VAIPX — Vanguard Inflation-Protected Securities Fund
Data updated: 2026-08-28
VAIPX — Vanguard Inflation-Protected Securities Fund. Alternative · $28.19B AUM · 0.10% expense ratio. Holdings, fees, performance and SEC filings.
VAIPX Fund Overview
VAIPX — Vanguard Inflation-Protected Securities Fund is a US mutual fund managed by Vanguard Bond Index Funds, categorised as Alternative. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Vanguard Bond Index Funds
- Category: Alternative
- Assets under management: $28.19B
- 1-year return: 3.4%
- Ticker: VAIPX
- SEC CIK: 0000794105
- SEC series ID: S000019554
- Share class ID: C000054350
VAIPX Holdings
Top 10 holdings of Vanguard Inflation-Protected Securities Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury Inflation Indexed Bonds | 4.81% |
| United States Treasury Inflation Indexed Bonds | 3.96% |
| United States Treasury Inflation Indexed Bonds | 3.94% |
| United States Treasury Inflation Indexed Bonds | 3.92% |
| United States Treasury Inflation Indexed Bonds | 3.85% |
| United States Treasury Inflation Indexed Bonds | 3.64% |
| United States Treasury Inflation Indexed Bonds | 3.52% |
| United States Treasury Inflation Indexed Bonds | 3.40% |
| United States Treasury Inflation Indexed Bonds | 3.29% |
| United States Treasury Inflation Indexed Bonds | 3.26% |
VAIPX Portfolio Allocation
Asset-class allocation of Vanguard Inflation-Protected Securities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Other | 98.1% |
| Fixed Income | 1.0% |
| Cash & Equivalents | 0.5% |
VAIPX Performance
Total returns for VAIPX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.2% |
| 1 year | 3.4% |
| 3 years (annualised) | 3.9% |
| 5 years (annualised) | 0.9% |
VAIPX Risk Information
Risk metrics for VAIPX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.8%
VAIPX Costs and Fees
VAIPX costs about $10 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.10%
- Gross expense ratio: 0.10%
- Portfolio turnover: 60%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
VAIPX Cashflows
Over the 12 months to 2026-06, Vanguard Inflation-Protected Securities Fund had net inflows of $1.16B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$52.27M |
| 2026-05 | $54.71M |
| 2026-04 | $79.93M |
| 2026-03 | $234.70M |
| 2026-02 | $26.75M |
| 2026-01 | −$76.76M |
VAIPX Debt Constituents
Largest debt holdings of Vanguard Inflation-Protected Securities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.09% |
| United States Treasury Note/Bond | 0.08% |
| United States Treasury Note/Bond | 0.08% |
| United States Treasury Note/Bond | 0.07% |
| United States Treasury Note/Bond | 0.07% |
VAIPX Prospectus and SEC Filings
Official Vanguard Inflation-Protected Securities Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-28
- Prospectus (485BPOS) — filed 2025-04-29
- Prospectus (485BPOS) — filed 2024-04-26
- 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 Alternative 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.