TWUSX vs. VSBIX
Compare and contrast key facts about American Century Short-Term Government Fund (TWUSX) and Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX).
TWUSX is managed by American Century. It was launched on Dec 14, 1982. VSBIX is managed by Vanguard. It was launched on Aug 23, 2010.
Performance
TWUSX vs. VSBIX - Performance Comparison
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TWUSX vs. VSBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TWUSX American Century Short-Term Government Fund | 0.02% | 4.94% | 3.59% | 3.70% | -4.31% | -0.09% | 3.36% | 2.91% | 1.12% | 0.22% |
VSBIX Vanguard Short-Term Treasury Index Fund Institutional Shares | 0.28% | 5.11% | 4.37% | 4.28% | -3.87% | -0.67% | 3.11% | 3.53% | 1.52% | 0.40% |
Returns By Period
In the year-to-date period, TWUSX achieves a 0.02% return, which is significantly lower than VSBIX's 0.28% return. Over the past 10 years, TWUSX has underperformed VSBIX with an annualized return of 1.48%, while VSBIX has yielded a comparatively higher 1.76% annualized return.
TWUSX
- 1D
- 0.11%
- 1M
- -0.54%
- YTD
- 0.02%
- 6M
- 0.92%
- 1Y
- 3.39%
- 3Y*
- 3.54%
- 5Y*
- 1.46%
- 10Y*
- 1.48%
VSBIX
- 1D
- 0.04%
- 1M
- -0.33%
- YTD
- 0.28%
- 6M
- 1.24%
- 1Y
- 3.69%
- 3Y*
- 4.12%
- 5Y*
- 1.86%
- 10Y*
- 1.76%
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TWUSX vs. VSBIX - Expense Ratio Comparison
TWUSX has a 0.55% expense ratio, which is higher than VSBIX's 0.05% expense ratio.
Return for Risk
TWUSX vs. VSBIX — Risk / Return Rank
TWUSX
VSBIX
TWUSX vs. VSBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Short-Term Government Fund (TWUSX) and Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX). 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.
| TWUSX | VSBIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.84 | 2.65 | -0.80 |
Sortino ratioReturn per unit of downside risk | 3.16 | 4.33 | -1.17 |
Omega ratioGain probability vs. loss probability | 1.40 | 1.58 | -0.18 |
Calmar ratioReturn relative to maximum drawdown | 3.93 | 4.70 | -0.78 |
Martin ratioReturn relative to average drawdown | 12.74 | 18.02 | -5.28 |
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
| TWUSX | VSBIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.84 | 2.65 | -0.80 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.64 | 0.96 | -0.32 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.82 | 1.16 | -0.33 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.00 | 1.09 | -1.09 |
Correlation
The correlation between TWUSX and VSBIX is 0.73, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
TWUSX vs. VSBIX - Dividend Comparison
TWUSX's dividend yield for the trailing twelve months is around 3.34%, less than VSBIX's 3.59% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
TWUSX American Century Short-Term Government Fund | 3.34% | 3.70% | 4.06% | 3.83% | 1.12% | 1.05% | 0.72% | 1.81% | 1.74% | 1.06% | 0.57% | 0.53% |
VSBIX Vanguard Short-Term Treasury Index Fund Institutional Shares | 3.59% | 3.99% | 4.52% | 3.31% | 1.14% | 0.65% | 1.74% | 2.28% | 1.81% | 1.11% | 0.80% | 0.74% |
Drawdowns
TWUSX vs. VSBIX - Drawdown Comparison
The maximum TWUSX drawdown since its inception was -91.08%, which is greater than VSBIX's maximum drawdown of -5.74%. Use the drawdown chart below to compare losses from any high point for TWUSX and VSBIX.
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Drawdown Indicators
| TWUSX | VSBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -91.08% | -5.74% | -85.34% |
Max Drawdown (1Y)Largest decline over 1 year | -0.98% | -0.81% | -0.17% |
Max Drawdown (5Y)Largest decline over 5 years | -5.85% | -5.74% | -0.11% |
Max Drawdown (10Y)Largest decline over 10 years | -5.85% | -5.74% | -0.11% |
Current DrawdownCurrent decline from peak | -74.71% | -0.44% | -74.27% |
Average DrawdownAverage peak-to-trough decline | -81.79% | -0.59% | -81.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.30% | 0.21% | +0.09% |
Volatility
TWUSX vs. VSBIX - Volatility Comparison
American Century Short-Term Government Fund (TWUSX) and Vanguard Short-Term Treasury Index Fund Institutional Shares (VSBIX) have volatilities of 0.52% and 0.51%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TWUSX | VSBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.52% | 0.51% | +0.01% |
Volatility (6M)Calculated over the trailing 6-month period | 1.12% | 0.82% | +0.30% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.94% | 1.42% | +0.52% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.28% | 1.94% | +0.34% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.80% | 1.53% | +0.27% |