AAAMX vs. BULIX

Last updated Aug 1, 2026

AAAMX (American Century One Choice Blend+ 2020 Portfolio) and BULIX (American Century Utilities Fund) are both mutual funds - AAAMX is a Target Retirement Date fund managed by American Century, while BULIX is a Utilities Equities fund managed by American Century. Over the past 5 years, AAAMX returned 4.04%/yr vs 8.36%/yr for BULIX. Their 0.48 correlation means their historical movements had little consistent relationship. AAAMX charges 0.57%/yr vs 0.65%/yr for BULIX.

Performance

AAAMX vs. BULIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century One Choice Blend+ 2020 Portfolio (AAAMX) and American Century Utilities Fund (BULIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AAAMX achieves a 4.58% return, which is significantly lower than BULIX's 6.99% return.

AAAMX

• 1D: 0.73%
• 1M: -0.09%
• 6M: 3.10%
• YTD: 4.58%
• 1Y: 9.99%
• 3Y*: 8.94%
• 5Y*: 4.04%
• 10Y*: —
• ALL TIME*: 4.73%

BULIX

• 1D: -0.61%
• 1M: -2.20%
• 6M: 4.60%
• YTD: 6.99%
• 1Y: 8.50%
• 3Y*: 14.59%
• 5Y*: 8.36%
• 10Y*: 6.47%
• ALL TIME*: 7.71%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
AAAMX American Century One Choice Blend+ 2020 Portfolio	$0.00	$0.00	$0.00
BULIX American Century Utilities Fund	$0.00	$0.00	$0.00

AAAMX vs. BULIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
AAAMX American Century One Choice Blend+ 2020 Portfolio	4.58%	11.63%	6.87%	10.81%	-13.19%	6.88%
BULIX American Century Utilities Fund	6.99%	16.76%	24.32%	-7.51%	-4.37%	17.03%

Correlation

The correlation between AAAMX and BULIX is 0.25, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.25
Correlation (3Y) Balances recent behavior with more history.	0.41
Correlation (5Y) Shows whether the relationship held over a longer period.	0.49
Correlation (All Time) Calculated using the full available price history since Mar 10, 2021	0.48

Over the past year, the correlation between AAAMX and BULIX has dropped to 0.25 - well below their long-term average of 0.48, suggesting their price drivers have been diverging.

Return for Risk

AAAMX vs. BULIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

AAAMX

AAAMX Risk / Return Rank: 70
AAAMX Sharpe Ratio Rank: 72
AAAMX Sortino Ratio Rank: 72
AAAMX Omega Ratio Rank: 71
AAAMX Calmar Ratio Rank: 61
AAAMX Martin Ratio Rank: 74

BULIX

BULIX Risk / Return Rank: 18
BULIX Sharpe Ratio Rank: 17
BULIX Sortino Ratio Rank: 17
BULIX Omega Ratio Rank: 17
BULIX Calmar Ratio Rank: 23
BULIX Martin Ratio Rank: 17

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

AAAMX vs. BULIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century One Choice Blend+ 2020 Portfolio (AAAMX) and American Century Utilities Fund (BULIX). 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.

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.

	AAAMX	BULIX	Difference
Sharpe ratio: Return per unit of total volatility	1.69	0.65	+1.04
Sortino ratio: Return per unit of downside risk	2.46	0.97	+1.49
Omega ratio: Gain probability vs. loss probability	1.31	1.12	+0.20
Calmar ratio: Return relative to maximum drawdown	2.08	1.04	+1.04
Martin ratio: Return relative to average drawdown	9.02	2.30	+6.73

AAAMX vs. BULIX - Sharpe Ratio Comparison

The current AAAMX Sharpe Ratio is 1.69, which is higher than the BULIX Sharpe Ratio of 0.65. The chart below compares the historical Sharpe Ratios of AAAMX and BULIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

AAAMX vs. BULIX - Drawdown Comparison

The maximum AAAMX drawdown since its inception was -19.03%, smaller than the maximum BULIX drawdown of -55.21%. Use the drawdown chart below to compare losses from any high point for AAAMX and BULIX.

Drawdown Indicators

	AAAMX	BULIX	Difference
Max Drawdown Largest peak-to-trough decline	-19.03%	-55.21%	+36.18%
Max Drawdown (1Y) Largest decline over 1 year	-4.72%	-8.93%	+4.21%
Max Drawdown (3Y) Largest decline over 3 years	-6.33%	-12.37%	+6.04%
Max Drawdown (5Y) Largest decline over 5 years	-19.03%	-24.56%	+5.53%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.86%	—
Current Drawdown Current decline from peak	-0.36%	-5.08%	+4.72%
Average Drawdown Average peak-to-trough decline	-4.71%	-10.00%	+5.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.09%	4.04%	-2.95%

Volatility

AAAMX vs. BULIX - Volatility Comparison

The current volatility for American Century One Choice Blend+ 2020 Portfolio (AAAMX) is 1.57%, while American Century Utilities Fund (BULIX) has a volatility of 4.59%. This indicates that AAAMX experiences smaller price fluctuations and is considered to be less risky than BULIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AAAMX	BULIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.57%	4.59%	-3.02%
Volatility (6M) Calculated over the trailing 6-month period	4.81%	11.49%	-6.68%
Volatility (1Y) Calculated over the trailing 1-year period	5.81%	14.32%	-8.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.72%	16.76%	-9.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.55%	18.10%	-10.55%

AAAMX vs. BULIX - Expense Ratio Comparison

AAAMX has a 0.57% expense ratio, which is lower than BULIX's 0.65% expense ratio.

Dividends

AAAMX vs. BULIX - Dividend Comparison

AAAMX's dividend yield for the trailing twelve months is around 2.92%, less than BULIX's 10.58% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AAAMX American Century One Choice Blend+ 2020 Portfolio	2.92%	5.13%	3.20%	2.10%	2.85%	2.28%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
BULIX American Century Utilities Fund	10.58%	11.60%	2.36%	2.65%	7.78%	7.50%	7.55%	2.97%	6.91%	7.70%	6.99%	5.87%

Frequently Asked Questions

Can I hold both AAAMX and BULIX in my portfolio?

AAAMX and BULIX have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AAAMX or BULIX?

BULIX has higher volatility (4.59%) compared to AAAMX (1.57%). In terms of maximum drawdown, AAAMX dropped -19.03% vs BULIX's -55.21%.

Which has better risk-adjusted returns?

AAAMX currently has the higher Sharpe Ratio (1.69 vs 0.65), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.