc 5.78% |
| Constellation Energy Corp 0.78% | Amazon.com Inc 5.07% |
| Valero Energy Corp 0.75% | Alphabet Inc 3.91% |
| Coherent Corp 0.75% | Tesla Inc 3.48% |
| Teradyne Inc 0.73% | Meta Platforms Inc 3.20% |
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.
| VO Vanguard Mid-Cap Index Fund | VONG Vanguard Russell 1000 Growth Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Vanguard | Vanguard |
| What it is | Mid-Cap | Russell 1000 Growth |
| Total return, 1 year | +12.0% | +7.2% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −5.5 pts | −10.3 pts |
| Expense ratio | 0.03% | 0.07% |
| Already in the S&P 500 | 91.4% | 95.6% |
| Holdings | 282 | 387 |
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.
VONG in plain words
VONG is an index equity fund tracking the Russell 1000 Growth. Over the year to Sep 11, 2026 it returned +7.2% 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 May 31, 2026, 96% of the fund by weight is stocks the S&P 500 also holds, across 387 positions, with the top ten at 61.3%. It sat 4.9% below its high of Jun 1, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, VO or VONG?
- In the year to Sep 12, 2026, with distributions reinvested, VO returned +12.0% and VONG returned +7.2%, so VO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, VO or VONG?
- VO charges 0.03% a year and VONG charges 0.07%, so VO is cheaper. Fees come from each fund's prospectus.
- How much do VO and VONG overlap with the S&P 500?
- By their latest filed holdings, 91% of VO and 96% of VONG by weight is stocks the S&P 500 already holds. Between the two funds, 8% 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, VO against VONG, data as of Sep 12, 2026. https://etfiq.com/compare/any/VO-VONG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources