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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in Oberweis Small-Cap Opportunities Fund, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
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Returns By Period
Oberweis Small-Cap Opportunities Fund (OBSOX) has returned -0.48% so far this year and 28.05% over the past 12 months. Looking at the last ten years, OBSOX has achieved an annualized return of 15.43%, outperforming the S&P 500 Index benchmark, which averaged 12.16% per year.
Oberweis Small-Cap Opportunities Fund
- 1D
- -3.30%
- 1M
- -8.84%
- YTD
- -0.48%
- 6M
- 3.09%
- 1Y
- 28.05%
- 3Y*
- 11.23%
- 5Y*
- 10.87%
- 10Y*
- 15.43%
Benchmark (S&P 500 Index)
- 1D
- 2.91%
- 1M
- -5.09%
- YTD
- -4.63%
- 6M
- -2.39%
- 1Y
- 16.33%
- 3Y*
- 16.69%
- 5Y*
- 10.18%
- 10Y*
- 12.16%
Monthly Returns
Based on dividend-adjusted daily data since Sep 16, 1996, OBSOX's average daily return is +0.05%, while the average monthly return is +0.95%. At this rate, your investment would double in approximately 6.1 years.
Historically, 59% of months were positive and 41% 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% | -8.84% | -0.48% | |||||||||
| 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 1.11%, beta of 1.18, and R² of 0.64 versus S&P 500 Index. Calculated based on daily prices since September 17, 1996.
- This fund captured 131.98% 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
- 1.11%
- Beta
- 1.18
- R²
- 0.64
- Upside Capture
- 131.98%
- 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 57 for risk / return — on par with similar mutual funds. You're getting a typical balance of risk and reward. Not a standout, but not a red flag either — a reasonable choice if other factors align with your goals.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Oberweis Small-Cap Opportunities Fund (OBSOX) and compare them to a chosen benchmark (S&P 500 Index).
| OBSOX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.99 | 0.90 | +0.09 |
Sortino ratioReturn per unit of downside risk | 1.50 | 1.39 | +0.12 |
Omega ratioGain probability vs. loss probability | 1.20 | 1.21 | -0.01 |
Calmar ratioReturn relative to maximum drawdown | 1.65 | 1.40 | +0.25 |
Martin ratioReturn relative to average drawdown | 6.39 | 6.61 | -0.22 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Explore OBSOX risk-adjusted metrics in detail
Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.
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 | |||||||||
| 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 11.40%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -80.52% | Mar 13, 2000 | 2188 | Nov 20, 2008 | 2227 | Sep 27, 2017 | 4415 |
| -44.23% | Oct 10, 1997 | 251 | Oct 8, 1998 | 58 | Dec 31, 1998 | 309 |
| -42.79% | Feb 20, 2020 | 20 | Mar 18, 2020 | 95 | Aug 3, 2020 | 115 |
| -28.65% | Nov 17, 2021 | 146 | Jun 16, 2022 | 268 | Jul 13, 2023 | 414 |
| -28.6% | Sep 5, 2018 | 77 | Dec 24, 2018 | 264 | Jan 13, 2020 | 341 |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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