OBMCX vs. NEAGX

Last updated Aug 4, 2026

OBMCX (Oberweis Micro Cap Fund) and NEAGX (Needham Aggressive Growth Fund Retail Class) are both Small Cap Growth Equities funds. Over the past 10 years, OBMCX returned 20.26%/yr vs 19.85%/yr for NEAGX. Their correlation of 0.82 means they have usually moved in the same direction. OBMCX charges 1.48%/yr vs 1.64%/yr for NEAGX.

Performance

OBMCX vs. NEAGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oberweis Micro Cap Fund (OBMCX) and Needham Aggressive Growth Fund Retail Class (NEAGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OBMCX achieves a 35.75% return, which is significantly higher than NEAGX's 33.20% return. Both investments have delivered pretty close results over the past 10 years, with OBMCX having a 20.26% annualized return and NEAGX not far behind at 19.85%.

OBMCX

• 1D: 0.13%
• 1M: -6.87%
• 6M: 26.93%
• YTD: 35.75%
• 1Y: 52.95%
• 3Y*: 22.57%
• 5Y*: 18.04%
• 10Y*: 20.26%
• ALL TIME*: 11.14%

NEAGX

• 1D: 0.99%
• 1M: -11.25%
• 6M: 19.05%
• YTD: 33.20%
• 1Y: 50.65%
• 3Y*: 24.73%
• 5Y*: 17.37%
• 10Y*: 19.85%
• ALL TIME*: 12.98%

*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)
NEAGX Needham Aggressive Growth Fund Retail Class	$0.00	$0.00	$0.00
OBMCX Oberweis Micro Cap Fund	$0.00	$0.00	$0.00

OBMCX vs. NEAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OBMCX Oberweis Micro Cap Fund	35.75%	14.70%	22.82%	18.87%	-10.57%	53.20%	29.91%	21.94%	-12.04%	27.90%
NEAGX Needham Aggressive Growth Fund Retail Class	33.20%	26.40%	14.31%	37.65%	-27.53%	37.56%	51.53%	43.82%	-16.09%	8.75%

Correlation

The correlation between OBMCX and NEAGX is 0.90, 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.	0.90
Correlation (3Y) Balances recent behavior with more history.	0.88
Correlation (5Y) Shows whether the relationship held over a longer period.	0.88
Correlation (10Y) Provides a long-term view across more market conditions.	0.85
Correlation (All Time) Calculated using the full available price history since Aug 31, 2001	0.82

The correlation between OBMCX and NEAGX has been stable across timeframes, ranging from 0.82 to 0.90 - a consistent structural relationship.

Return for Risk

OBMCX vs. NEAGX — Risk / Return Rank

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

OBMCX

OBMCX Risk / Return Rank: 73
OBMCX Sharpe Ratio Rank: 71
OBMCX Sortino Ratio Rank: 63
OBMCX Omega Ratio Rank: 59
OBMCX Calmar Ratio Rank: 84
OBMCX Martin Ratio Rank: 87

NEAGX

NEAGX Risk / Return Rank: 53
NEAGX Sharpe Ratio Rank: 58
NEAGX Sortino Ratio Rank: 48
NEAGX Omega Ratio Rank: 46
NEAGX Calmar Ratio Rank: 49
NEAGX Martin Ratio Rank: 61

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.

OBMCX vs. NEAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oberweis Micro Cap Fund (OBMCX) and Needham Aggressive Growth Fund Retail Class (NEAGX). 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.

	OBMCX	NEAGX	Difference
Sharpe ratio: Return per unit of total volatility	1.74	1.55	+0.19
Sortino ratio: Return per unit of downside risk	2.32	2.04	+0.29
Omega ratio: Gain probability vs. loss probability	1.29	1.26	+0.03
Calmar ratio: Return relative to maximum drawdown	2.90	1.99	+0.92
Martin ratio: Return relative to average drawdown	11.60	8.42	+3.18

OBMCX vs. NEAGX - Sharpe Ratio Comparison

The current OBMCX Sharpe Ratio is 1.74, which is comparable to the NEAGX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of OBMCX and NEAGX, 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

OBMCX vs. NEAGX - Drawdown Comparison

The maximum OBMCX drawdown since its inception was -68.24%, which is greater than NEAGX's maximum drawdown of -41.80%. Use the drawdown chart below to compare losses from any high point for OBMCX and NEAGX.

Drawdown Indicators

	OBMCX	NEAGX	Difference
Max Drawdown Largest peak-to-trough decline	-68.24%	-41.80%	-26.44%
Max Drawdown (1Y) Largest decline over 1 year	-17.19%	-24.12%	+6.93%
Max Drawdown (3Y) Largest decline over 3 years	-28.11%	-28.49%	+0.38%
Max Drawdown (5Y) Largest decline over 5 years	-28.11%	-36.31%	+8.20%
Max Drawdown (10Y) Largest decline over 10 years	-50.04%	-36.31%	-13.73%
Current Drawdown Current decline from peak	-12.90%	-19.72%	+6.82%
Average Drawdown Average peak-to-trough decline	-16.36%	-8.67%	-7.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.29%	5.68%	-1.39%

Volatility

OBMCX vs. NEAGX - Volatility Comparison

The current volatility for Oberweis Micro Cap Fund (OBMCX) is 11.59%, while Needham Aggressive Growth Fund Retail Class (NEAGX) has a volatility of 12.98%. This indicates that OBMCX experiences smaller price fluctuations and is considered to be less risky than NEAGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OBMCX	NEAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.59%	12.98%	-1.39%
Volatility (6M) Calculated over the trailing 6-month period	23.58%	26.28%	-2.70%
Volatility (1Y) Calculated over the trailing 1-year period	28.71%	30.85%	-2.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.79%	25.65%	+1.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.25%	24.70%	+1.55%

OBMCX vs. NEAGX - Expense Ratio Comparison

OBMCX has a 1.48% expense ratio, which is lower than NEAGX's 1.64% expense ratio.

Dividends

OBMCX vs. NEAGX - Dividend Comparison

OBMCX's dividend yield for the trailing twelve months is around 1.04%, less than NEAGX's 1.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NEAGX Needham Aggressive Growth Fund Retail Class	1.61%	2.14%	0.00%	0.00%	0.00%	7.10%	3.91%	10.64%	16.57%	5.17%	6.72%	11.88%
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 OBMCX and NEAGX in my portfolio?

With a correlation of 0.90, OBMCX and NEAGX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, OBMCX or NEAGX?

NEAGX has higher volatility (12.98%) compared to OBMCX (11.59%). In terms of maximum drawdown, OBMCX dropped -68.24% vs NEAGX's -41.80%.

Which has better risk-adjusted returns?

OBMCX currently has the higher Sharpe Ratio (1.74 vs 1.55), 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.