MAMEX vs. VMCIX
Compare and contrast key facts about Mutual of America Mid-Cap Equity Index Fund (MAMEX) and Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX).
MAMEX is managed by Mutual of America. It was launched on Nov 29, 2021. VMCIX is managed by Vanguard. It was launched on May 21, 1998.
Performance
MAMEX vs. VMCIX - Performance Comparison
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MAMEX vs. VMCIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|---|---|
MAMEX Mutual of America Mid-Cap Equity Index Fund | -0.45% | 7.40% | 13.08% | 13.99% | -13.59% | 23.35% | 925.33% |
VMCIX Vanguard Mid-Cap Index Fund Institutional Shares | -2.79% | 11.67% | 14.68% | 16.54% | -18.70% | 24.53% | 17.79% |
Returns By Period
In the year-to-date period, MAMEX achieves a -0.45% return, which is significantly higher than VMCIX's -2.79% return.
MAMEX
- 1D
- -2.44%
- 1M
- -8.80%
- YTD
- -0.45%
- 6M
- 1.26%
- 1Y
- 13.94%
- 3Y*
- 10.08%
- 5Y*
- 5.30%
- 10Y*
- —
VMCIX
- 1D
- -0.66%
- 1M
- -7.87%
- YTD
- -2.79%
- 6M
- -3.58%
- 1Y
- 10.31%
- 3Y*
- 11.79%
- 5Y*
- 6.51%
- 10Y*
- 10.43%
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MAMEX vs. VMCIX - Expense Ratio Comparison
MAMEX has a 0.16% expense ratio, which is higher than VMCIX's 0.04% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
MAMEX vs. VMCIX — Risk / Return Rank
MAMEX
VMCIX
MAMEX vs. VMCIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Mutual of America Mid-Cap Equity Index Fund (MAMEX) and Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX). 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.
| MAMEX | VMCIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.72 | 0.63 | +0.09 |
Sortino ratioReturn per unit of downside risk | 1.18 | 0.99 | +0.19 |
Omega ratioGain probability vs. loss probability | 1.16 | 1.14 | +0.02 |
Calmar ratioReturn relative to maximum drawdown | 0.35 | 0.73 | -0.38 |
Martin ratioReturn relative to average drawdown | 1.45 | 3.40 | -1.95 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MAMEX | VMCIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.72 | 0.63 | +0.09 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.27 | 0.37 | -0.10 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.55 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.16 | 0.47 | -0.31 |
Correlation
The correlation between MAMEX and VMCIX is 0.82, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
MAMEX vs. VMCIX - Dividend Comparison
MAMEX's dividend yield for the trailing twelve months is around 11.90%, more than VMCIX's 1.54% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MAMEX Mutual of America Mid-Cap Equity Index Fund | 11.90% | 11.85% | 9.07% | 7.67% | 14.01% | 12.96% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
VMCIX Vanguard Mid-Cap Index Fund Institutional Shares | 1.54% | 1.52% | 1.49% | 1.51% | 1.60% | 1.12% | 1.45% | 1.48% | 1.83% | 1.36% | 1.46% | 1.48% |
Drawdowns
MAMEX vs. VMCIX - Drawdown Comparison
The maximum MAMEX drawdown since its inception was -42.17%, smaller than the maximum VMCIX drawdown of -58.86%. Use the drawdown chart below to compare losses from any high point for MAMEX and VMCIX.
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Drawdown Indicators
| MAMEX | VMCIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -42.17% | -58.86% | +16.69% |
Max Drawdown (1Y)Largest decline over 1 year | -14.16% | -12.77% | -1.39% |
Max Drawdown (5Y)Largest decline over 5 years | -24.39% | -27.54% | +3.15% |
Max Drawdown (10Y)Largest decline over 10 years | — | -39.30% | — |
Current DrawdownCurrent decline from peak | -8.84% | -8.13% | -0.71% |
Average DrawdownAverage peak-to-trough decline | -7.68% | -8.02% | +0.34% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.14% | 2.75% | +1.39% |
Volatility
MAMEX vs. VMCIX - Volatility Comparison
Mutual of America Mid-Cap Equity Index Fund (MAMEX) has a higher volatility of 4.62% compared to Vanguard Mid-Cap Index Fund Institutional Shares (VMCIX) at 4.23%. This indicates that MAMEX's price experiences larger fluctuations and is considered to be riskier than VMCIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MAMEX | VMCIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.62% | 4.23% | +0.39% |
Volatility (6M)Calculated over the trailing 6-month period | 11.83% | 9.43% | +2.40% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.79% | 17.58% | +4.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.02% | 17.63% | +4.39% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 389.19% | 18.90% | +370.29% |