VTSPX vs. VFSIX
VTSPX (Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares) and VFSIX (Vanguard Short-Term Investment-Grade Fund Institutional Shares) are both mutual funds - VTSPX is a Inflation-Protected Bonds fund managed by Vanguard, while VFSIX is a Total Bond Market fund managed by Vanguard. Over the past 10 years, VTSPX returned 3.10%/yr vs 2.59%/yr for VFSIX. A 0.57 correlation means they provide meaningful diversification when combined. VTSPX charges 0.04%/yr vs 0.07%/yr for VFSIX.
Performance
VTSPX vs. VFSIX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, VTSPX achieves a 1.70% return, which is significantly higher than VFSIX's 0.44% return. Over the past 10 years, VTSPX has outperformed VFSIX with an annualized return of 3.10%, while VFSIX has yielded a comparatively lower 2.59% annualized return.
VTSPX
- 1D
- -0.28%
- 1M
- -0.16%
- YTD
- 1.70%
- 6M
- 1.81%
- 1Y
- 4.60%
- 3Y*
- 5.10%
- 5Y*
- 3.30%
- 10Y*
- 3.10%
VFSIX
- 1D
- -0.29%
- 1M
- -0.27%
- YTD
- 0.44%
- 6M
- 0.92%
- 1Y
- 4.72%
- 3Y*
- 5.45%
- 5Y*
- 2.28%
- 10Y*
- 2.59%
VTSPX vs. VFSIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VTSPX Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares | 1.70% | 6.06% | 4.75% | 4.61% | -2.82% | 5.32% | 4.99% | 4.82% | 0.59% | 0.83% |
VFSIX Vanguard Short-Term Investment-Grade Fund Institutional Shares | 0.44% | 6.89% | 5.12% | 5.88% | -5.72% | -0.59% | 5.28% | 5.88% | 1.00% | 2.15% |
Correlation
The correlation between VTSPX and VFSIX is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.48 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.70 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.65 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.58 |
Correlation (All Time) Calculated using the full available price history since Jan 2, 2013 | 0.57 |
The correlation between VTSPX and VFSIX shifts across timeframes, from 0.48 (1 year) to 0.70 (3 years), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
VTSPX vs. VFSIX — Risk / Return Rank
VTSPX
VFSIX
VTSPX vs. VFSIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX) and Vanguard Short-Term Investment-Grade Fund Institutional Shares (VFSIX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| VTSPX | VFSIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.95 | ||
| Sortino ratioReturn per unit of downside risk | +1.38 | ||
| Omega ratioGain probability vs. loss probability | 1.62 | 1.43 | +0.19 |
| Calmar ratioReturn relative to maximum drawdown | 6.15 | 2.60 | +3.55 |
| Martin ratioReturn relative to average drawdown | 24.47 | 10.30 | +14.17 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| VTSPX | VFSIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.85 | 1.90 | +0.95 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 1.24 | 0.76 | +0.48 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 1.39 | 1.04 | +0.35 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.07 | 1.53 | -0.46 |
Drawdowns
VTSPX vs. VFSIX - Drawdown Comparison
The maximum VTSPX drawdown since its inception was -5.35%, smaller than the maximum VFSIX drawdown of -9.21%. Use the drawdown chart below to compare losses from any high point for VTSPX and VFSIX.
Loading charts...
Drawdown Indicators
| VTSPX | VFSIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.35% | -9.21% | +3.86% |
Max Drawdown (1Y)Largest decline over 1 year | -0.72% | -1.71% | +0.99% |
Max Drawdown (3Y)Largest decline over 3 years | -0.92% | -1.71% | +0.79% |
Max Drawdown (5Y)Largest decline over 5 years | -5.35% | -9.21% | +3.86% |
Max Drawdown (10Y)Largest decline over 10 years | -5.35% | -9.21% | +3.86% |
Current DrawdownCurrent decline from peak | -0.39% | -0.61% | +0.22% |
Average DrawdownAverage peak-to-trough decline | -1.01% | -0.79% | -0.22% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.18% | 0.43% | -0.25% |
Volatility
VTSPX vs. VFSIX - Volatility Comparison
The current volatility for Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares (VTSPX) is 0.61%, while Vanguard Short-Term Investment-Grade Fund Institutional Shares (VFSIX) has a volatility of 0.78%. This indicates that VTSPX experiences smaller price fluctuations and is considered to be less risky than VFSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| VTSPX | VFSIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.61% | 0.78% | -0.17% |
Volatility (6M)Calculated over the trailing 6-month period | 1.16% | 1.69% | -0.53% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.55% | 2.34% | -0.79% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.67% | 2.99% | -0.32% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.23% | 2.49% | -0.26% |
VTSPX vs. VFSIX - Expense Ratio Comparison
VTSPX has a 0.04% expense ratio, which is lower than VFSIX's 0.07% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
VTSPX vs. VFSIX - Dividend Comparison
VTSPX's dividend yield for the trailing twelve months is around 3.60%, less than VFSIX's 4.76% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VFSIX Vanguard Short-Term Investment-Grade Fund Institutional Shares | 4.76% | 4.61% | 4.19% | 2.88% | 2.06% | 1.81% | 2.35% | 2.95% | 2.80% | 2.13% | 2.17% | 2.12% |
VTSPX Vanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares | 3.60% | 3.81% | 2.70% | 2.86% | 6.84% | 4.69% | 1.21% | 1.96% | 2.47% | 1.52% | 0.80% | 0.00% |
Frequently Asked Questions
VTSPX and VFSIX have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
VFSIX has higher volatility (0.78%) compared to VTSPX (0.61%). In terms of maximum drawdown, VTSPX dropped -5.35% vs VFSIX's -9.21%.
VTSPX currently has the higher Sharpe Ratio (2.85 vs 1.90), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
Find the right allocation for VTSPX and VFSIX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer