MURLX vs. FIRMX

Last updated Jul 17, 2026

MURLX (Mutual of America 2040 Retirement Fund) and FIRMX (Fidelity Managed Retirement Income Fund) are both Target Retirement Date funds. A 0.61 correlation means they provide meaningful diversification when combined. MURLX charges 0.08%/yr vs 0.45%/yr for FIRMX.

Performance

MURLX vs. FIRMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Mutual of America 2040 Retirement Fund (MURLX) and Fidelity Managed Retirement Income Fund (FIRMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MURLX

• 1D: 0.36%
• 1M: 0.40%
• 6M: 6.50%
• YTD: 8.93%
• 1Y: 18.02%
• 3Y*: 14.18%
• 5Y*: 7.73%
• 10Y*: —

FIRMX

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MURLX vs. FIRMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MURLX Mutual of America 2040 Retirement Fund	8.93%	17.01%	13.28%	14.86%	-15.95%	16.84%	889.04%
FIRMX Fidelity Managed Retirement Income Fund	3.60%	9.95%	4.29%	8.07%	-11.66%	2.77%	8.57%

Correlation

The correlation between MURLX and FIRMX is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.69
Correlation (5Y) Calculated over the trailing 5-year period	0.61
Correlation (All Time) Calculated using the full available price history since Jan 2, 2020	0.61

The correlation between MURLX and FIRMX has been stable across timeframes, ranging from 0.61 to 0.70 - a consistent structural relationship.

Return for Risk

MURLX vs. FIRMX — Risk / Return Rank

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

MURLX

MURLX Risk / Return Rank: 72
MURLX Sharpe Ratio Rank: 68
MURLX Sortino Ratio Rank: 72
MURLX Omega Ratio Rank: 64
MURLX Calmar Ratio Rank: 70
MURLX Martin Ratio Rank: 84

FIRMX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

MURLX vs. FIRMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America 2040 Retirement Fund (MURLX) and Fidelity Managed Retirement Income Fund (FIRMX). 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.

	MURLX	FIRMX	Difference
Sharpe ratio: Return per unit of total volatility	1.88	—	—
Sortino ratio: Return per unit of downside risk	2.80	—	—
Omega ratio: Gain probability vs. loss probability	1.34	—	—
Calmar ratio: Return relative to maximum drawdown	2.67	—	—
Martin ratio: Return relative to average drawdown	12.24	—	—

Drawdowns

Drawdown Indicators

	MURLX	FIRMX	Difference
Max Drawdown Largest peak-to-trough decline	-31.54%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-7.75%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-13.69%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-23.06%	—	—
Current Drawdown Current decline from peak	-0.18%	—	—
Average Drawdown Average peak-to-trough decline	-5.31%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	1.62%	—	—

Volatility

Volatility by Period

	MURLX	FIRMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.99%	—	—
Volatility (6M) Calculated over the trailing 6-month period	8.51%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	11.04%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.06%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	378.21%	—	—

MURLX vs. FIRMX - Expense Ratio Comparison

MURLX has a 0.08% expense ratio, which is lower than FIRMX's 0.45% expense ratio.

Dividends

MURLX vs. FIRMX - Dividend Comparison

MURLX's dividend yield for the trailing twelve months is around 8.03%, more than FIRMX's 3.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIRMX Fidelity Managed Retirement Income Fund	3.12%	3.13%	3.02%	2.81%	4.54%	3.56%	2.48%	2.59%	4.65%	8.57%	1.67%	1.68%
MURLX Mutual of America 2040 Retirement Fund	8.03%	8.62%	8.02%	3.04%	11.39%	4.17%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MURLX and FIRMX in my portfolio?

MURLX and FIRMX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.