VMCIX — Vanguard Mid-Cap Index Fund
Data updated: 2026-08-28
VMCIX — Vanguard Mid-Cap Index Fund. United States Mid Cap Blend / Core Equity · $224.06B AUM. Holdings, fees, performance and SEC filings.
VMCIX Fund Overview
VMCIX — Vanguard Mid-Cap Index Fund is a US ETF managed by Vanguard Index Funds, categorised as United States Mid Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: Vanguard Index Funds
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $224.06B
- 1-year return: 16.8%
- Ticker: VMCIX
- SEC CIK: 0000036405
- SEC series ID: S000002844
- Share class ID: C000007793
VMCIX Holdings
Top 10 holdings of Vanguard Mid-Cap Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Vertiv Holdings Co | 1.22% |
| Western Digital Corp | 1.06% |
| Seagate Technology Holdings PLC | 1.05% |
| Quanta Services Inc | 1.04% |
| Howmet Aerospace Inc | 1.04% |
| Cummins Inc | 0.95% |
| Datadog Inc | 0.83% |
| Bloom Energy Corp | 0.79% |
| Constellation Energy Corp | 0.78% |
| Robinhood Markets Inc | 0.77% |
VMCIX Portfolio Allocation
Asset-class allocation of Vanguard Mid-Cap Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.7% |
| Cash & Equivalents | 0.5% |
VMCIX Performance
Total returns for VMCIX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 11.9% |
| 1 year | 16.8% |
| 3 years (annualised) | 15.3% |
| 5 years (annualised) | 7.9% |
VMCIX Risk Information
Risk metrics for VMCIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 10.8%
VMCIX Costs and Fees
VMCIX costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.03%
- Portfolio turnover: 16%
- Brokerage commissions: 0.30 bps of average net assets (SEC N-CEN)
VMCIX Cashflows
Over the 12 months to 2026-06, Vanguard Mid-Cap Index Fund had net inflows of $2.86B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $684.38M |
| 2026-05 | $587.00M |
| 2026-04 | $333.87M |
| 2026-03 | $1.03B |
| 2026-02 | $623.89M |
| 2026-01 | −$661.43M |
VMCIX Debt Constituents
No individual debt constituents are reported in Vanguard Mid-Cap Index Fund's latest SEC N-PORT filing.
VMCIX Prospectus and SEC Filings
Official Vanguard Mid-Cap Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-28
- Prospectus (485BPOS) — filed 2025-04-29
- Prospectus supplement (497) — filed 2026-02-02
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2026-03-12
- Annual census (N-CEN) — filed 2025-03-13
Related Funds
Other United States Mid Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.