MMGEX vs. OBMCX

Last updated Aug 1, 2026

MMGEX (MassMutual Small Cap Growth Equity Fund) and OBMCX (Oberweis Micro Cap Fund) are both Small Cap Growth Equities funds. Over the past 10 years, MMGEX returned 14.72%/yr vs 20.12%/yr for OBMCX. Their correlation of 0.86 means they have usually moved in the same direction. MMGEX charges 1.41%/yr vs 1.48%/yr for OBMCX.

Performance

MMGEX vs. OBMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MassMutual Small Cap Growth Equity Fund (MMGEX) and Oberweis Micro Cap Fund (OBMCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MMGEX achieves a 20.51% return, which is significantly lower than OBMCX's 35.57% return. Over the past 10 years, MMGEX has underperformed OBMCX with an annualized return of 14.72%, while OBMCX has yielded a comparatively higher 20.12% annualized return.

MMGEX

• 1D: 3.12%
• 1M: -3.67%
• 6M: 14.34%
• YTD: 20.51%
• 1Y: 35.12%
• 3Y*: 16.33%
• 5Y*: 5.81%
• 10Y*: 14.72%
• ALL TIME*: 8.20%

OBMCX

• 1D: 5.04%
• 1M: -6.99%
• 6M: 28.25%
• YTD: 35.57%
• 1Y: 52.75%
• 3Y*: 22.46%
• 5Y*: 18.01%
• 10Y*: 20.12%
• ALL TIME*: 11.14%

*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)
MMGEX MassMutual Small Cap Growth Equity Fund	$0.00	$0.00	$0.00
OBMCX Oberweis Micro Cap Fund	$0.00	$0.00	$0.00

MMGEX vs. OBMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MMGEX MassMutual Small Cap Growth Equity Fund	20.51%	10.66%	14.79%	16.35%	-26.21%	8.52%	40.08%	61.40%	-5.46%	24.28%
OBMCX Oberweis Micro Cap Fund	35.57%	14.70%	22.82%	18.87%	-10.57%	53.20%	29.91%	21.94%	-12.04%	27.90%

Correlation

The correlation between MMGEX and OBMCX is 0.88, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.88
Correlation (3Y) Balances recent behavior with more history.	0.90
Correlation (5Y) Shows whether the relationship held over a longer period.	0.91
Correlation (10Y) Provides a long-term view across more market conditions.	0.91
Correlation (All Time) Calculated using the full available price history since Apr 30, 1999	0.86

The correlation between MMGEX and OBMCX has been stable across timeframes, ranging from 0.86 to 0.91 - a consistent structural relationship.

Return for Risk

MMGEX vs. OBMCX — Risk / Return Rank

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

MMGEX

MMGEX Risk / Return Rank: 66
MMGEX Sharpe Ratio Rank: 56
MMGEX Sortino Ratio Rank: 56
MMGEX Omega Ratio Rank: 49
MMGEX Calmar Ratio Rank: 85
MMGEX Martin Ratio Rank: 84

OBMCX

OBMCX Risk / Return Rank: 79
OBMCX Sharpe Ratio Rank: 78
OBMCX Sortino Ratio Rank: 72
OBMCX Omega Ratio Rank: 70
OBMCX Calmar Ratio Rank: 86
OBMCX Martin Ratio Rank: 90

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.

MMGEX vs. OBMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MassMutual Small Cap Growth Equity Fund (MMGEX) and Oberweis Micro Cap Fund (OBMCX). 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.

	MMGEX	OBMCX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	1.79	-0.32
Sortino ratio: Return per unit of downside risk	2.12	2.38	-0.26
Omega ratio: Gain probability vs. loss probability	1.25	1.30	-0.04
Calmar ratio: Return relative to maximum drawdown	3.01	2.99	+0.02
Martin ratio: Return relative to average drawdown	10.77	12.18	-1.41

MMGEX vs. OBMCX - Sharpe Ratio Comparison

The current MMGEX Sharpe Ratio is 1.47, which is comparable to the OBMCX Sharpe Ratio of 1.79. The chart below compares the historical Sharpe Ratios of MMGEX and OBMCX, 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

MMGEX vs. OBMCX - Drawdown Comparison

The maximum MMGEX drawdown since its inception was -63.65%, smaller than the maximum OBMCX drawdown of -68.24%. Use the drawdown chart below to compare losses from any high point for MMGEX and OBMCX.

Drawdown Indicators

	MMGEX	OBMCX	Difference
Max Drawdown Largest peak-to-trough decline	-63.65%	-68.24%	+4.59%
Max Drawdown (1Y) Largest decline over 1 year	-10.47%	-17.19%	+6.72%
Max Drawdown (3Y) Largest decline over 3 years	-27.79%	-28.11%	+0.32%
Max Drawdown (5Y) Largest decline over 5 years	-51.21%	-28.11%	-23.10%
Max Drawdown (10Y) Largest decline over 10 years	-51.21%	-50.04%	-1.17%
Current Drawdown Current decline from peak	-6.88%	-13.01%	+6.13%
Average Drawdown Average peak-to-trough decline	-23.31%	-16.36%	-6.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.94%	4.21%	-1.27%

Volatility

MMGEX vs. OBMCX - Volatility Comparison

The current volatility for MassMutual Small Cap Growth Equity Fund (MMGEX) is 6.74%, while Oberweis Micro Cap Fund (OBMCX) has a volatility of 11.67%. This indicates that MMGEX experiences smaller price fluctuations and is considered to be less risky than OBMCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MMGEX	OBMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.74%	11.67%	-4.93%
Volatility (6M) Calculated over the trailing 6-month period	17.21%	23.58%	-6.37%
Volatility (1Y) Calculated over the trailing 1-year period	21.45%	28.71%	-7.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	32.60%	26.80%	+5.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	29.04%	26.25%	+2.79%

MMGEX vs. OBMCX - Expense Ratio Comparison

MMGEX has a 1.41% expense ratio, which is lower than OBMCX's 1.48% expense ratio.

Dividends

MMGEX vs. OBMCX - Dividend Comparison

MMGEX's dividend yield for the trailing twelve months is around 31.48%, more than OBMCX's 1.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MMGEX MassMutual Small Cap Growth Equity Fund	31.48%	37.94%	8.94%	0.00%	0.00%	44.40%	10.36%	32.83%	29.40%	6.91%	0.00%	33.83%
OBMCX Oberweis Micro Cap Fund	1.04%	1.41%	2.53%	0.00%	1.37%	24.35%	0.00%	0.00%	19.67%	11.76%	0.05%	3.07%

Frequently Asked Questions

Can I hold both MMGEX and OBMCX in my portfolio?

MMGEX and OBMCX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MMGEX or OBMCX?

OBMCX has higher volatility (11.67%) compared to MMGEX (6.74%). In terms of maximum drawdown, MMGEX dropped -63.65% vs OBMCX's -68.24%.

Which has better risk-adjusted returns?

OBMCX currently has the higher Sharpe Ratio (1.79 vs 1.47), 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.