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American Century Ultra Fund Class R6 (AULDX)
Performance
Return for Risk
Dividends
Drawdowns
Volatility

Fund Info

ISIN
US02508H4442
CUSIP
02508H444
Inception Date
Jul 26, 2013
Index Tracked
No Index (Active)
Distribution Policy
Distributing
Asset Class
Equity
Asset Class Size
Large-Cap
Asset Class Style
Growth

Share Price Chart


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Performance

Performance Chart

The chart shows the growth of an initial investment of $10,000 in American Century Ultra Fund Class R6, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.


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S&P 500 Index

Returns By Period

American Century Ultra Fund Class R6 (AULDX) has returned -12.21% so far this year and 11.88% over the past 12 months. Looking at the last ten years, AULDX has achieved an annualized return of 16.09%, outperforming the S&P 500 Index benchmark, which averaged 12.16% per year.


American Century Ultra Fund Class R6

1D
-0.65%
1M
-8.77%
YTD
-12.21%
6M
-10.72%
1Y
11.88%
3Y*
16.86%
5Y*
9.28%
10Y*
16.09%

Benchmark (S&P 500 Index)

1D
2.91%
1M
-5.09%
YTD
-4.63%
6M
-2.39%
1Y
16.33%
3Y*
16.69%
5Y*
10.18%
10Y*
12.16%
*Multi-year figures are annualized to reflect compound growth (CAGR)

Monthly Returns

Based on dividend-adjusted daily data since Jan 2, 2014, AULDX's average daily return is +0.06%, while the average monthly return is +1.26%. At this rate, your investment would double in approximately 4.6 years.

Historically, 64% of months were positive and 36% were negative. The best month was Apr 2020 with a return of +16.0%, while the worst month was Apr 2022 at -13.1%. The longest winning streak lasted 15 consecutive months, and the longest losing streak was 5 months.

On a daily basis, AULDX closed higher 55% 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 -12.7%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026-0.51%-3.29%-8.77%-12.21%
20251.82%-4.74%-8.54%1.15%8.55%5.55%2.09%1.33%4.54%4.99%-1.91%-1.25%13.05%
20242.08%6.85%1.76%-3.66%6.37%6.34%-2.60%1.94%2.12%-0.64%6.50%0.18%29.99%
20239.69%-1.69%7.83%0.92%5.54%6.54%2.86%-1.76%-5.61%-2.46%11.57%5.02%43.86%
2022-8.85%-4.47%4.05%-13.05%-3.40%-9.09%14.42%-5.75%-9.34%5.77%4.43%-9.18%-32.15%
2021-1.62%1.00%0.77%7.86%-2.39%6.86%3.93%3.52%-5.57%7.75%-0.97%1.46%23.89%

Benchmark Metrics

American Century Ultra Fund Class R6 has an annualized alpha of 2.36%, beta of 1.14, and R² of 0.90 versus S&P 500 Index. Calculated based on daily prices since January 03, 2014.

  • This fund captured 123.73% of S&P 500 Index gains and 107.67% of its losses — amplifying both gains and losses, but participating more in upside than downside.
  • This fund generated an annualized alpha of 2.36% versus S&P 500 Index — delivering returns beyond what market exposure alone would predict.
  • With beta of 1.14 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
2.36%
Beta
1.14
0.90
Upside Capture
123.73%
Downside Capture
107.67%

Expense Ratio

AULDX has an expense ratio of 0.52%, placing it in the medium range.


Return for Risk

Risk / Return Rank

AULDX ranks 19 for risk / return — in the bottom 19% 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.


AULDX Risk / Return Rank: 1919
Overall Rank
AULDX Sharpe Ratio Rank: 1818
Sharpe Ratio Rank
AULDX Sortino Ratio Rank: 2020
Sortino Ratio Rank
AULDX Omega Ratio Rank: 1919
Omega Ratio Rank
AULDX Calmar Ratio Rank: 1818
Calmar Ratio Rank
AULDX Martin Ratio Rank: 1818
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

Return / Risk — by metrics

The table below present risk-adjusted performance metrics for American Century Ultra Fund Class R6 (AULDX) and compare them to a chosen benchmark (S&P 500 Index).


AULDXBenchmarkDifference

Sharpe ratio

Return per unit of total volatility

0.51

0.90

-0.38

Sortino ratio

Return per unit of downside risk

0.91

1.39

-0.48

Omega ratio

Gain probability vs. loss probability

1.12

1.21

-0.09

Calmar ratio

Return relative to maximum drawdown

0.56

1.40

-0.84

Martin ratio

Return relative to average drawdown

1.98

6.61

-4.63

Explore AULDX risk-adjusted metrics in detail

Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.

Dividends

Dividend History

American Century Ultra Fund Class R6 provided a 12.07% dividend yield over the last twelve months, with an annual payout of $10.89 per share.


2.00%4.00%6.00%8.00%10.00%$0.00$2.00$4.00$6.00$8.00$10.0020152016201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018201720162015
Dividend$10.89$10.89$3.34$4.54$4.09$5.94$2.12$2.28$3.33$2.77$1.60$1.82

Dividend yield

12.07%10.60%3.32%5.68%6.97%6.42%2.67%4.18%7.94%6.19%4.45%5.06%

Monthly Dividends

The table displays the monthly dividend distributions for American Century Ultra Fund Class R6. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$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 Class R6. 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 Class R6 was 35.03%, occurring on Oct 14, 2022. Recovery took 322 trading sessions.

The current American Century Ultra Fund Class R6 drawdown is 15.60%.


Depth

Start

To Bottom

Bottom

To Recover

End

Total

-35.03%Nov 19, 2021227Oct 14, 2022322Jan 29, 2024549
-31.91%Feb 20, 202023Mar 23, 202052Jun 5, 202075
-24.78%Dec 12, 202479Apr 8, 202574Jul 25, 2025153
-22.94%Sep 28, 201860Dec 24, 201873Apr 10, 2019133
-17.46%Jul 21, 2015143Feb 11, 2016128Aug 15, 2016271

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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