IVOO — Vanguard S&P Mid-Cap 400 Index Fund
Data updated: 2026-07-29
IVOO — Vanguard S&P Mid-Cap 400 Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Blend / Core Equity · $5.60B AUM · 0.07% expense ratio · 25.8% 1-yr return. From SEC regulatory filings.
IVOO Fund Overview
IVOO — Vanguard S&P Mid-Cap 400 Index Fund is a US ETF managed by Vanguard Admiral 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 Admiral Funds
- Category: United States Mid Cap Blend / Core Equity
- Assets under management: $5.60B
- 1-year return: 25.8%
- Ticker: IVOO
- SEC CIK: 0000891190
- SEC series ID: S000030014
- Share class ID: C000092038
IVOO Holdings
Top 10 holdings of Vanguard S&P Mid-Cap 400 Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Flex Ltd | 1.58% |
| Twilio Inc | 0.82% |
| TechnipFMC PLC | 0.79% |
| Curtiss-Wright Corp | 0.79% |
| nVent Electric PLC | 0.77% |
| Sterling Infrastructure Inc | 0.75% |
| XPO Inc | 0.72% |
| Everpure Inc | 0.71% |
| Illumina Inc | 0.71% |
| United Therapeutics Corp | 0.68% |
IVOO Portfolio Allocation
Asset-class allocation of Vanguard S&P Mid-Cap 400 Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.8% |
| Cash & Equivalents | 0.4% |
IVOO Performance
Total returns for IVOO (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 13.2% |
| 1 year | 25.8% |
| 3 years (annualised) | 17.4% |
| 5 years (annualised) | 8.0% |
IVOO Risk Information
Risk metrics for IVOO, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 11.2%
IVOO Costs and Fees
IVOO costs about $7 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.07%
- Gross expense ratio: 0.07%
- Portfolio turnover: 15%
- Brokerage commissions: 0.29 bps of average net assets (SEC N-CEN)
IVOO Cashflows
Over the 12 months to 2026-02, Vanguard S&P Mid-Cap 400 Index Fund had net inflows of $449.30M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $28.37M |
| 2026-01 | $65.92M |
| 2025-12 | $38.03M |
| 2025-11 | $25.19M |
| 2025-10 | $39.03M |
| 2025-09 | $49.29M |
IVOO Debt Constituents
No individual debt constituents are reported in Vanguard S&P Mid-Cap 400 Index Fund's latest SEC N-PORT filing.
IVOO Prospectus and SEC Filings
Official Vanguard S&P Mid-Cap 400 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.