ATTIX vs. SSFNX

Last updated Jun 4, 2026

ATTIX (American Century One Choice In Retirement Portfolio Class I) and SSFNX (State Street Target Retirement Fund) are both Target Retirement Date funds. Over the past 10 years, ATTIX returned 5.99%/yr vs 5.89%/yr for SSFNX. Their correlation of 0.94 suggests significant overlap in exposure. ATTIX charges 0.56%/yr vs 0.10%/yr for SSFNX.

Performance

ATTIX vs. SSFNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century One Choice In Retirement Portfolio Class I (ATTIX) and State Street Target Retirement Fund (SSFNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ATTIX achieves a 4.45% return, which is significantly lower than SSFNX's 5.58% return. Both investments have delivered pretty close results over the past 10 years, with ATTIX having a 5.99% annualized return and SSFNX not far behind at 5.89%.

ATTIX

• 1D: 0.15%
• 1M: 1.95%
• YTD: 4.45%
• 6M: 4.62%
• 1Y: 12.13%
• 3Y*: 9.81%
• 5Y*: 4.73%
• 10Y*: 5.99%

SSFNX

• 1D: 0.17%
• 1M: 1.53%
• YTD: 5.58%
• 6M: 5.73%
• 1Y: 13.09%
• 3Y*: 9.93%
• 5Y*: 4.57%
• 10Y*: 5.89%

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

ATTIX vs. SSFNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ATTIX American Century One Choice In Retirement Portfolio Class I	4.45%	11.10%	7.76%	11.31%	-13.07%	9.10%	6.28%	16.06%	-1.91%	9.19%
SSFNX State Street Target Retirement Fund	5.58%	10.93%	7.05%	10.73%	-12.21%	6.87%	10.26%	13.97%	-2.49%	8.92%

Correlation

The correlation between ATTIX and SSFNX 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	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Oct 2, 2014	0.94

The correlation between ATTIX and SSFNX has been stable across timeframes, ranging from 0.93 to 0.96 - a consistent structural relationship.

Return for Risk

ATTIX vs. SSFNX — Risk / Return Rank

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

ATTIX

ATTIX Risk / Return Rank: 49
ATTIX Sharpe Ratio Rank: 50
ATTIX Sortino Ratio Rank: 52
ATTIX Omega Ratio Rank: 51
ATTIX Calmar Ratio Rank: 40
ATTIX Martin Ratio Rank: 53

SSFNX

SSFNX Risk / Return Rank: 88
SSFNX Sharpe Ratio Rank: 90
SSFNX Sortino Ratio Rank: 90
SSFNX Omega Ratio Rank: 88
SSFNX Calmar Ratio Rank: 81
SSFNX Martin Ratio Rank: 88

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.

ATTIX vs. SSFNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century One Choice In Retirement Portfolio Class I (ATTIX) and State Street Target Retirement Fund (SSFNX). 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.

	ATTIX	SSFNX	Difference
Sharpe ratio: Return per unit of total volatility	2.10	3.00	-0.90
Sortino ratio: Return per unit of downside risk	3.06	4.41	-1.35
Omega ratio: Gain probability vs. loss probability	1.40	1.62	-0.22
Calmar ratio: Return relative to maximum drawdown	2.43	3.73	-1.31
Martin ratio: Return relative to average drawdown	10.74	16.97	-6.24
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ATTIX vs. SSFNX - Sharpe Ratio Comparison

The current ATTIX Sharpe Ratio is 2.10, which is lower than the SSFNX Sharpe Ratio of 3.00. The chart below compares the historical Sharpe Ratios of ATTIX and SSFNX, 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

	ATTIX	SSFNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.10	3.00	-0.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.61	0.70	-0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.90	-0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.68	0.84	-0.16

Drawdowns

ATTIX vs. SSFNX - Drawdown Comparison

The maximum ATTIX drawdown since its inception was -27.52%, which is greater than SSFNX's maximum drawdown of -16.62%. Use the drawdown chart below to compare losses from any high point for ATTIX and SSFNX.

Drawdown Indicators

	ATTIX	SSFNX	Difference
Max Drawdown Largest peak-to-trough decline	-27.52%	-16.62%	-10.90%
Max Drawdown (1Y) Largest decline over 1 year	-5.05%	-3.52%	-1.53%
Max Drawdown (3Y) Largest decline over 3 years	-7.25%	-5.40%	-1.85%
Max Drawdown (5Y) Largest decline over 5 years	-18.20%	-16.62%	-1.58%
Max Drawdown (10Y) Largest decline over 10 years	-18.86%	-16.62%	-2.24%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-2.97%	-2.52%	-0.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.14%	0.77%	+0.37%

Volatility

ATTIX vs. SSFNX - Volatility Comparison

American Century One Choice In Retirement Portfolio Class I (ATTIX) has a higher volatility of 1.78% compared to State Street Target Retirement Fund (SSFNX) at 1.41%. This indicates that ATTIX's price experiences larger fluctuations and is considered to be riskier than SSFNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ATTIX	SSFNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.78%	1.41%	+0.37%
Volatility (6M) Calculated over the trailing 6-month period	4.70%	3.53%	+1.17%
Volatility (1Y) Calculated over the trailing 1-year period	5.85%	4.38%	+1.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.79%	6.58%	+1.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.07%	6.57%	+1.50%

ATTIX vs. SSFNX - Expense Ratio Comparison

ATTIX has a 0.56% expense ratio, which is higher than SSFNX's 0.10% expense ratio.

Dividends

ATTIX vs. SSFNX - Dividend Comparison

ATTIX's dividend yield for the trailing twelve months is around 8.55%, more than SSFNX's 4.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ATTIX American Century One Choice In Retirement Portfolio Class I	8.55%	9.09%	4.23%	4.51%	5.43%	7.96%	1.47%	7.57%	8.89%	2.17%	3.20%	4.54%
SSFNX State Street Target Retirement Fund	4.61%	4.86%	5.78%	5.26%	5.12%	6.69%	1.61%	3.35%	4.40%	2.72%	1.84%	2.05%

Frequently Asked Questions

Can I hold both ATTIX and SSFNX in my portfolio?

With a correlation of 0.93, ATTIX and SSFNX 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, ATTIX or SSFNX?

ATTIX has higher volatility (1.78%) compared to SSFNX (1.41%). In terms of maximum drawdown, ATTIX dropped -27.52% vs SSFNX's -16.62%.

Which has better risk-adjusted returns?

SSFNX currently has the higher Sharpe Ratio (3.00 vs 2.10), 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.