MAAKX vs. MAMEX

Last updated Jun 24, 2026

MAAKX (Mutual of America All America Fund) and MAMEX (Mutual of America Mid-Cap Equity Index Fund) are both mutual funds - MAAKX is a Large Cap Blend Equities fund managed by Mutual of America, while MAMEX is a Mid Cap Blend Equities fund managed by Mutual of America. Over the past 5 years, MAAKX returned 8.91%/yr vs 7.92%/yr for MAMEX. Their correlation of 0.93 suggests significant overlap in exposure. MAAKX charges 0.54%/yr vs 0.16%/yr for MAMEX.

Performance

MAAKX vs. MAMEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Mutual of America All America Fund (MAAKX) and Mutual of America Mid-Cap Equity Index Fund (MAMEX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MAAKX achieves a 11.08% return, which is significantly lower than MAMEX's 15.12% return.

MAAKX

• 1D: -0.20%
• 1M: 1.40%
• YTD: 11.08%
• 6M: 9.64%
• 1Y: 22.86%
• 3Y*: 16.30%
• 5Y*: 8.91%
• 10Y*: —

MAMEX

• 1D: -0.17%
• 1M: 3.17%
• YTD: 15.12%
• 6M: 13.04%
• 1Y: 25.76%
• 3Y*: 15.38%
• 5Y*: 7.92%
• 10Y*: —

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

MAAKX vs. MAMEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MAAKX Mutual of America All America Fund	11.08%	12.04%	18.57%	16.94%	-18.15%	24.66%	890.98%
MAMEX Mutual of America Mid-Cap Equity Index Fund	15.12%	7.40%	13.08%	13.99%	-13.59%	23.35%	925.33%

Correlation

The correlation between MAAKX and MAMEX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jan 2, 2020	0.93

The correlation between MAAKX and MAMEX has been stable across timeframes, ranging from 0.89 to 0.93 - a consistent structural relationship.

Return for Risk

MAAKX vs. MAMEX — Risk / Return Rank

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

MAAKX

MAAKX Risk / Return Rank: 66
MAAKX Sharpe Ratio Rank: 58
MAAKX Sortino Ratio Rank: 60
MAAKX Omega Ratio Rank: 55
MAAKX Calmar Ratio Rank: 74
MAAKX Martin Ratio Rank: 86

MAMEX

MAMEX Risk / Return Rank: 59
MAMEX Sharpe Ratio Rank: 46
MAMEX Sortino Ratio Rank: 50
MAMEX Omega Ratio Rank: 44
MAMEX Calmar Ratio Rank: 79
MAMEX Martin Ratio Rank: 73

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.

MAAKX vs. MAMEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America All America Fund (MAAKX) and Mutual of America Mid-Cap Equity Index Fund (MAMEX). 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.

	MAAKX	MAMEX	Difference
Sharpe ratio: Return per unit of total volatility	2.06	1.84	+0.22
Sortino ratio: Return per unit of downside risk	2.97	2.76	+0.22
Omega ratio: Gain probability vs. loss probability	1.37	1.33	+0.04
Calmar ratio: Return relative to maximum drawdown	3.18	3.41	-0.23
Martin ratio: Return relative to average drawdown	15.01	13.02	+1.98

MAAKX vs. MAMEX - Sharpe Ratio Comparison

The current MAAKX Sharpe Ratio is 2.06, which is comparable to the MAMEX Sharpe Ratio of 1.84. The chart below compares the historical Sharpe Ratios of MAAKX and MAMEX, 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

MAAKX vs. MAMEX - Drawdown Comparison

The maximum MAAKX drawdown since its inception was -35.71%, smaller than the maximum MAMEX drawdown of -42.17%. Use the drawdown chart below to compare losses from any high point for MAAKX and MAMEX.

Drawdown Indicators

	MAAKX	MAMEX	Difference
Max Drawdown Largest peak-to-trough decline	-35.71%	-42.17%	+6.46%
Max Drawdown (1Y) Largest decline over 1 year	-8.55%	-8.84%	+0.29%
Max Drawdown (3Y) Largest decline over 3 years	-19.43%	-24.11%	+4.68%
Max Drawdown (5Y) Largest decline over 5 years	-23.93%	-24.39%	+0.46%
Current Drawdown Current decline from peak	-0.61%	-0.56%	-0.05%
Average Drawdown Average peak-to-trough decline	-6.18%	-7.43%	+1.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.76%	2.29%	-0.53%

Volatility

MAAKX vs. MAMEX - Volatility Comparison

Mutual of America All America Fund (MAAKX) and Mutual of America Mid-Cap Equity Index Fund (MAMEX) have volatilities of 4.18% and 4.37%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MAAKX	MAMEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.18%	4.37%	-0.19%
Volatility (6M) Calculated over the trailing 6-month period	10.20%	12.15%	-1.95%
Volatility (1Y) Calculated over the trailing 1-year period	13.20%	16.39%	-3.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.87%	22.05%	-2.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	381.14%	381.51%	-0.37%

MAAKX vs. MAMEX - Expense Ratio Comparison

MAAKX has a 0.54% expense ratio, which is higher than MAMEX's 0.16% expense ratio.

Dividends

MAAKX vs. MAMEX - Dividend Comparison

MAAKX's dividend yield for the trailing twelve months is around 14.91%, more than MAMEX's 9.67% yield.

Position	TTM	2025	2024	2023	2022	2021
MAAKX Mutual of America All America Fund	14.91%	17.01%	11.32%	7.30%	14.64%	8.33%
MAMEX Mutual of America Mid-Cap Equity Index Fund	9.67%	11.85%	9.07%	7.67%	14.01%	12.96%

Frequently Asked Questions

Can I hold both MAAKX and MAMEX in my portfolio?

MAAKX and MAMEX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MAAKX or MAMEX?

MAMEX has higher volatility (4.37%) compared to MAAKX (4.18%). In terms of maximum drawdown, MAAKX dropped -35.71% vs MAMEX's -42.17%.

Which has better risk-adjusted returns?

MAAKX currently has the higher Sharpe Ratio (2.06 vs 1.84), 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.