NDARX vs. FSRKX

Last updated Jun 5, 2026

NDARX (American Funds Retirement Income Portfolio - Enhanced) and FSRKX (Fidelity Strategic Real Return Fund Class K6) are both Diversified Portfolio funds. Over the past 5 years, NDARX returned 7.81%/yr vs 6.46%/yr for FSRKX. A 0.71 correlation means they provide meaningful diversification when combined. NDARX charges 0.34%/yr vs 0.51%/yr for FSRKX.

Performance

NDARX vs. FSRKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Retirement Income Portfolio - Enhanced (NDARX) and Fidelity Strategic Real Return Fund Class K6 (FSRKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NDARX achieves a 6.53% return, which is significantly lower than FSRKX's 8.80% return.

NDARX

• 1D: -0.43%
• 1M: 1.77%
• YTD: 6.53%
• 6M: 7.20%
• 1Y: 17.36%
• 3Y*: 14.61%
• 5Y*: 7.81%
• 10Y*: 8.45%

FSRKX

• 1D: 0.00%
• 1M: -0.10%
• YTD: 8.80%
• 6M: 9.07%
• 1Y: 16.69%
• 3Y*: 10.33%
• 5Y*: 6.46%
• 10Y*: —

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

NDARX vs. FSRKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
NDARX American Funds Retirement Income Portfolio - Enhanced	6.53%	17.21%	11.68%	12.03%	-10.98%	15.09%	7.10%	5.65%
FSRKX Fidelity Strategic Real Return Fund Class K6	8.80%	10.59%	6.00%	4.81%	-3.13%	16.06%	3.94%	1.66%

Correlation

The correlation between NDARX and FSRKX is 0.46, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.46
Correlation (3Y) Calculated over the trailing 3-year period	0.63
Correlation (5Y) Calculated over the trailing 5-year period	0.69
Correlation (All Time) Calculated using the full available price history since Oct 14, 2019	0.71

Over the past year, the correlation between NDARX and FSRKX has dropped to 0.46 - well below their long-term average of 0.71, suggesting their price drivers have been diverging.

Return for Risk

NDARX vs. FSRKX — Risk / Return Rank

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

NDARX

NDARX Risk / Return Rank: 59
NDARX Sharpe Ratio Rank: 63
NDARX Sortino Ratio Rank: 61
NDARX Omega Ratio Rank: 64
NDARX Calmar Ratio Rank: 47
NDARX Martin Ratio Rank: 59

FSRKX

FSRKX Risk / Return Rank: 96
FSRKX Sharpe Ratio Rank: 97
FSRKX Sortino Ratio Rank: 95
FSRKX Omega Ratio Rank: 93
FSRKX Calmar Ratio Rank: 98
FSRKX Martin Ratio Rank: 98

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.

NDARX vs. FSRKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Retirement Income Portfolio - Enhanced (NDARX) and Fidelity Strategic Real Return Fund Class K6 (FSRKX). 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.

	NDARX	FSRKX	Difference
Sharpe ratio: Return per unit of total volatility	2.33	3.61	-1.29
Sortino ratio: Return per unit of downside risk	3.29	5.11	-1.82
Omega ratio: Gain probability vs. loss probability	1.44	1.73	-0.28
Calmar ratio: Return relative to maximum drawdown	2.59	8.79	-6.20
Martin ratio: Return relative to average drawdown	11.68	32.76	-21.08
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

NDARX vs. FSRKX - Sharpe Ratio Comparison

The current NDARX Sharpe Ratio is 2.33, which is lower than the FSRKX Sharpe Ratio of 3.61. The chart below compares the historical Sharpe Ratios of NDARX and FSRKX, 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

	NDARX	FSRKX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.33	3.61	-1.29
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.83	0.94	-0.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.83	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.86	0.93	-0.07

Drawdowns

NDARX vs. FSRKX - Drawdown Comparison

The maximum NDARX drawdown since its inception was -23.62%, which is greater than FSRKX's maximum drawdown of -19.93%. Use the drawdown chart below to compare losses from any high point for NDARX and FSRKX.

Drawdown Indicators

	NDARX	FSRKX	Difference
Max Drawdown Largest peak-to-trough decline	-23.62%	-19.93%	-3.69%
Max Drawdown (1Y) Largest decline over 1 year	-6.86%	-1.93%	-4.93%
Max Drawdown (3Y) Largest decline over 3 years	-9.18%	-5.84%	-3.34%
Max Drawdown (5Y) Largest decline over 5 years	-18.37%	-12.74%	-5.63%
Max Drawdown (10Y) Largest decline over 10 years	-23.62%	—	—
Current Drawdown Current decline from peak	-0.43%	-0.72%	+0.29%
Average Drawdown Average peak-to-trough decline	-3.09%	-3.21%	+0.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.52%	0.52%	+1.00%

Volatility

NDARX vs. FSRKX - Volatility Comparison

American Funds Retirement Income Portfolio - Enhanced (NDARX) has a higher volatility of 2.33% compared to Fidelity Strategic Real Return Fund Class K6 (FSRKX) at 1.32%. This indicates that NDARX's price experiences larger fluctuations and is considered to be riskier than FSRKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NDARX	FSRKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.33%	1.32%	+1.01%
Volatility (6M) Calculated over the trailing 6-month period	6.12%	3.66%	+2.46%
Volatility (1Y) Calculated over the trailing 1-year period	7.63%	4.70%	+2.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	9.49%	6.94%	+2.55%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.21%	7.79%	+2.42%

NDARX vs. FSRKX - Expense Ratio Comparison

NDARX has a 0.34% expense ratio, which is lower than FSRKX's 0.51% expense ratio.

Dividends

NDARX vs. FSRKX - Dividend Comparison

NDARX's dividend yield for the trailing twelve months is around 4.91%, more than FSRKX's 4.25% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
FSRKX Fidelity Strategic Real Return Fund Class K6	4.25%	4.83%	4.98%	5.38%	7.38%	5.43%	2.31%	1.16%	0.00%	0.00%	0.00%
NDARX American Funds Retirement Income Portfolio - Enhanced	4.91%	5.78%	3.07%	3.37%	5.60%	4.29%	2.91%	4.03%	4.29%	2.68%	2.86%

Frequently Asked Questions

Can I hold both NDARX and FSRKX in my portfolio?

NDARX and FSRKX have a correlation of 0.46, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NDARX or FSRKX?

NDARX has higher volatility (2.33%) compared to FSRKX (1.32%). In terms of maximum drawdown, NDARX dropped -23.62% vs FSRKX's -19.93%.

Which has better risk-adjusted returns?

FSRKX currently has the higher Sharpe Ratio (3.61 vs 2.33), 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.