- ISIN
- US0250838747
- Issuer
- American Century
- Region
- North America (U.S.)
- Category
- Large Cap Growth Equities
- Index Tracked
- No Index (Active)
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Large-Cap
- Asset Class Style
- Growth
Highlights
- Avg. Volume (1M)
- 0
- Avg. Volume Value (1M)
- $0.00
Share Price Chart
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Performance
TWUIX Performance Chart
American Century Ultra Fund I Class (TWUIX) is up 0.5% since the beginning of the year. TWUIX is currently trading at $102 per share. Investors who bought $1,000 worth of TWUIX shares 5 years ago would now be looking at an investment worth $1,490.
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Returns By Period
American Century Ultra Fund I Class (TWUIX) has returned 0.54% so far this year and 8.96% over the past 12 months. Looking at the last ten years, TWUIX has achieved an annualized return of 17.10%, outperforming the S&P 500 Index benchmark, which averaged 13.07% per year.
American Century Ultra Fund I Class
- 1D
- -2.19%
- 1M
- -1.08%
- 6M
- 0.81%
- YTD
- 0.54%
- 1Y
- 8.96%
- 3Y*
- 16.60%
- 5Y*
- 8.30%
- 10Y*
- 17.10%
- ALL TIME*
- 9.87%
Benchmark (S&P 500 Index)
- 1D
- 0.05%
- 1M
- 0.73%
- 6M
- 7.18%
- YTD
- 8.28%
- 1Y
- 16.48%
- 3Y*
- 17.51%
- 5Y*
- 10.93%
- 10Y*
- 13.07%
- ALL TIME*
- 8.07%
TWUIX Monthly Returns History
Based on dividend-adjusted daily data since Nov 14, 1996, TWUIX's average daily return is +0.05%, while the average monthly return is +0.93%. At this rate, an investment would double in approximately 6.2 years.
Historically, 61% of months were positive and 39% were negative. The best month was Apr 2020 with a return of +16.0%, while the worst month was Aug 1998 at -18.2%. The longest winning streak lasted 13 consecutive months, and the longest losing streak was 5 months.
On a daily basis, TWUIX closed higher 53% of trading days. The best single day was Apr 9, 2025 with a return of +12.1%, while the worst single day was Mar 16, 2020 at -12.8%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -0.51% | -3.31% | -5.13% | 12.50% | 6.45% | -3.55% | -4.62% | 0.54% | |||||
| 2025 | 1.81% | -4.75% | -8.55% | 1.13% | 8.54% | 5.54% | 2.07% | 1.30% | 4.53% | 4.98% | -1.92% | -1.27% | 12.88% |
| 2024 | 2.07% | 6.84% | 1.74% | -3.67% | 6.36% | 6.32% | -2.60% | 1.92% | 2.11% | -0.66% | 6.49% | 0.16% | 29.80% |
| 2023 | 9.68% | -1.71% | 7.82% | 0.92% | 5.53% | 6.52% | 2.85% | -1.76% | -5.62% | -2.48% | 11.56% | 4.99% | 43.63% |
| 2022 | -8.86% | -4.47% | 4.03% | -13.06% | -3.41% | -9.10% | 14.40% | -5.76% | -9.36% | 5.78% | 4.40% | -9.19% | -32.25% |
| 2021 | -1.63% | 0.97% | 0.77% | 7.83% | -2.41% | 6.84% | 3.92% | 3.51% | -5.59% | 7.74% | -0.98% | 1.44% | 23.70% |
Benchmark Metrics
American Century Ultra Fund I Class has an annualized alpha of 1.56%, beta of 1.05, and R2 of 0.90 versus S&P 500 Index. Calculated based on daily prices since November 14, 1996.
- This fund captured 116.36% of S&P 500 Index gains and 107.48% of its losses - amplifying both gains and losses, but participating more in upside than downside.
- With beta of 1.05 and R2 of 0.90, this fund moves broadly in line with S&P 500 Index - much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 1.56%
- Beta
- 1.05
- R²
- 0.90
- Upside Capture
- 116.36%
- Downside Capture
- 107.48%
Expense Ratio
TWUIX has an expense ratio of 0.67%, placing it in the medium range.
Return for Risk
Risk / Return Rank
TWUIX ranks 13 for risk / return — in the bottom 13% of mutual funds on our site. This means you're taking on significantly more risk than the returns justify. Consider whether the potential upside is worth the volatility, or explore alternatives with better risk / return profiles.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for American Century Ultra Fund I Class (TWUIX) 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.
| TWUIX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.80 | ||
| Sortino ratioReturn per unit of downside risk | -1.04 | ||
| Omega ratioGain probability vs. loss probability | 1.10 | 1.24 | -0.14 |
| Calmar ratioReturn relative to maximum drawdown | 0.57 | 1.82 | -1.24 |
| Martin ratioReturn relative to average drawdown | 1.82 | 7.79 | -5.98 |
Dividends
Dividend History
American Century Ultra Fund I Class provided a 10.70% dividend yield over the last twelve months, with an annual payout of $10.89 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $10.89 | $10.89 | $3.34 | $4.54 | $4.09 | $5.94 | $2.12 | $2.23 | $3.33 | $2.54 | $1.60 | $1.82 |
Dividend yield | 10.70% | 10.76% | 3.36% | 5.73% | 7.03% | 6.46% | 2.68% | 4.10% | 7.94% | 5.66% | 4.44% | 5.06% |
Monthly Dividends
The table displays the monthly dividend distributions for American Century Ultra Fund I Class. 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 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | |||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $10.89 | $10.89 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $3.34 | $3.34 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $4.54 | $4.54 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $4.09 | $4.09 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $5.94 | $5.94 |
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 Ultra Fund I Class. 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 Ultra Fund I Class was 61.41%, occurring on Mar 9, 2009. Recovery took 1095 trading sessions.
The current American Century Ultra Fund I Class drawdown is 8.76%.
Drawdown | Fall | Recovery | Underwater | Related event |
|---|---|---|---|---|
-61.41%Mar 2009 | 8y 11mo | 4y 4mo | 13y 3moMar 2000 - Jul 2013 | Financial crisis2007–2009 |
-35.12%Oct 2022 | 10mo 29d | 1y 3mo | 2y 2moNov 2021 - Feb 2024 | Bear market2022 |
-31.93%Mar 2020 | 1mo 2d | 2mo 14d | 3mo 16dFeb 2020 - Jun 2020 | COVID crash2020 |
-26.26%Oct 1998 | 2mo 19d | 2mo 22d | 5mo 11dJul 1998 - Dec 1998 | — |
-24.82%Apr 2025 | 3mo 27d | 3mo 18d | 7mo 15dDec 2024 - Jul 2025 | 2025 selloff2025 |
Drawdown Indicators
| TWUIX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -61.41% | -56.78% | -4.63% |
Max Drawdown (1Y)Largest decline over 1 year | -15.64% | -9.10% | -6.54% |
Max Drawdown (3Y)Largest decline over 3 years | -24.82% | -18.90% | -5.92% |
Max Drawdown (5Y)Largest decline over 5 years | -35.12% | -25.43% | -9.69% |
Max Drawdown (10Y)Largest decline over 10 years | -35.12% | -33.92% | -1.20% |
Current DrawdownCurrent decline from peak | -8.76% | -2.60% | -6.16% |
Average DrawdownAverage peak-to-trough decline | -18.08% | -10.70% | -7.38% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.93% | 2.12% | +2.81% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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