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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
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Returns By Period
Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX) has returned 0.97% so far this year and 3.93% over the past 12 months. Over the last ten years, VTSPX has returned 3.08% per year, falling short of the S&P 500 Index benchmark, which averaged 12.16% annually.
Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares
- 1D
- 0.28%
- 1M
- 0.04%
- YTD
- 0.97%
- 6M
- 1.36%
- 1Y
- 3.93%
- 3Y*
- 4.69%
- 5Y*
- 3.51%
- 10Y*
- 3.08%
Benchmark (S&P 500 Index)
- 1D
- 2.91%
- 1M
- -5.09%
- YTD
- -4.63%
- 6M
- -2.39%
- 1Y
- 16.33%
- 3Y*
- 16.69%
- 5Y*
- 10.18%
- 10Y*
- 12.16%
Monthly Returns
Based on dividend-adjusted daily data since Jan 2, 2013, VTSPX's average daily return is +0.01%, while the average monthly return is +0.19%. At this rate, your investment would double in approximately 30.4 years.
Historically, 63% of months were positive and 37% were negative. The best month was Mar 2023 with a return of +1.9%, while the worst month was Sep 2022 at -2.9%. The longest winning streak lasted 10 consecutive months, and the longest losing streak was 4 months.
On a daily basis, VTSPX closed higher 45% of trading days. The best single day was Sep 28, 2022 with a return of +0.8%, while the worst single day was Mar 9, 2020 at -0.9%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.52% | 0.40% | 0.04% | 0.97% | |||||||||
| 2025 | 0.91% | 1.14% | 0.96% | 0.80% | -0.36% | 0.53% | 0.32% | 1.27% | -0.06% | 0.12% | 0.24% | 0.03% | 6.06% |
| 2024 | 0.46% | -0.21% | 0.56% | -0.04% | 0.92% | 0.59% | 0.91% | 0.57% | 1.00% | -0.41% | 0.41% | -0.10% | 4.75% |
| 2023 | 0.73% | -0.38% | 1.93% | 0.13% | -0.63% | -0.19% | 0.51% | 0.13% | -0.20% | 0.38% | 1.06% | 1.09% | 4.61% |
| 2022 | -0.50% | 0.98% | -0.76% | -0.04% | 0.39% | -1.47% | 1.77% | -1.47% | -2.92% | 1.05% | 0.46% | -0.25% | -2.82% |
| 2021 | 0.59% | 0.08% | 0.42% | 0.85% | 0.77% | 0.08% | 1.27% | 0.08% | -0.05% | 0.66% | 0.15% | 0.32% | 5.32% |
Benchmark Metrics
Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares has an annualized alpha of 2.12%, beta of 0.01, and R² of 0.01 versus S&P 500 Index. Calculated based on daily prices since January 03, 2013.
- This fund participates in less of S&P 500 Index's moves in both directions, but captures a larger share of gains (8.44%) than losses (2.95%) — typical of diversified or defensive assets.
- Beta of 0.01 may look defensive, but with R² of 0.01 this fund is largely uncorrelated with S&P 500 Index — low beta reflects independence, not downside protection. See the Volatility section for a true picture of this fund's risk.
- R² of 0.01 means this fund moves largely independently of S&P 500 Index — capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.
- Alpha
- 2.12%
- Beta
- 0.01
- R²
- 0.01
- Upside Capture
- 8.44%
- Downside Capture
- 2.95%
Expense Ratio
VTSPX has an expense ratio of 0.04%, which is considered low.
Return for Risk
Risk / Return Rank
VTSPX ranks 96 for risk / return — in the top 96% of mutual funds on our site. This means strong returns relative to risk — exactly what professional investors look for. Well-suited for investors who want to maximize return per unit of risk.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX) and compare them to a chosen benchmark (S&P 500 Index).
| VTSPX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 2.31 | 0.90 | +1.41 |
Sortino ratioReturn per unit of downside risk | 3.51 | 1.39 | +2.13 |
Omega ratioGain probability vs. loss probability | 1.51 | 1.21 | +0.30 |
Calmar ratioReturn relative to maximum drawdown | 4.69 | 1.40 | +3.29 |
Martin ratioReturn relative to average drawdown | 14.73 | 6.61 | +8.12 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Explore VTSPX risk-adjusted metrics in detail
Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.
Dividends
Dividend History
Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares provided a 3.58% dividend yield over the last twelve months, with an annual payout of $0.90 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.90 | $0.95 | $0.66 | $0.68 | $1.60 | $1.21 | $0.31 | $0.48 | $0.59 | $0.37 | $0.20 |
Dividend yield | 3.58% | 3.81% | 2.70% | 2.86% | 6.84% | 4.69% | 1.21% | 1.96% | 2.47% | 1.52% | 0.80% |
Monthly Dividends
The table displays the monthly dividend distributions for Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.00 | |||||||||
| 2025 | $0.00 | $0.00 | $0.05 | $0.00 | $0.00 | $0.21 | $0.00 | $0.00 | $0.33 | $0.00 | $0.00 | $0.36 | $0.95 |
| 2024 | $0.00 | $0.00 | $0.01 | $0.00 | $0.00 | $0.22 | $0.00 | $0.00 | $0.15 | $0.00 | $0.00 | $0.27 | $0.66 |
| 2023 | $0.00 | $0.00 | $0.01 | $0.00 | $0.00 | $0.18 | $0.00 | $0.00 | $0.17 | $0.00 | $0.00 | $0.32 | $0.68 |
| 2022 | $0.00 | $0.00 | $0.24 | $0.00 | $0.00 | $0.34 | $0.00 | $0.00 | $0.45 | $0.00 | $0.00 | $0.56 | $1.60 |
| 2021 | $0.00 | $0.00 | $0.05 | $0.00 | $0.00 | $0.24 | $0.00 | $0.00 | $0.44 | $0.00 | $0.00 | $0.48 | $1.21 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares was 5.35%, occurring on Sep 30, 2022. Recovery took 303 trading sessions.
The current Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares drawdown is 0.28%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -5.35% | Mar 14, 2022 | 140 | Sep 30, 2022 | 303 | Dec 14, 2023 | 443 |
| -3.95% | Mar 6, 2020 | 9 | Mar 18, 2020 | 55 | Jun 5, 2020 | 64 |
| -3.61% | Apr 3, 2013 | 684 | Dec 16, 2015 | 299 | Feb 24, 2017 | 983 |
| -1.98% | Nov 18, 2021 | 58 | Feb 10, 2022 | 12 | Mar 1, 2022 | 70 |
| -0.92% | Apr 4, 2025 | 6 | Apr 11, 2025 | 10 | Apr 28, 2025 | 16 |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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