VASIX vs. AONIX

Last updated Jun 24, 2026

VASIX (Vanguard LifeStrategy Income Fund) and AONIX (American Century Investments One Choice Portfolio: Very Conservative) are both Diversified Portfolio funds. Over the past 10 years, VASIX returned 4.09%/yr vs 4.57%/yr for AONIX. Their correlation of 0.89 suggests significant overlap in exposure. VASIX charges 0.11%/yr vs 0.00%/yr for AONIX.

Performance

VASIX vs. AONIX - Performance Comparison

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

Returns By Period

In the year-to-date period, VASIX achieves a 2.95% return, which is significantly higher than AONIX's 2.47% return. Over the past 10 years, VASIX has underperformed AONIX with an annualized return of 4.09%, while AONIX has yielded a comparatively higher 4.57% annualized return.

VASIX

• 1D: -0.25%
• 1M: 0.81%
• YTD: 2.95%
• 6M: 2.95%
• 1Y: 8.55%
• 3Y*: 8.06%
• 5Y*: 2.80%
• 10Y*: 4.09%

AONIX

• 1D: -0.25%
• 1M: 0.39%
• YTD: 2.47%
• 6M: 2.30%
• 1Y: 7.20%
• 3Y*: 6.78%
• 5Y*: 2.79%
• 10Y*: 4.57%

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

VASIX vs. AONIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VASIX Vanguard LifeStrategy Income Fund	2.95%	9.42%	6.67%	9.63%	-13.94%	1.92%	9.13%	12.05%	-1.05%	6.05%
AONIX American Century Investments One Choice Portfolio: Very Conservative	2.47%	7.52%	5.92%	7.60%	-11.35%	6.63%	9.43%	11.96%	-0.93%	6.46%

Correlation

The correlation between VASIX and AONIX is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Oct 1, 2004	0.89

The correlation between VASIX and AONIX has been stable across timeframes, ranging from 0.87 to 0.93 - a consistent structural relationship.

Return for Risk

VASIX vs. AONIX — Risk / Return Rank

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

VASIX

VASIX Risk / Return Rank: 49
VASIX Sharpe Ratio Rank: 50
VASIX Sortino Ratio Rank: 52
VASIX Omega Ratio Rank: 55
VASIX Calmar Ratio Rank: 39
VASIX Martin Ratio Rank: 48

AONIX

AONIX Risk / Return Rank: 47
AONIX Sharpe Ratio Rank: 48
AONIX Sortino Ratio Rank: 51
AONIX Omega Ratio Rank: 50
AONIX Calmar Ratio Rank: 37
AONIX Martin Ratio Rank: 50

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.

VASIX vs. AONIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard LifeStrategy Income Fund (VASIX) and American Century Investments One Choice Portfolio: Very Conservative (AONIX). 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.

	VASIX	AONIX	Difference
Sharpe ratio: Return per unit of total volatility	1.92	1.89	+0.03
Sortino ratio: Return per unit of downside risk	2.79	2.75	+0.04
Omega ratio: Gain probability vs. loss probability	1.38	1.36	+0.02
Calmar ratio: Return relative to maximum drawdown	2.27	2.19	+0.09
Martin ratio: Return relative to average drawdown	9.38	9.67	-0.29

VASIX vs. AONIX - Sharpe Ratio Comparison

The current VASIX Sharpe Ratio is 1.92, which is comparable to the AONIX Sharpe Ratio of 1.89. The chart below compares the historical Sharpe Ratios of VASIX and AONIX, 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

VASIX vs. AONIX - Drawdown Comparison

The maximum VASIX drawdown since its inception was -18.17%, which is greater than AONIX's maximum drawdown of -15.27%. Use the drawdown chart below to compare losses from any high point for VASIX and AONIX.

Drawdown Indicators

	VASIX	AONIX	Difference
Max Drawdown Largest peak-to-trough decline	-18.17%	-15.27%	-2.90%
Max Drawdown (1Y) Largest decline over 1 year	-3.90%	-3.51%	-0.39%
Max Drawdown (3Y) Largest decline over 3 years	-5.58%	-5.08%	-0.50%
Max Drawdown (5Y) Largest decline over 5 years	-18.17%	-15.27%	-2.90%
Max Drawdown (10Y) Largest decline over 10 years	-18.17%	-15.27%	-2.90%
Current Drawdown Current decline from peak	-0.25%	-0.50%	+0.25%
Average Drawdown Average peak-to-trough decline	-1.92%	-1.98%	+0.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.94%	0.79%	+0.15%

Volatility

VASIX vs. AONIX - Volatility Comparison

Vanguard LifeStrategy Income Fund (VASIX) has a higher volatility of 1.76% compared to American Century Investments One Choice Portfolio: Very Conservative (AONIX) at 1.51%. This indicates that VASIX's price experiences larger fluctuations and is considered to be riskier than AONIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VASIX	AONIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.76%	1.51%	+0.25%
Volatility (6M) Calculated over the trailing 6-month period	3.92%	3.28%	+0.64%
Volatility (1Y) Calculated over the trailing 1-year period	4.63%	4.08%	+0.55%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.79%	5.42%	+0.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.95%	5.27%	-0.32%

VASIX vs. AONIX - Expense Ratio Comparison

VASIX has a 0.11% expense ratio, which is higher than AONIX's 0.00% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VASIX vs. AONIX - Dividend Comparison

VASIX's dividend yield for the trailing twelve months is around 4.12%, less than AONIX's 4.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AONIX American Century Investments One Choice Portfolio: Very Conservative	4.47%	3.82%	3.10%	2.80%	7.19%	6.36%	3.46%	3.57%	5.83%	3.08%	2.16%	2.79%
VASIX Vanguard LifeStrategy Income Fund	4.12%	4.18%	7.61%	3.17%	2.02%	3.95%	2.15%	2.73%	3.55%	1.52%	2.26%	2.57%

Frequently Asked Questions

Can I hold both VASIX and AONIX in my portfolio?

With a correlation of 0.93, VASIX and AONIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, VASIX or AONIX?

VASIX has higher volatility (1.76%) compared to AONIX (1.51%). In terms of maximum drawdown, VASIX dropped -18.17% vs AONIX's -15.27%.

Which has better risk-adjusted returns?

VASIX currently has the higher Sharpe Ratio (1.92 vs 1.89), 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.