MACHX vs. MAMEX

Last updated Aug 1, 2026

MACHX (Mutual of America Composite Fund) and MAMEX (Mutual of America Mid-Cap Equity Index Fund) are both mutual funds - MACHX is a Diversified Portfolio 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, MACHX returned 9.10%/yr vs 7.56%/yr for MAMEX. Their correlation of 0.83 means they have usually moved in the same direction. MACHX charges 0.54%/yr vs 0.16%/yr for MAMEX.

Performance

MACHX vs. MAMEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Mutual of America Composite Fund (MACHX) 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, MACHX achieves a 7.43% return, which is significantly lower than MAMEX's 14.59% return.

MACHX

• 1D: 1.41%
• 1M: 0.48%
• 6M: 5.67%
• YTD: 7.43%
• 1Y: 16.45%
• 3Y*: 15.33%
• 5Y*: 9.10%
• 10Y*: —
• ALL TIME*: 54.44%

MAMEX

• 1D: 0.79%
• 1M: -0.99%
• 6M: 9.05%
• YTD: 14.59%
• 1Y: 22.89%
• 3Y*: 12.06%
• 5Y*: 7.56%
• 10Y*: —
• ALL TIME*: 54.34%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
MACHX Mutual of America Composite Fund	$0.00	$0.00	$0.00
MAMEX Mutual of America Mid-Cap Equity Index Fund	$0.00	$0.00	$0.00

MACHX vs. MAMEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MACHX Mutual of America Composite Fund	7.43%	18.88%	16.49%	14.56%	-12.57%	14.64%	919.15%
MAMEX Mutual of America Mid-Cap Equity Index Fund	14.59%	7.40%	13.08%	13.99%	-13.59%	23.35%	925.33%

Correlation

The correlation between MACHX and MAMEX is 0.77, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.77
Correlation (3Y) Balances recent behavior with more history.	0.78
Correlation (5Y) Shows whether the relationship held over a longer period.	0.83
Correlation (All Time) Calculated using the full available price history since Jan 2, 2020	0.83

The correlation between MACHX and MAMEX has been stable across timeframes, ranging from 0.77 to 0.83 - a consistent structural relationship.

Return for Risk

MACHX vs. MAMEX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

MACHX

MACHX Risk / Return Rank: 82
MACHX Sharpe Ratio Rank: 79
MACHX Sortino Ratio Rank: 80
MACHX Omega Ratio Rank: 77
MACHX Calmar Ratio Rank: 82
MACHX Martin Ratio Rank: 91

MAMEX

MAMEX Risk / Return Rank: 61
MAMEX Sharpe Ratio Rank: 49
MAMEX Sortino Ratio Rank: 56
MAMEX Omega Ratio Rank: 48
MAMEX Calmar Ratio Rank: 75
MAMEX Martin Ratio Rank: 77

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

MACHX vs. MAMEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America Composite Fund (MACHX) 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.

	MACHX	MAMEX	Difference
Sharpe ratio: Return per unit of total volatility	1.90	1.36	+0.53
Sortino ratio: Return per unit of downside risk	2.84	2.11	+0.73
Omega ratio: Gain probability vs. loss probability	1.35	1.25	+0.10
Calmar ratio: Return relative to maximum drawdown	2.80	2.50	+0.30
Martin ratio: Return relative to average drawdown	13.05	9.53	+3.52

MACHX vs. MAMEX - Sharpe Ratio Comparison

The current MACHX Sharpe Ratio is 1.90, which is higher than the MAMEX Sharpe Ratio of 1.36. The chart below compares the historical Sharpe Ratios of MACHX 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

MACHX vs. MAMEX - Drawdown Comparison

The maximum MACHX drawdown since its inception was -21.24%, smaller than the maximum MAMEX drawdown of -42.17%. Use the drawdown chart below to compare losses from any high point for MACHX and MAMEX.

Drawdown Indicators

	MACHX	MAMEX	Difference
Max Drawdown Largest peak-to-trough decline	-21.24%	-42.17%	+20.93%
Max Drawdown (1Y) Largest decline over 1 year	-6.17%	-8.84%	+2.67%
Max Drawdown (3Y) Largest decline over 3 years	-14.97%	-24.11%	+9.14%
Max Drawdown (5Y) Largest decline over 5 years	-18.57%	-24.39%	+5.82%
Current Drawdown Current decline from peak	-0.33%	-2.26%	+1.93%
Average Drawdown Average peak-to-trough decline	-4.08%	-7.33%	+3.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.26%	2.27%	-1.01%

Volatility

MACHX vs. MAMEX - Volatility Comparison

The current volatility for Mutual of America Composite Fund (MACHX) is 2.45%, while Mutual of America Mid-Cap Equity Index Fund (MAMEX) has a volatility of 3.45%. This indicates that MACHX experiences smaller price fluctuations and is considered to be less risky than MAMEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MACHX	MAMEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.45%	3.45%	-1.00%
Volatility (6M) Calculated over the trailing 6-month period	7.00%	11.13%	-4.13%
Volatility (1Y) Calculated over the trailing 1-year period	9.12%	16.26%	-7.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.78%	21.89%	-9.11%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	373.71%	378.03%	-4.32%

MACHX vs. MAMEX - Expense Ratio Comparison

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

Dividends

MACHX vs. MAMEX - Dividend Comparison

MACHX's dividend yield for the trailing twelve months is around 10.97%, more than MAMEX's 10.35% yield.

Position	TTM	2025	2024	2023	2022	2021
MACHX Mutual of America Composite Fund	10.97%	11.75%	8.06%	6.00%	6.23%	3.64%
MAMEX Mutual of America Mid-Cap Equity Index Fund	10.35%	11.85%	9.07%	7.67%	14.01%	12.96%

Frequently Asked Questions

Can I hold both MACHX and MAMEX in my portfolio?

MACHX and MAMEX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MACHX or MAMEX?

MAMEX has higher volatility (3.45%) compared to MACHX (2.45%). In terms of maximum drawdown, MACHX dropped -21.24% vs MAMEX's -42.17%.

Which has better risk-adjusted returns?

MACHX currently has the higher Sharpe Ratio (1.90 vs 1.36), 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.