AONIX vs. AOMIX

Last updated Apr 1, 2026

Compare and contrast key facts about American Century Investments One Choice Portfolio: Very Conservative (AONIX) and American Century Investments One Choice Portfolio: Moderate (AOMIX).

AONIX is managed by American Century. It was launched on Sep 29, 2004. AOMIX is managed by American Century. It was launched on Sep 29, 2004.

Performance

AONIX vs. AOMIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Investments One Choice Portfolio: Very Conservative (AONIX) and American Century Investments One Choice Portfolio: Moderate (AOMIX). The values are adjusted to include any dividend payments, if applicable.

AONIX vs. AOMIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AONIX American Century Investments One Choice Portfolio: Very Conservative	-1.31%	7.52%	5.92%	7.60%	-11.35%	6.63%	9.43%	11.96%	-0.93%	6.46%
AOMIX American Century Investments One Choice Portfolio: Moderate	-3.27%	12.97%	10.07%	13.04%	-16.37%	11.82%	16.08%	20.14%	-5.23%	14.27%

Returns By Period

In the year-to-date period, AONIX achieves a -1.31% return, which is significantly higher than AOMIX's -3.27% return. Over the past 10 years, AONIX has underperformed AOMIX with an annualized return of 4.26%, while AOMIX has yielded a comparatively higher 7.29% annualized return.

AONIX

• 1D: 0.26%
• 1M: -3.26%
• YTD: -1.31%
• 6M: -0.38%
• 1Y: 5.04%
• 3Y*: 5.42%
• 5Y*: 2.53%
• 10Y*: 4.26%

AOMIX

• 1D: 0.00%
• 1M: -6.68%
• YTD: -3.27%
• 6M: -1.76%
• 1Y: 9.57%
• 3Y*: 8.94%
• 5Y*: 4.31%
• 10Y*: 7.29%

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

AONIX vs. AOMIX - Expense Ratio Comparison

AONIX has a 0.00% expense ratio, which is lower than AOMIX's 0.00% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

AONIX

American Century Investments One Choice Portfolio: Very Conservative

AOMIX

American Century Investments One Choice Portfolio: Moderate

Return for Risk

AONIX vs. AOMIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AONIX

AONIX Risk / Return Rank: 60
AONIX Sharpe Ratio Rank: 61
AONIX Sortino Ratio Rank: 59
AONIX Omega Ratio Rank: 57
AONIX Calmar Ratio Rank: 64
AONIX Martin Ratio Rank: 60

AOMIX

AOMIX Risk / Return Rank: 46
AOMIX Sharpe Ratio Rank: 46
AOMIX Sortino Ratio Rank: 45
AOMIX Omega Ratio Rank: 45
AOMIX Calmar Ratio Rank: 44
AOMIX Martin Ratio Rank: 48

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.

AONIX vs. AOMIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Investments One Choice Portfolio: Very Conservative (AONIX) and American Century Investments One Choice Portfolio: Moderate (AOMIX). 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.

	AONIX	AOMIX	Difference
Sharpe ratio Return per unit of total volatility	1.09	0.91	+0.18
Sortino ratio Return per unit of downside risk	1.53	1.32	+0.20
Omega ratio Gain probability vs. loss probability	1.22	1.19	+0.03
Calmar ratio Return relative to maximum drawdown	1.47	1.11	+0.36
Martin ratio Return relative to average drawdown	5.76	4.79	+0.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AONIX vs. AOMIX - Sharpe Ratio Comparison

The current AONIX Sharpe Ratio is 1.09, which is comparable to the AOMIX Sharpe Ratio of 0.91. The chart below compares the historical Sharpe Ratios of AONIX and AOMIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	AONIX	AOMIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.09	0.91	+0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.47	0.41	+0.06
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.82	0.65	+0.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.84	0.56	+0.28

Correlation

The correlation between AONIX and AOMIX is 0.88, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

AONIX vs. AOMIX - Dividend Comparison

AONIX's dividend yield for the trailing twelve months is around 3.69%, less than AOMIX's 6.84% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AONIX American Century Investments One Choice Portfolio: Very Conservative	3.69%	3.82%	3.10%	2.80%	7.19%	6.36%	3.46%	3.57%	5.83%	3.08%	2.16%	2.79%
AOMIX American Century Investments One Choice Portfolio: Moderate	6.84%	6.69%	2.53%	2.29%	10.49%	9.55%	8.48%	6.61%	8.27%	2.11%	3.64%	7.11%

Drawdowns

AONIX vs. AOMIX - Drawdown Comparison

The maximum AONIX drawdown since its inception was -15.27%, smaller than the maximum AOMIX drawdown of -38.62%. Use the drawdown chart below to compare losses from any high point for AONIX and AOMIX.

Drawdown Indicators

	AONIX	AOMIX	Difference
Max Drawdown Largest peak-to-trough decline	-15.27%	-38.62%	+23.35%
Max Drawdown (1Y) Largest decline over 1 year	-3.55%	-7.86%	+4.31%
Max Drawdown (5Y) Largest decline over 5 years	-15.27%	-23.24%	+7.97%
Max Drawdown (10Y) Largest decline over 10 years	-15.27%	-24.91%	+9.64%
Current Drawdown Current decline from peak	-3.26%	-6.91%	+3.65%
Average Drawdown Average peak-to-trough decline	-1.99%	-4.94%	+2.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.91%	1.82%	-0.91%

Volatility

AONIX vs. AOMIX - Volatility Comparison

The current volatility for American Century Investments One Choice Portfolio: Very Conservative (AONIX) is 1.67%, while American Century Investments One Choice Portfolio: Moderate (AOMIX) has a volatility of 3.51%. This indicates that AONIX experiences smaller price fluctuations and is considered to be less risky than AOMIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AONIX	AOMIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.67%	3.51%	-1.84%
Volatility (6M) Calculated over the trailing 6-month period	2.70%	6.05%	-3.35%
Volatility (1Y) Calculated over the trailing 1-year period	4.82%	10.61%	-5.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.36%	10.45%	-5.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.23%	11.24%	-6.01%