GENIX vs. MAMEX

Last updated Jun 3, 2026

GENIX (Gotham Enhanced Return Fund) and MAMEX (Mutual of America Mid-Cap Equity Index Fund) are both Mid Cap Blend Equities funds. Over the past 5 years, GENIX returned 17.83%/yr vs 7.04%/yr for MAMEX. A 0.70 correlation means they provide meaningful diversification when combined. GENIX charges 1.50%/yr vs 0.16%/yr for MAMEX.

Performance

GENIX vs. MAMEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Gotham Enhanced Return Fund (GENIX) 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, GENIX achieves a 14.18% return, which is significantly higher than MAMEX's 13.08% return.

GENIX

• 1D: 0.60%
• 1M: 6.62%
• YTD: 14.18%
• 6M: 14.68%
• 1Y: 31.73%
• 3Y*: 27.00%
• 5Y*: 17.83%
• 10Y*: 13.97%

MAMEX

• 1D: -0.09%
• 1M: 2.34%
• YTD: 13.08%
• 6M: 14.28%
• 1Y: 25.96%
• 3Y*: 14.88%
• 5Y*: 7.04%
• 10Y*: —

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

GENIX vs. MAMEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
GENIX Gotham Enhanced Return Fund	14.18%	21.16%	27.31%	25.26%	-12.02%	39.66%	-8.60%
MAMEX Mutual of America Mid-Cap Equity Index Fund	13.08%	7.40%	13.08%	13.99%	-13.59%	23.35%	925.33%

Correlation

The correlation between GENIX and MAMEX is 0.65, 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	0.65
Correlation (3Y) Calculated over the trailing 3-year period	0.70
Correlation (5Y) Calculated over the trailing 5-year period	0.68
Correlation (All Time) Calculated using the full available price history since Jan 3, 2020	0.70

The correlation between GENIX and MAMEX has been stable across timeframes, ranging from 0.65 to 0.70 - a consistent structural relationship.

Return for Risk

GENIX vs. MAMEX — Risk / Return Rank

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

GENIX

GENIX Risk / Return Rank: 84
GENIX Sharpe Ratio Rank: 84
GENIX Sortino Ratio Rank: 79
GENIX Omega Ratio Rank: 72
GENIX Calmar Ratio Rank: 92
GENIX Martin Ratio Rank: 95

MAMEX

MAMEX Risk / Return Rank: 55
MAMEX Sharpe Ratio Rank: 38
MAMEX Sortino Ratio Rank: 41
MAMEX Omega Ratio Rank: 37
MAMEX Calmar Ratio Rank: 81
MAMEX Martin Ratio Rank: 77

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.

GENIX vs. MAMEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Gotham Enhanced Return Fund (GENIX) 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.

	GENIX	MAMEX	Difference
Sharpe ratio Return per unit of total volatility	2.71	1.80	+0.91
Sortino ratio Return per unit of downside risk	3.75	2.70	+1.05
Omega ratio Gain probability vs. loss probability	1.47	1.32	+0.15
Calmar ratio Return relative to maximum drawdown	4.96	3.72	+1.24
Martin ratio Return relative to average drawdown	22.16	14.44	+7.73
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GENIX vs. MAMEX - Sharpe Ratio Comparison

The current GENIX Sharpe Ratio is 2.71, which is higher than the MAMEX Sharpe Ratio of 1.80. The chart below compares the historical Sharpe Ratios of GENIX 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.

Sharpe Ratios by Period

	GENIX	MAMEX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.71	1.80	+0.91
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.04	0.36	+0.68
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.17	+0.50

Drawdowns

GENIX vs. MAMEX - Drawdown Comparison

The maximum GENIX drawdown since its inception was -39.35%, smaller than the maximum MAMEX drawdown of -42.17%. Use the drawdown chart below to compare losses from any high point for GENIX and MAMEX.

Drawdown Indicators

	GENIX	MAMEX	Difference
Max Drawdown Largest peak-to-trough decline	-39.35%	-42.17%	+2.82%
Max Drawdown (1Y) Largest decline over 1 year	-6.44%	-8.84%	+2.40%
Max Drawdown (3Y) Largest decline over 3 years	-19.20%	-24.11%	+4.91%
Max Drawdown (5Y) Largest decline over 5 years	-20.74%	-24.39%	+3.65%
Max Drawdown (10Y) Largest decline over 10 years	-39.35%	—	—
Current Drawdown Current decline from peak	0.00%	-0.13%	+0.13%
Average Drawdown Average peak-to-trough decline	-5.65%	-7.51%	+1.86%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.44%	2.28%	-0.84%

Volatility

GENIX vs. MAMEX - Volatility Comparison

The current volatility for Gotham Enhanced Return Fund (GENIX) is 2.65%, while Mutual of America Mid-Cap Equity Index Fund (MAMEX) has a volatility of 4.37%. This indicates that GENIX 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

	GENIX	MAMEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.65%	4.37%	-1.72%
Volatility (6M) Calculated over the trailing 6-month period	8.92%	12.21%	-3.29%
Volatility (1Y) Calculated over the trailing 1-year period	12.03%	16.09%	-4.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.20%	22.01%	-4.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.53%	383.49%	-364.96%

GENIX vs. MAMEX - Expense Ratio Comparison

GENIX has a 1.50% expense ratio, which is higher than MAMEX's 0.16% expense ratio.

Dividends

GENIX vs. MAMEX - Dividend Comparison

GENIX's dividend yield for the trailing twelve months is around 1.81%, less than MAMEX's 10.48% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GENIX Gotham Enhanced Return Fund	1.81%	2.07%	19.28%	9.82%	8.02%	19.31%	0.14%	32.49%	9.60%	0.97%	0.00%	1.85%
MAMEX Mutual of America Mid-Cap Equity Index Fund	10.48%	11.85%	9.07%	7.67%	14.01%	12.96%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both GENIX and MAMEX in my portfolio?

GENIX and MAMEX have a correlation of 0.65, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GENIX or MAMEX?

MAMEX has higher volatility (4.37%) compared to GENIX (2.65%). In terms of maximum drawdown, GENIX dropped -39.35% vs MAMEX's -42.17%.

Which has better risk-adjusted returns?

GENIX currently has the higher Sharpe Ratio (2.71 vs 1.80), 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.