MURNX vs. MAMOX

Last updated Jul 16, 2026

MURNX (Mutual of America Investment Corporation - 2050 Retirement Fund) and MAMOX (MoA Moderate Allocation Fund) are both mutual funds - MURNX is a Target Retirement Date fund managed by Mutual of America, while MAMOX is a Diversified Portfolio fund actively managed by Mutual of America. Over the past 5 years, MURNX returned 8.48%/yr vs 5.85%/yr for MAMOX. With a 0.96 correlation, they move nearly in lockstep. MURNX charges 0.08%/yr vs 0.35%/yr for MAMOX.

Performance

MURNX vs. MAMOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Mutual of America Investment Corporation - 2050 Retirement Fund (MURNX) and MoA Moderate Allocation Fund (MAMOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MURNX achieves a 10.00% return, which is significantly higher than MAMOX's 6.84% return.

MURNX

• 1D: 0.47%
• 1M: -0.18%
• 6M: 7.60%
• YTD: 10.00%
• 1Y: 20.13%
• 3Y*: 15.22%
• 5Y*: 8.48%
• 10Y*: —

MAMOX

• 1D: 0.41%
• 1M: -0.15%
• 6M: 5.26%
• YTD: 6.84%
• 1Y: 15.22%
• 3Y*: 11.64%
• 5Y*: 5.85%
• 10Y*: —

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

MURNX vs. MAMOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MURNX Mutual of America Investment Corporation - 2050 Retirement Fund	10.00%	17.89%	14.37%	15.78%	-16.25%	17.85%	918.18%
MAMOX MoA Moderate Allocation Fund	6.84%	15.45%	10.12%	11.57%	-14.51%	11.46%	870.51%

Correlation

The correlation between MURNX and MAMOX is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (All Time) Calculated using the full available price history since Jan 2, 2020	0.96

The correlation between MURNX and MAMOX has been stable across timeframes, ranging from 0.96 to 0.99 - a consistent structural relationship.

Return for Risk

MURNX vs. MAMOX — Risk / Return Rank

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

MURNX

MURNX Risk / Return Rank: 70
MURNX Sharpe Ratio Rank: 65
MURNX Sortino Ratio Rank: 70
MURNX Omega Ratio Rank: 62
MURNX Calmar Ratio Rank: 69
MURNX Martin Ratio Rank: 83

MAMOX

MAMOX Risk / Return Rank: 72
MAMOX Sharpe Ratio Rank: 68
MAMOX Sortino Ratio Rank: 74
MAMOX Omega Ratio Rank: 66
MAMOX Calmar Ratio Rank: 67
MAMOX Martin Ratio Rank: 83

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.

MURNX vs. MAMOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America Investment Corporation - 2050 Retirement Fund (MURNX) and MoA Moderate Allocation Fund (MAMOX). 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.

	MURNX	MAMOX	Difference
Sharpe ratio: Return per unit of total volatility	1.75	1.82	-0.07
Sortino ratio: Return per unit of downside risk	2.61	2.75	-0.14
Omega ratio: Gain probability vs. loss probability	1.32	1.33	-0.02
Calmar ratio: Return relative to maximum drawdown	2.53	2.52	+0.01
Martin ratio: Return relative to average drawdown	11.69	11.61	+0.08

MURNX vs. MAMOX - Sharpe Ratio Comparison

The current MURNX Sharpe Ratio is 1.75, which is comparable to the MAMOX Sharpe Ratio of 1.82. The chart below compares the historical Sharpe Ratios of MURNX and MAMOX, 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

MURNX vs. MAMOX - Drawdown Comparison

The maximum MURNX drawdown since its inception was -32.96%, which is greater than MAMOX's maximum drawdown of -21.38%. Use the drawdown chart below to compare losses from any high point for MURNX and MAMOX.

Drawdown Indicators

	MURNX	MAMOX	Difference
Max Drawdown Largest peak-to-trough decline	-32.96%	-21.38%	-11.58%
Max Drawdown (1Y) Largest decline over 1 year	-8.50%	-6.48%	-2.02%
Max Drawdown (3Y) Largest decline over 3 years	-15.36%	-10.58%	-4.78%
Max Drawdown (5Y) Largest decline over 5 years	-23.75%	-20.05%	-3.70%
Current Drawdown Current decline from peak	-0.56%	-0.34%	-0.22%
Average Drawdown Average peak-to-trough decline	-5.41%	-4.58%	-0.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.76%	1.34%	+0.42%

Volatility

MURNX vs. MAMOX - Volatility Comparison

Mutual of America Investment Corporation - 2050 Retirement Fund (MURNX) has a higher volatility of 3.26% compared to MoA Moderate Allocation Fund (MAMOX) at 2.70%. This indicates that MURNX's price experiences larger fluctuations and is considered to be riskier than MAMOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MURNX	MAMOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.26%	2.70%	+0.56%
Volatility (6M) Calculated over the trailing 6-month period	9.47%	7.08%	+2.39%
Volatility (1Y) Calculated over the trailing 1-year period	12.25%	8.95%	+3.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.27%	13.12%	+4.15%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	378.03%	375.16%	+2.87%

MURNX vs. MAMOX - Expense Ratio Comparison

MURNX has a 0.08% expense ratio, which is lower than MAMOX's 0.35% expense ratio.

Dividends

MURNX vs. MAMOX - Dividend Comparison

MURNX's dividend yield for the trailing twelve months is around 8.55%, less than MAMOX's 9.88% yield.

Position	TTM	2025	2024	2023	2022	2021
MAMOX MoA Moderate Allocation Fund	9.88%	10.61%	8.01%	3.64%	11.53%	5.32%
MURNX Mutual of America Investment Corporation - 2050 Retirement Fund	8.55%	9.30%	6.49%	3.56%	11.26%	3.72%

Frequently Asked Questions

Can I hold both MURNX and MAMOX in my portfolio?

With a correlation of 0.99, MURNX and MAMOX 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, MURNX or MAMOX?

MURNX has higher volatility (3.26%) compared to MAMOX (2.70%). In terms of maximum drawdown, MURNX dropped -32.96% vs MAMOX's -21.38%.

Which has better risk-adjusted returns?

MAMOX currently has the higher Sharpe Ratio (1.82 vs 1.75), 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.