TWUSX vs. TWCUX
Compare and contrast key facts about American Century Short-Term Government Fund (TWUSX) and American Century Ultra Fund (TWCUX).
TWUSX is managed by American Century. It was launched on Dec 14, 1982. TWCUX is managed by American Century. It was launched on Nov 2, 1981.
Performance
TWUSX vs. TWCUX - Performance Comparison
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TWUSX vs. TWCUX - 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% |
TWCUX American Century Ultra Fund | -8.79% | 12.66% | 29.54% | 43.36% | -32.38% | 23.47% | 49.79% | 34.60% | 0.70% | 31.65% |
Returns By Period
In the year-to-date period, TWUSX achieves a 0.02% return, which is significantly higher than TWCUX's -8.79% return. Over the past 10 years, TWUSX has underperformed TWCUX with an annualized return of 1.48%, while TWCUX has yielded a comparatively higher 16.15% 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%
TWCUX
- 1D
- 3.99%
- 1M
- -5.42%
- YTD
- -8.79%
- 6M
- -7.90%
- 1Y
- 14.91%
- 3Y*
- 17.99%
- 5Y*
- 9.40%
- 10Y*
- 16.15%
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TWUSX vs. TWCUX - Expense Ratio Comparison
TWUSX has a 0.55% expense ratio, which is lower than TWCUX's 0.93% expense ratio.
Return for Risk
TWUSX vs. TWCUX — Risk / Return Rank
TWUSX
TWCUX
TWUSX vs. TWCUX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Short-Term Government Fund (TWUSX) and American Century Ultra Fund (TWCUX). 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 | TWCUX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.84 | 0.68 | +1.16 |
Sortino ratioReturn per unit of downside risk | 3.16 | 1.15 | +2.01 |
Omega ratioGain probability vs. loss probability | 1.40 | 1.16 | +0.24 |
Calmar ratioReturn relative to maximum drawdown | 3.93 | 1.01 | +2.92 |
Martin ratioReturn relative to average drawdown | 12.74 | 3.53 | +9.21 |
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 | TWCUX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.84 | 0.68 | +1.16 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.64 | 0.42 | +0.23 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.82 | 0.74 | +0.09 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.00 | 0.51 | -0.52 |
Correlation
The correlation between TWUSX and TWCUX is -0.03. 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
TWUSX vs. TWCUX - Dividend Comparison
TWUSX's dividend yield for the trailing twelve months is around 3.34%, less than TWCUX's 12.69% 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% |
TWCUX American Century Ultra Fund | 12.69% | 11.57% | 3.58% | 6.09% | 7.42% | 6.78% | 2.80% | 4.27% | 8.24% | 5.85% | 4.58% | 5.21% |
Drawdowns
TWUSX vs. TWCUX - Drawdown Comparison
The maximum TWUSX drawdown since its inception was -91.08%, which is greater than TWCUX's maximum drawdown of -62.11%. Use the drawdown chart below to compare losses from any high point for TWUSX and TWCUX.
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Drawdown Indicators
| TWUSX | TWCUX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -91.08% | -62.11% | -28.97% |
Max Drawdown (1Y)Largest decline over 1 year | -0.98% | -15.72% | +14.74% |
Max Drawdown (5Y)Largest decline over 5 years | -5.85% | -35.23% | +29.38% |
Max Drawdown (10Y)Largest decline over 10 years | -5.85% | -35.23% | +29.38% |
Current DrawdownCurrent decline from peak | -74.71% | -12.36% | -62.35% |
Average DrawdownAverage peak-to-trough decline | -81.79% | -16.86% | -64.93% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.30% | 4.49% | -4.19% |
Volatility
TWUSX vs. TWCUX - Volatility Comparison
The current volatility for American Century Short-Term Government Fund (TWUSX) is 0.52%, while American Century Ultra Fund (TWCUX) has a volatility of 7.21%. This indicates that TWUSX experiences smaller price fluctuations and is considered to be less risky than TWCUX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TWUSX | TWCUX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.52% | 7.21% | -6.69% |
Volatility (6M)Calculated over the trailing 6-month period | 1.12% | 13.26% | -12.14% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.94% | 23.37% | -21.43% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.28% | 22.59% | -20.31% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.80% | 22.03% | -20.23% |