- ISIN
- US6743753088
- CUSIP
- 674375308
- Issuer
- Oberweis
- Inception Date
- Sep 16, 1996
- Category
- Small Cap Growth Equities
- Min. Investment
- $1,000
- Distribution Policy
- Accumulating
- Asset Class
- Equity
- Asset Class Size
- Small-Cap
- Asset Class Style
- Growth
Share Price Chart
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Performance
OBSOX Performance Chart
Oberweis Small-Cap Opportunities Fund (OBSOX) is up 32.7% since the beginning of the year. OBSOX is currently trading at $39 per share. Investors who bought $1,000 worth of OBSOX shares 5 years ago would now be looking at an investment worth $2,119.
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Returns By Period
Oberweis Small-Cap Opportunities Fund (OBSOX) has returned 32.65% so far this year and 58.95% over the past 12 months. Looking at the last ten years, OBSOX has achieved an annualized return of 18.67%, outperforming the S&P 500 Index benchmark, which averaged 13.75% per year.
Oberweis Small-Cap Opportunities Fund
- 1D
- 1.34%
- 1M
- 5.11%
- YTD
- 32.65%
- 6M
- 33.47%
- 1Y
- 58.95%
- 3Y*
- 22.87%
- 5Y*
- 16.20%
- 10Y*
- 18.67%
Benchmark (S&P 500 Index)
- 1D
- 0.13%
- 1M
- 5.25%
- YTD
- 11.16%
- 6M
- 11.43%
- 1Y
- 28.20%
- 3Y*
- 21.12%
- 5Y*
- 12.66%
- 10Y*
- 13.75%
OBSOX Monthly Returns History
Based on dividend-adjusted daily data since Sep 16, 1996, OBSOX's average daily return is +0.05%, while the average monthly return is +1.02%. At this rate, an investment would double in approximately 5.7 years.
Historically, 60% of months were positive and 40% were negative. The best month was Feb 2000 with a return of +28.5%, while the worst month was Feb 2001 at -30.6%. The longest winning streak lasted 9 consecutive months, and the longest losing streak was 6 months.
On a daily basis, OBSOX closed higher 53% of trading days. The best single day was Nov 9, 2000 with a return of +20.5%, while the worst single day was Nov 10, 2000 at -23.2%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1.54% | 7.51% | -5.00% | 19.50% | 5.62% | 1.34% | 32.65% | ||||||
| 2025 | 6.16% | -7.58% | -9.48% | 1.10% | 5.33% | 7.92% | -0.46% | 5.75% | 2.67% | 1.10% | 2.39% | 0.07% | 14.28% |
| 2024 | -0.77% | 6.42% | 4.24% | -3.41% | 8.42% | -0.31% | 1.89% | 1.27% | 1.56% | -4.58% | 7.36% | -5.87% | 16.13% |
| 2023 | 11.36% | 0.56% | -0.75% | -6.03% | 0.35% | 8.94% | 5.04% | -3.62% | -5.89% | -8.47% | 8.78% | 6.91% | 15.81% |
| 2022 | -12.02% | 3.80% | 1.58% | -8.31% | -0.05% | -8.74% | 14.24% | -1.57% | -7.40% | 11.78% | 6.22% | -7.39% | -11.17% |
| 2021 | 3.34% | 11.01% | 1.38% | 4.51% | 0.49% | 2.82% | -0.17% | 5.54% | -2.07% | 5.53% | 1.32% | 3.50% | 43.39% |
Benchmark Metrics
Oberweis Small-Cap Opportunities Fund has an annualized alpha of 1.36%, beta of 1.18, and R2 of 0.63 versus S&P 500 Index. Calculated based on daily prices since September 17, 1996.
- This fund captured 133.03% of S&P 500 Index gains and 123.67% of its losses - amplifying both gains and losses, but participating more in upside than downside.
- Alpha
- 1.36%
- Beta
- 1.18
- R²
- 0.63
- Upside Capture
- 133.03%
- Downside Capture
- 123.67%
Expense Ratio
OBSOX has a high expense ratio of 1.25%, indicating above-average management fees.
Return for Risk
Risk / Return Rank
OBSOX ranks 71 for risk / return — better than 71% of mutual funds on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Oberweis Small-Cap Opportunities Fund (OBSOX) and compare them to S&P 500 Index.
| OBSOX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 2.39 | 2.39 | +0.01 |
Sortino ratioReturn per unit of downside risk | 3.05 | 3.25 | -0.20 |
Omega ratioGain probability vs. loss probability | 1.39 | 1.43 | -0.04 |
Calmar ratioReturn relative to maximum drawdown | 5.34 | 3.11 | +2.23 |
Martin ratioReturn relative to average drawdown | 19.72 | 14.38 | +5.34 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Dividends
Dividend History
Oberweis Small-Cap Opportunities Fund provided a 0.00% dividend yield over the last twelve months, with an annual payout of $0.00 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.00 | $0.00 | $0.20 | $0.00 | $0.03 | $4.71 | $0.74 | $0.44 | $3.34 | $1.04 | $0.59 | $1.61 |
Dividend yield | 0.00% | 0.00% | 0.80% | 0.00% | 0.17% | 21.88% | 4.05% | 3.04% | 28.22% | 6.36% | 4.24% | 11.91% |
Monthly Dividends
The table displays the monthly dividend distributions for Oberweis Small-Cap Opportunities Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | ||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.20 | $0.20 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.03 | $0.03 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $4.71 | $4.71 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the Oberweis Small-Cap Opportunities Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Oberweis Small-Cap Opportunities Fund was 80.52%, occurring on Nov 20, 2008. Recovery took 2227 trading sessions.
The current Oberweis Small-Cap Opportunities Fund drawdown is 0.62%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Financial crisis2007–2009 | -80.52%Nov 2008 | 8y 8mo | 8y 10mo | 17y 6moMar 2000 - Sep 2017 |
1998 bear market1998 | -44.23%Oct 1998 | 12mo 3d | 2mo 24d | 1y 2moOct 1997 - Dec 1998 |
COVID crash2020 | -42.79%Mar 2020 | 27d | 4mo 18d | 5mo 15dFeb 2020 - Aug 2020 |
Bear market2022 | -28.65%Jun 2022 | 7mo 1d | 1y 27d | 1y 7moNov 2021 - Jul 2023 |
Rate-hike selloffLate 2018 | -28.60%Dec 2018 | 3mo 20d | 1y 20d | 1y 4moSep 2018 - Jan 2020 |
Drawdown Indicators
| OBSOX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -80.52% | -56.78% | -23.74% |
Max Drawdown (1Y)Largest decline over 1 year | -11.40% | -9.10% | -2.30% |
Max Drawdown (3Y)Largest decline over 3 years | -27.74% | -18.90% | -8.84% |
Max Drawdown (5Y)Largest decline over 5 years | -28.65% | -25.43% | -3.22% |
Max Drawdown (10Y)Largest decline over 10 years | -42.79% | -33.92% | -8.87% |
Current DrawdownCurrent decline from peak | -0.62% | 0.00% | -0.62% |
Average DrawdownAverage peak-to-trough decline | -30.55% | -10.72% | -19.83% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.07% | 1.97% | +1.10% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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