MARMX vs. MAIFX

Last updated Jun 23, 2026

MARMX (Mutual of America Retirement Income Fund) and MAIFX (Mutual of America International Fund) are both mutual funds - MARMX is a Target Retirement Date fund managed by Mutual of America, while MAIFX is a Foreign Large Cap Equities fund managed by Mutual of America. Over the past 5 years, MARMX returned 3.21%/yr vs 9.53%/yr for MAIFX. A 0.70 correlation means they provide meaningful diversification when combined. Both charge a 0.13% expense ratio.

Performance

MARMX vs. MAIFX - Performance Comparison

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

Returns By Period

In the year-to-date period, MARMX achieves a 3.58% return, which is significantly lower than MAIFX's 10.09% return.

MARMX

• 1D: 0.50%
• 1M: 0.83%
• YTD: 3.58%
• 6M: 3.58%
• 1Y: 10.80%
• 3Y*: 7.94%
• 5Y*: 3.21%
• 10Y*: —

MAIFX

• 1D: 0.92%
• 1M: 2.54%
• YTD: 10.09%
• 6M: 10.39%
• 1Y: 26.94%
• 3Y*: 17.92%
• 5Y*: 9.53%
• 10Y*: —

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

MARMX vs. MAIFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MARMX Mutual of America Retirement Income Fund	3.58%	10.54%	5.88%	7.79%	-11.40%	3.49%	890.98%
MAIFX Mutual of America International Fund	10.09%	37.23%	3.22%	16.96%	-12.81%	9.11%	1,053.09%

Correlation

The correlation between MARMX and MAIFX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.75
Correlation (5Y) Calculated over the trailing 5-year period	0.73
Correlation (All Time) Calculated using the full available price history since Jun 26, 2020	0.70

The correlation between MARMX and MAIFX shifts across timeframes, from 0.70 (all time) to 0.85 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

MARMX vs. MAIFX — Risk / Return Rank

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

MARMX

MARMX Risk / Return Rank: 74
MARMX Sharpe Ratio Rank: 71
MARMX Sortino Ratio Rank: 79
MARMX Omega Ratio Rank: 73
MARMX Calmar Ratio Rank: 69
MARMX Martin Ratio Rank: 80

MAIFX

MAIFX Risk / Return Rank: 45
MAIFX Sharpe Ratio Rank: 44
MAIFX Sortino Ratio Rank: 47
MAIFX Omega Ratio Rank: 43
MAIFX Calmar Ratio Rank: 49
MAIFX Martin Ratio Rank: 44

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.

MARMX vs. MAIFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America Retirement Income Fund (MARMX) and Mutual of America International Fund (MAIFX). 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.

	MARMX	MAIFX	Difference
Sharpe ratio: Return per unit of total volatility	2.26	1.79	+0.47
Sortino ratio: Return per unit of downside risk	3.46	2.67	+0.79
Omega ratio: Gain probability vs. loss probability	1.43	1.32	+0.11
Calmar ratio: Return relative to maximum drawdown	3.07	2.53	+0.54
Martin ratio: Return relative to average drawdown	13.77	8.73	+5.03

MARMX vs. MAIFX - Sharpe Ratio Comparison

The current MARMX Sharpe Ratio is 2.26, which is comparable to the MAIFX Sharpe Ratio of 1.79. The chart below compares the historical Sharpe Ratios of MARMX and MAIFX, 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

MARMX vs. MAIFX - Drawdown Comparison

The maximum MARMX drawdown since its inception was -16.21%, smaller than the maximum MAIFX drawdown of -33.70%. Use the drawdown chart below to compare losses from any high point for MARMX and MAIFX.

Drawdown Indicators

	MARMX	MAIFX	Difference
Max Drawdown Largest peak-to-trough decline	-16.21%	-33.70%	+17.49%
Max Drawdown (1Y) Largest decline over 1 year	-3.92%	-11.57%	+7.65%
Max Drawdown (3Y) Largest decline over 3 years	-5.64%	-12.87%	+7.23%
Max Drawdown (5Y) Largest decline over 5 years	-15.94%	-29.00%	+13.06%
Current Drawdown Current decline from peak	-0.16%	-1.30%	+1.14%
Average Drawdown Average peak-to-trough decline	-4.25%	-6.02%	+1.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.84%	3.20%	-2.36%

Volatility

MARMX vs. MAIFX - Volatility Comparison

The current volatility for Mutual of America Retirement Income Fund (MARMX) is 2.02%, while Mutual of America International Fund (MAIFX) has a volatility of 4.96%. This indicates that MARMX experiences smaller price fluctuations and is considered to be less risky than MAIFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MARMX	MAIFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.02%	4.96%	-2.94%
Volatility (6M) Calculated over the trailing 6-month period	4.33%	13.64%	-9.31%
Volatility (1Y) Calculated over the trailing 1-year period	5.34%	16.37%	-11.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.56%	18.42%	-10.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	391.44%	378.13%	+13.31%

MARMX vs. MAIFX - Expense Ratio Comparison

Both MARMX and MAIFX have an expense ratio of 0.13%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

MARMX vs. MAIFX - Dividend Comparison

MARMX's dividend yield for the trailing twelve months is around 4.17%, more than MAIFX's 3.08% yield.

Position	TTM	2025	2024	2023	2022	2021
MAIFX Mutual of America International Fund	1.65%	3.39%	1.94%	3.77%	9.48%	9.92%
MARMX Mutual of America Retirement Income Fund	4.17%	4.32%	4.16%	1.55%	5.73%	2.03%

Frequently Asked Questions

Can I hold both MARMX and MAIFX in my portfolio?

MARMX and MAIFX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MARMX or MAIFX?

MAIFX has higher volatility (4.96%) compared to MARMX (2.02%). In terms of maximum drawdown, MARMX dropped -16.21% vs MAIFX's -33.70%.

Which has better risk-adjusted returns?

MARMX currently has the higher Sharpe Ratio (2.26 vs 1.79), 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.