ARTOX vs. FCTKX

Last updated Jun 4, 2026

ARTOX (American Century Investments One Choice In Retirement Portfolio) and FCTKX (Fidelity Freedom 2055 Fund Class K6) are both Target Retirement Date funds. Over the past 5 years, ARTOX returned 4.52%/yr vs 10.71%/yr for FCTKX. Their correlation of 0.92 suggests significant overlap in exposure. ARTOX charges 0.74%/yr vs 0.50%/yr for FCTKX.

Performance

ARTOX vs. FCTKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Investments One Choice In Retirement Portfolio (ARTOX) and Fidelity Freedom 2055 Fund Class K6 (FCTKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ARTOX achieves a 4.33% return, which is significantly lower than FCTKX's 13.94% return.

ARTOX

• 1D: 0.15%
• 1M: 1.95%
• YTD: 4.33%
• 6M: 4.52%
• 1Y: 11.83%
• 3Y*: 9.59%
• 5Y*: 4.52%
• 10Y*: 6.23%

FCTKX

• 1D: 0.58%
• 1M: 5.18%
• YTD: 13.94%
• 6M: 15.86%
• 1Y: 31.62%
• 3Y*: 21.01%
• 5Y*: 10.71%
• 10Y*: —

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

ARTOX vs. FCTKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ARTOX American Century Investments One Choice In Retirement Portfolio	4.33%	10.88%	7.55%	11.09%	-13.24%	8.88%	10.66%	15.83%	-2.16%	3.69%
FCTKX Fidelity Freedom 2055 Fund Class K6	13.94%	24.06%	14.41%	20.84%	-18.09%	16.86%	18.53%	25.67%	-8.66%	9.78%

Correlation

The correlation between ARTOX and FCTKX 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	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (All Time) Calculated using the full available price history since Jun 16, 2017	0.92

The correlation between ARTOX and FCTKX has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

ARTOX vs. FCTKX — Risk / Return Rank

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

ARTOX

ARTOX Risk / Return Rank: 48
ARTOX Sharpe Ratio Rank: 48
ARTOX Sortino Ratio Rank: 50
ARTOX Omega Ratio Rank: 50
ARTOX Calmar Ratio Rank: 39
ARTOX Martin Ratio Rank: 50

FCTKX

FCTKX Risk / Return Rank: 73
FCTKX Sharpe Ratio Rank: 75
FCTKX Sortino Ratio Rank: 69
FCTKX Omega Ratio Rank: 70
FCTKX Calmar Ratio Rank: 72
FCTKX Martin Ratio Rank: 78

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.

ARTOX vs. FCTKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Investments One Choice In Retirement Portfolio (ARTOX) and Fidelity Freedom 2055 Fund Class K6 (FCTKX). 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.

	ARTOX	FCTKX	Difference
Sharpe ratio: Return per unit of total volatility	2.06	2.52	-0.46
Sortino ratio: Return per unit of downside risk	3.00	3.46	-0.46
Omega ratio: Gain probability vs. loss probability	1.39	1.47	-0.08
Calmar ratio: Return relative to maximum drawdown	2.37	3.30	-0.93
Martin ratio: Return relative to average drawdown	10.41	14.70	-4.29
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ARTOX vs. FCTKX - Sharpe Ratio Comparison

The current ARTOX Sharpe Ratio is 2.06, which is comparable to the FCTKX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of ARTOX and FCTKX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ARTOX	FCTKX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.06	2.52	-0.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.59	0.72	-0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.78	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.68	0.77	-0.09

Drawdowns

ARTOX vs. FCTKX - Drawdown Comparison

The maximum ARTOX drawdown since its inception was -27.66%, smaller than the maximum FCTKX drawdown of -30.94%. Use the drawdown chart below to compare losses from any high point for ARTOX and FCTKX.

Drawdown Indicators

	ARTOX	FCTKX	Difference
Max Drawdown Largest peak-to-trough decline	-27.66%	-30.94%	+3.28%
Max Drawdown (1Y) Largest decline over 1 year	-5.09%	-9.78%	+4.69%
Max Drawdown (3Y) Largest decline over 3 years	-7.22%	-15.40%	+8.18%
Max Drawdown (5Y) Largest decline over 5 years	-18.37%	-27.16%	+8.79%
Max Drawdown (10Y) Largest decline over 10 years	-18.80%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-3.01%	-5.46%	+2.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.16%	2.18%	-1.02%

Volatility

ARTOX vs. FCTKX - Volatility Comparison

The current volatility for American Century Investments One Choice In Retirement Portfolio (ARTOX) is 1.82%, while Fidelity Freedom 2055 Fund Class K6 (FCTKX) has a volatility of 4.27%. This indicates that ARTOX experiences smaller price fluctuations and is considered to be less risky than FCTKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ARTOX	FCTKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.82%	4.27%	-2.45%
Volatility (6M) Calculated over the trailing 6-month period	4.75%	10.54%	-5.79%
Volatility (1Y) Calculated over the trailing 1-year period	5.86%	12.80%	-6.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.77%	15.05%	-7.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.06%	15.89%	-7.83%

ARTOX vs. FCTKX - Expense Ratio Comparison

ARTOX has a 0.74% expense ratio, which is higher than FCTKX's 0.50% expense ratio.

Dividends

ARTOX vs. FCTKX - Dividend Comparison

ARTOX's dividend yield for the trailing twelve months is around 8.37%, more than FCTKX's 5.14% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ARTOX American Century Investments One Choice In Retirement Portfolio	8.37%	8.88%	4.03%	4.31%	5.22%	7.75%	5.36%	7.37%	8.61%	2.03%	3.00%	4.39%
FCTKX Fidelity Freedom 2055 Fund Class K6	5.14%	4.06%	2.31%	2.19%	11.70%	11.47%	4.40%	6.53%	7.08%	2.74%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ARTOX and FCTKX in my portfolio?

With a correlation of 0.93, ARTOX and FCTKX 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, ARTOX or FCTKX?

FCTKX has higher volatility (4.27%) compared to ARTOX (1.82%). In terms of maximum drawdown, ARTOX dropped -27.66% vs FCTKX's -30.94%.

Which has better risk-adjusted returns?

FCTKX currently has the higher Sharpe Ratio (2.52 vs 2.06), 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.