JSML vs. OBMCX

Last updated Jun 23, 2026

JSML (Janus Henderson Small Cap Growth Alpha ETF) and OBMCX (Oberweis Micro Cap Fund) are both Small Cap Growth Equities funds. Over the past 10 years, JSML returned 13.77%/yr vs 22.03%/yr for OBMCX. Their correlation of 0.84 suggests significant overlap in exposure. JSML charges 0.30%/yr vs 1.48%/yr for OBMCX.

Performance

JSML vs. OBMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Janus Henderson Small Cap Growth Alpha ETF (JSML) 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, JSML achieves a 25.69% return, which is significantly lower than OBMCX's 50.06% return. Over the past 10 years, JSML has underperformed OBMCX with an annualized return of 13.77%, while OBMCX has yielded a comparatively higher 22.03% annualized return.

JSML

• 1D: 1.23%
• 1M: 9.04%
• YTD: 25.69%
• 6M: 21.85%
• 1Y: 41.85%
• 3Y*: 20.38%
• 5Y*: 7.21%
• 10Y*: 13.77%

OBMCX

• 1D: 2.68%
• 1M: 6.77%
• YTD: 50.06%
• 6M: 45.35%
• 1Y: 81.20%
• 3Y*: 29.33%
• 5Y*: 20.91%
• 10Y*: 22.03%

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

JSML vs. OBMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
JSML Janus Henderson Small Cap Growth Alpha ETF	25.69%	13.41%	12.45%	30.09%	-29.40%	3.08%	35.38%	32.50%	-2.53%	20.93%
OBMCX Oberweis Micro Cap Fund	50.06%	14.70%	22.82%	18.87%	-10.57%	53.20%	29.91%	21.94%	-12.04%	27.90%

Correlation

The correlation between JSML and OBMCX is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since Feb 25, 2016	0.84

The correlation between JSML and OBMCX has been stable across timeframes, ranging from 0.84 to 0.89 - a consistent structural relationship.

Return for Risk

JSML vs. OBMCX — Risk / Return Rank

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

JSML

JSML Risk / Return Rank: 57
JSML Sharpe Ratio Rank: 58
JSML Sortino Ratio Rank: 55
JSML Omega Ratio Rank: 53
JSML Calmar Ratio Rank: 59
JSML Martin Ratio Rank: 59

OBMCX

OBMCX Risk / Return Rank: 91
OBMCX Sharpe Ratio Rank: 96
OBMCX Sortino Ratio Rank: 85
OBMCX Omega Ratio Rank: 82
OBMCX Calmar Ratio Rank: 97
OBMCX Martin Ratio Rank: 97

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.

JSML vs. OBMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Small Cap Growth Alpha ETF (JSML) 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.

	JSML	OBMCX	Difference
Sharpe ratio: Return per unit of total volatility	1.89	3.13	-1.24
Sortino ratio: Return per unit of downside risk	2.57	3.74	-1.18
Omega ratio: Gain probability vs. loss probability	1.32	1.49	-0.17
Calmar ratio: Return relative to maximum drawdown	2.83	6.55	-3.72
Martin ratio: Return relative to average drawdown	10.04	25.93	-15.89

JSML vs. OBMCX - Sharpe Ratio Comparison

The current JSML Sharpe Ratio is 1.89, which is lower than the OBMCX Sharpe Ratio of 3.13. The chart below compares the historical Sharpe Ratios of JSML 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

JSML vs. OBMCX - Drawdown Comparison

The maximum JSML drawdown since its inception was -39.65%, smaller than the maximum OBMCX drawdown of -68.24%. Use the drawdown chart below to compare losses from any high point for JSML and OBMCX.

Drawdown Indicators

	JSML	OBMCX	Difference
Max Drawdown Largest peak-to-trough decline	-39.65%	-68.24%	+28.59%
Max Drawdown (1Y) Largest decline over 1 year	-14.84%	-12.45%	-2.39%
Max Drawdown (3Y) Largest decline over 3 years	-25.60%	-28.11%	+2.51%
Max Drawdown (5Y) Largest decline over 5 years	-37.91%	-28.11%	-9.80%
Max Drawdown (10Y) Largest decline over 10 years	-39.65%	-50.04%	+10.39%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-10.82%	-16.39%	+5.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.18%	3.14%	+1.04%

Volatility

JSML vs. OBMCX - Volatility Comparison

The current volatility for Janus Henderson Small Cap Growth Alpha ETF (JSML) is 7.33%, while Oberweis Micro Cap Fund (OBMCX) has a volatility of 10.07%. This indicates that JSML 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

	JSML	OBMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.33%	10.07%	-2.74%
Volatility (6M) Calculated over the trailing 6-month period	16.87%	20.24%	-3.37%
Volatility (1Y) Calculated over the trailing 1-year period	22.26%	26.06%	-3.80%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.50%	26.42%	-1.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.33%	26.00%	-1.67%

JSML vs. OBMCX - Expense Ratio Comparison

JSML has a 0.30% expense ratio, which is lower than OBMCX's 1.48% expense ratio.

Dividends

JSML vs. OBMCX - Dividend Comparison

JSML's dividend yield for the trailing twelve months is around 0.76%, less than OBMCX's 0.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
JSML Janus Henderson Small Cap Growth Alpha ETF	0.76%	0.94%	1.19%	0.49%	0.67%	0.46%	0.30%	0.27%	0.76%	0.42%	0.52%	0.00%
OBMCX Oberweis Micro Cap Fund	0.94%	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 JSML and OBMCX in my portfolio?

JSML and OBMCX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, JSML or OBMCX?

OBMCX has higher volatility (10.07%) compared to JSML (7.33%). In terms of maximum drawdown, JSML dropped -39.65% vs OBMCX's -68.24%.

Which has better risk-adjusted returns?

OBMCX currently has the higher Sharpe Ratio (3.13 vs 1.89), 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.