VMCIX — Vanguard Mid-Cap Index Fund
Data updated: 2026-05-28
VMCIX — Vanguard Mid-Cap Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Blend / Core Equity · $198.27B AUM · 0.03% expense ratio · 12.8% 1-yr return. From SEC regulatory 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: $198.27B
- 1-year return: 12.8%
- 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 | 1.03% |
| Howmet Aerospace Inc | 1.01% |
| Western Digital Corp | 1.00% |
| Constellation Energy Corp | 0.94% |
| Seagate Technology Holdings PLC | 0.93% |
| Quanta Services Inc | 0.89% |
| SLB Ltd | 0.84% |
| Cummins Inc | 0.81% |
| Valero Energy Corp | 0.80% |
| Phillips 66 | 0.80% |
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 | 99.6% |
| Cash & Equivalents | 0.4% |
VMCIX Performance
Total returns for VMCIX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.6% |
| 1 year | 12.8% |
| 3 years (annualised) | 12.6% |
| 5 years (annualised) | 7.0% |
VMCIX Risk Information
Risk metrics for VMCIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 10.1%
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 2026-03, Vanguard Mid-Cap Index Fund had net inflows of $3.29B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $1.03B |
| 2026-02 | $623.89M |
| 2026-01 | −$661.43M |
| 2025-12 | $1.16B |
| 2025-11 | $66.95M |
| 2025-10 | −$843.11M |
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.
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.