VTAPX Performance — Vanguard Short-Term Inflation-Protected Securities Index Fund, Admiral Shares
Data updated: 2026-08-28
VTAPX returned +1.65% year to date and +3.60% over one year to Jun 2026. Annualised returns are +5.15% over 3 years and +3.28% over 5 years. The fund trailed its Alternative category average: $100 invested three years ago grew to $116, against $170 for the category, and to $104 over one year, against $110. Volatility over the past three years was 1.64% a year. In the 12 months to Jun 2026 the fund took in a net $11.8B, and assets reached $71.01B.
VTAPX Growth of $100
What $100 invested in Vanguard Short-Term Inflation-Protected Securities Index Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Alternative category average over the same months.
| Period | VTAPX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $104 | $110 |
| 3 years (Jul 2023 – Jun 2026) | $116 | $170 |
| 5 years (Jul 2021 – Jun 2026) | $118 | $159 |
| Since data start (Jul 2019 – Jun 2026) | $129 | $190 |
VTAPX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.65% |
| 1 year | +3.60% |
| 3 years (annualised) | +5.15% |
| 5 years (annualised) | +3.28% |
VTAPX Annual Returns
Calendar-year total returns of Vanguard Short-Term Inflation-Protected Securities Index Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +1.65% |
| 2025 | +6.03% |
| 2024 | +4.73% |
| 2023 | +4.59% |
| 2022 | −2.83% |
| 2021 | +5.26% |
| 2020 | +4.97% |
| 2019 (Jul–Dec) | +1.44% |
VTAPX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.6% | +0.4% | 0.0% | +0.9% | +0.1% | −0.3% | — | — | — | — | — | — |
| 2025 | +0.9% | +1.1% | +1.0% | +0.8% | −0.4% | +0.5% | +0.3% | +1.3% | 0.0% | +0.1% | +0.2% | 0.0% |
| 2024 | +0.5% | −0.2% | +0.6% | −0.1% | +0.9% | +0.6% | +0.9% | +0.6% | +1.0% | −0.4% | +0.4% | −0.1% |
| 2023 | +0.8% | −0.4% | +1.9% | +0.2% | −0.7% | −0.2% | +0.5% | +0.1% | −0.2% | +0.4% | +1.0% | +1.1% |
| 2022 | −0.5% | +1.0% | −0.7% | −0.1% | +0.4% | −1.5% | +1.8% | −1.5% | −2.9% | +1.0% | +0.5% | −0.3% |
| 2021 | +0.5% | +0.1% | +0.5% | +0.8% | +0.8% | 0.0% | +1.3% | +0.1% | −0.1% | +0.7% | +0.2% | +0.3% |
| 2020 | +0.4% | +0.4% | −1.6% | +1.1% | +0.8% | +0.7% | +0.8% | +1.1% | −0.2% | −0.2% | +0.6% | +0.9% |
| 2019 | — | — | — | — | — | — | 0.0% | +0.5% | −0.1% | +0.2% | +0.2% | +0.7% |
VTAPX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 1.64%
- 3-year Sharpe ratio: 0.39 (vs 4.5% risk-free rate)
- Best month: +1.28% (Aug 2025)
- Worst month: −0.41% (Oct 2024)
VTAPX Fund Flows
Monthly money in and out of Vanguard Short-Term Inflation-Protected Securities Index Fund, from SEC Form N-PORT.
- 12-month net flow: $11.8B
- 12-month gross sales (incl. reinvestments): $22.0B
- Sales ÷ redemptions: 2.15×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $1.6B | $801.6M | $836.8M |
| May 2026 | $2.6B | $742.2M | $1.9B |
| Apr 2026 | $3.0B | $950.2M | $2.0B |
| Mar 2026 | $1.3B | $682.8M | $654.8M |
| Feb 2026 | $908.8M | $591.4M | $317.5M |
| Jan 2026 | $1.8B | $2.5B | −$712.2M |
| Dec 2025 | $2.5B | $722.2M | $1.8B |
| Nov 2025 | $1.3B | $432.3M | $833.7M |
| Oct 2025 | $2.6B | $940.9M | $1.7B |
| Sep 2025 | $1.5B | $575.0M | $942.6M |
| Aug 2025 | $1.0B | $637.7M | $409.2M |
| Jul 2025 | $1.9B | $727.0M | $1.1B |
VTAPX Assets Under Management
Net assets of Vanguard Short-Term Inflation-Protected Securities Index Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $71.01B |
| 2026-03-31 | $65.88B |
| 2025-12-31 | $64.99B |
| 2025-09-30 | $61.61B |
| 2025-06-30 | $58.89B |
| 2025-03-31 | $57.24B |
| 2024-12-31 | $54.37B |
| 2024-09-30 | $53.80B |
| 2024-06-30 | $51.75B |
| 2024-03-31 | $51.78B |
| 2023-12-31 | $51.45B |
| 2023-09-30 | $52.07B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.