VFISX vs. VFIAX
Compare and contrast key facts about Vanguard Short-Term Treasury Fund Investor Shares (VFISX) and Vanguard 500 Index Fund Admiral Shares (VFIAX).
VFISX is managed by Vanguard. It was launched on Oct 28, 1991. VFIAX is managed by Vanguard. It was launched on Nov 13, 2000.
Performance
VFISX vs. VFIAX - Performance Comparison
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VFISX vs. VFIAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VFISX Vanguard Short-Term Treasury Fund Investor Shares | -0.02% | 5.36% | 3.75% | 3.54% | -4.71% | -0.88% | 3.95% | 3.60% | 1.36% | 0.38% |
VFIAX Vanguard 500 Index Fund Admiral Shares | -4.35% | 17.83% | 24.97% | 26.24% | -18.16% | 28.65% | 18.32% | 31.46% | -4.45% | 21.78% |
Returns By Period
In the year-to-date period, VFISX achieves a -0.02% return, which is significantly higher than VFIAX's -4.35% return. Over the past 10 years, VFISX has underperformed VFIAX with an annualized return of 1.58%, while VFIAX has yielded a comparatively higher 14.04% annualized return.
VFISX
- 1D
- 0.10%
- 1M
- -0.70%
- YTD
- -0.02%
- 6M
- 0.90%
- 1Y
- 3.32%
- 3Y*
- 3.72%
- 5Y*
- 1.38%
- 10Y*
- 1.58%
VFIAX
- 1D
- 2.92%
- 1M
- -5.03%
- YTD
- -4.35%
- 6M
- -2.16%
- 1Y
- 17.30%
- 3Y*
- 18.27%
- 5Y*
- 11.75%
- 10Y*
- 14.04%
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VFISX vs. VFIAX - Expense Ratio Comparison
VFISX has a 0.20% expense ratio, which is higher than VFIAX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
VFISX vs. VFIAX — Risk / Return Rank
VFISX
VFIAX
VFISX vs. VFIAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Treasury Fund Investor Shares (VFISX) and Vanguard 500 Index Fund Admiral Shares (VFIAX). 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.
| VFISX | VFIAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.56 | 0.97 | +0.59 |
Sortino ratioReturn per unit of downside risk | 2.57 | 1.49 | +1.07 |
Omega ratioGain probability vs. loss probability | 1.33 | 1.23 | +0.10 |
Calmar ratioReturn relative to maximum drawdown | 2.70 | 1.52 | +1.18 |
Martin ratioReturn relative to average drawdown | 9.57 | 7.29 | +2.27 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| VFISX | VFIAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.56 | 0.97 | +0.59 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.53 | 0.70 | -0.17 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.75 | 0.78 | -0.03 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.53 | 0.44 | +1.10 |
Correlation
The correlation between VFISX and VFIAX is -0.19. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.
Dividends
VFISX vs. VFIAX - Dividend Comparison
VFISX's dividend yield for the trailing twelve months is around 3.48%, more than VFIAX's 1.18% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VFISX Vanguard Short-Term Treasury Fund Investor Shares | 3.48% | 3.89% | 4.38% | 3.95% | 1.93% | 0.52% | 2.20% | 2.39% | 2.10% | 1.15% | 1.18% | 0.83% |
VFIAX Vanguard 500 Index Fund Admiral Shares | 1.18% | 1.12% | 1.24% | 1.45% | 1.68% | 1.24% | 1.53% | 1.87% | 2.05% | 1.78% | 2.02% | 2.10% |
Drawdowns
VFISX vs. VFIAX - Drawdown Comparison
The maximum VFISX drawdown since its inception was -6.86%, smaller than the maximum VFIAX drawdown of -55.20%. Use the drawdown chart below to compare losses from any high point for VFISX and VFIAX.
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Drawdown Indicators
| VFISX | VFIAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -6.86% | -55.20% | +48.34% |
Max Drawdown (1Y)Largest decline over 1 year | -1.40% | -12.12% | +10.72% |
Max Drawdown (5Y)Largest decline over 5 years | -6.86% | -24.53% | +17.67% |
Max Drawdown (10Y)Largest decline over 10 years | -6.86% | -33.83% | +26.97% |
Current DrawdownCurrent decline from peak | -1.00% | -6.24% | +5.24% |
Average DrawdownAverage peak-to-trough decline | -0.65% | -9.46% | +8.81% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.40% | 2.52% | -2.12% |
Volatility
VFISX vs. VFIAX - Volatility Comparison
The current volatility for Vanguard Short-Term Treasury Fund Investor Shares (VFISX) is 0.66%, while Vanguard 500 Index Fund Admiral Shares (VFIAX) has a volatility of 5.35%. This indicates that VFISX experiences smaller price fluctuations and is considered to be less risky than VFIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VFISX | VFIAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.66% | 5.35% | -4.69% |
Volatility (6M)Calculated over the trailing 6-month period | 1.41% | 9.53% | -8.12% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.23% | 18.32% | -16.09% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.64% | 16.91% | -14.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.10% | 18.05% | -15.95% |