- ISIN
- US0250815067
- CUSIP
- 025081506
- Issuer
- American Century
- Inception Date
- Dec 14, 1982
- Category
- Government Bonds
- Min. Investment
- $2,500
- Distribution Policy
- Distributing
- Asset Class
- Bond
- Assets Under Management
- $185M
Share Price Chart
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Performance
TWUSX Performance Chart
American Century Short-Term Government Fund (TWUSX) is up 0.3% since the beginning of the year. TWUSX is currently trading at $9 per share. Investors who bought $1,000 worth of TWUSX shares 5 years ago would now be looking at an investment worth $1,078.
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Returns By Period
American Century Short-Term Government Fund (TWUSX) has returned 0.25% so far this year and 3.07% over the past 12 months. Over the last ten years, TWUSX has returned 1.48% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.
American Century Short-Term Government Fund
- 1D
- 0.11%
- 1M
- 0.32%
- YTD
- 0.25%
- 6M
- 0.55%
- 1Y
- 3.07%
- 3Y*
- 3.95%
- 5Y*
- 1.52%
- 10Y*
- 1.48%
Benchmark (S&P 500 Index)
- 1D
- -0.37%
- 1M
- -0.01%
- YTD
- 9.16%
- 6M
- 8.64%
- 1Y
- 25.22%
- 3Y*
- 19.78%
- 5Y*
- 11.99%
- 10Y*
- 13.88%
TWUSX Monthly Returns History
Based on dividend-adjusted daily data since Dec 15, 1982, TWUSX's average daily return is +2.02%, while the average monthly return is +4.80%. At this rate, an investment would double in approximately 1.2 years.
Historically, 65% of months were positive and 35% were negative. The best month was Jul 1992 with a return of +921.0%, while the worst month was Jun 1985 at -90.0%. The longest winning streak lasted 21 consecutive months, and the longest losing streak was 9 months.
On a daily basis, TWUSX closed higher 27% of trading days. The best single day was Jul 31, 1992 with a return of +904.8%, while the worst single day was Feb 28, 1985 at -90.1%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.18% | 0.50% | -0.37% | 0.18% | -0.01% | -0.22% | 0.25% | ||||||
| 2025 | 0.33% | 0.75% | 0.33% | 0.86% | -0.21% | 0.64% | -0.02% | 0.86% | 0.30% | 0.30% | 0.40% | 0.30% | 4.94% |
| 2024 | 0.23% | -0.45% | 0.24% | -0.43% | 0.72% | 0.55% | 1.24% | 0.91% | 0.75% | -0.76% | 0.33% | 0.21% | 3.59% |
| 2023 | 0.68% | -0.74% | 1.64% | 0.16% | -0.44% | -0.74% | 0.20% | 0.35% | -0.19% | 0.27% | 1.25% | 1.25% | 3.70% |
| 2022 | -0.60% | -0.39% | -1.30% | -0.44% | 0.34% | -0.74% | 0.21% | -0.73% | -1.18% | -0.15% | 0.56% | 0.05% | -4.31% |
| 2021 | 0.10% | 0.10% | 0.05% | 0.17% | 0.06% | -0.23% | 0.23% | -0.07% | -0.09% | -0.10% | -0.20% | -0.11% | -0.09% |
Benchmark Metrics
American Century Short-Term Government Fund has an annualized alpha of 14728.78%, beta of 0.39, and R2 of 0.00 versus S&P 500 Index. Calculated based on daily prices since December 15, 1982.
- This fund participated in 66.87% of S&P 500 Index downside but only 25.78% of its upside - more exposed to losses than it benefited from rallies.
- Beta of 0.39 may look defensive, but with R2 of 0.00 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 0.00 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
- 14,728.78%
- Beta
- 0.39
- R²
- 0.00
- Upside Capture
- 25.78%
- Downside Capture
- 66.87%
Expense Ratio
TWUSX has an expense ratio of 0.55%, placing it in the medium range.
Return for Risk
Risk / Return Rank
TWUSX ranks 58 for risk / return — on par with similar mutual funds. You're getting a typical balance of risk and reward. Not a standout, but not a red flag either — a reasonable choice if other factors align with your goals.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for American Century Short-Term Government Fund (TWUSX) and compare them to S&P 500 Index.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| TWUSX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.32 | ||
| Sortino ratioReturn per unit of downside risk | +0.27 | ||
| Omega ratioGain probability vs. loss probability | 1.38 | 1.37 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 3.16 | 2.78 | +0.37 |
| Martin ratioReturn relative to average drawdown | 10.64 | 12.44 | -1.80 |
Dividends
Dividend History
American Century Short-Term Government Fund provided a 3.60% dividend yield over the last twelve months, with an annual payout of $0.33 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.33 | $0.34 | $0.37 | $0.35 | $0.10 | $0.10 | $0.07 | $0.17 | $0.16 | $0.10 | $0.06 | $0.05 |
Dividend yield | 3.60% | 3.70% | 4.06% | 3.83% | 1.12% | 1.05% | 0.72% | 1.81% | 1.74% | 1.06% | 0.57% | 0.53% |
Monthly Dividends
The table displays the monthly dividend distributions for American Century Short-Term Government Fund. 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 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.00 | $0.13 | ||||||
| 2025 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.34 |
| 2024 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.37 |
| 2023 | $0.02 | $0.02 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.35 |
| 2022 | $0.00 | $0.00 | $0.01 | $0.01 | $0.01 | $0.00 | $0.00 | $0.01 | $0.00 | $0.02 | $0.02 | $0.03 | $0.10 |
| 2021 | $0.00 | $0.00 | $0.01 | $0.01 | $0.01 | $0.01 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.07 | $0.10 |
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 American Century Short-Term Government Fund. 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 American Century Short-Term Government Fund was 91.06%, occurring on Apr 26, 1990. Recovery took 568 trading sessions.
The current American Century Short-Term Government Fund drawdown is 64.66%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
1990 bear market1990 | -91.06%Apr 1990 | 4y 4mo | 2y 3mo | 6y 7moDec 1985 - Jul 1992 |
1984 bear market1984 | -90.75%Jun 1984 | 1y 5mo | 1y 5mo | 2y 11moJan 1983 - Dec 1985 |
1985 bear market1985 | -90.02%Dec 1985 | 0s | 4d | 4dDec 1985 - Dec 1985 |
1992 bear market1992 | -90.00%Aug 1992 | 0s | — | 33y 11moAug 1992 - now |
1992 pullback1992 | -2.06%Aug 1992 | 0s | 1d | 1dAug 1992 - Aug 1992 |
Drawdown Indicators
| TWUSX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -91.06% | -56.78% | -34.28% |
Max Drawdown (1Y)Largest decline over 1 year | -0.98% | -9.10% | +8.12% |
Max Drawdown (3Y)Largest decline over 3 years | -1.09% | -18.90% | +17.81% |
Max Drawdown (5Y)Largest decline over 5 years | -5.81% | -25.43% | +19.62% |
Max Drawdown (10Y)Largest decline over 10 years | -5.85% | -33.92% | +28.07% |
Current DrawdownCurrent decline from peak | -64.66% | -1.80% | -62.86% |
Average DrawdownAverage peak-to-trough decline | -76.91% | -10.71% | -66.20% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.29% | 2.03% | -1.74% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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