VANGUARD MID-CAP INDEX FUND
U.S. stock index ETF · tracks CRSP US Mid Cap Index
Vanguard Mid-Cap Index Fund (the Fund) seeks to track the performance of a benchmark index that measures the investment return of mid-capitalization stocks.
The fund tracks the CRSP US Mid Cap Index by holding all or substantially all of its constituent stocks in the same proportions as the index. Because the fund invests in the full index, its performance will closely match the target index.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
1.22% | $2.74B | 8.2M | $334.82 | |
1.06% | $2.39B | 3.7M | $638.72 | |
1.05% | $2.34B | 2.4M | $965.00 | |
1.04% | $2.34B | 3.3M | $720.04 | |
1.04% | $2.33B | 8.7M | $268.86 | |
CMICummins Inc | 0.95% | $2.13B | 3.0M | $713.21 |
DDOGDatadog Inc | 0.83% | $1.87B | 7.2M | $260.36 |
0.79% | $1.77B | 5.9M | $302.70 | |
0.78% | $1.75B | 7.0M | $248.37 | |
0.77% | $1.72B | 17.1M | $100.28 |
Reported price is the fund's own reported value divided by its own reported shares at 2026-06-30 — not a live quote, and not what the fund paid.
The 200 largest of 294 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Stocks | 99.68% |
| Cash & short-term | 0.53% |
| Derivatives | 0.00% |
Derivatives are shown at market value, not notional exposure.
By sector
- Industrials
- 20.3%
- Information Technology
- 16.1%
- Financials
- 14.2%
- Consumer Discretionary
- 8.9%
- 9 other sectors
- 40.5%
- Industrials
- 20.3%
- Information Technology
- 16.1%
- Financials
- 14.2%
- Consumer Discretionary
- 8.9%
- Utilities
- 8.4%
- Health Care
- 7.8%
- Energy
- 7.3%
- Real Estate
- 5.1%
- Consumer Staples
- 4.5%
- Materials
- 4.2%
- Communication Services
- 2.8%
- Cash
- 0.5%
- International
- 0.0%
How it has done
VO share class · total returns with dividends reinvested
Volatility over the last 12 months: 11.82%. Past returns are a record, not a forecast.
May 2026 and Jun 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
The 5 share classes hold the same portfolio
| Share class | Expense ratio | 1 year | 3 years | 5 years | Worst fall |
|---|---|---|---|---|---|
| 0.17% | +22.44% | +54.38% | +43.02% | -12.66% | |
| 0.05% | +22.58% | +54.92% | +43.88% | -12.65% | |
| 0.03% | +22.59% | +54.96% | +43.96% | -12.64% | |
| 0.03% | +22.60% | +54.98% | +43.98% | -12.64% | |
| 0.02% | +22.60% | +55.02% | +44.03% | -12.64% |
These classes hold the same portfolio, so the 1.01pp spread over 5 years is the cost difference between them — roughly 0.20pp a year — not a difference in what they own.
Fees & fund details
VANGUARD MID-CAP INDEX FUND is a U.S. equity index ETF that tracks the CRSP US Mid Cap Index. 22% of VO’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 99% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- ETF
- Expense ratio, by class
- 0.02% – 0.17%· VO 0.03%
- Portfolio turnover
- 16.00% a year · as of 2026 Q2
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
18 new· the largest 8
23 exited· the largest 8
Understand how this fund fits with the rest.
Explore shared holdings, compare funds and follow their businesses with your connected AI:
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