OBIOX vs. WISIX
Compare and contrast key facts about Oberweis International Opportunities Fund (OBIOX) and William Blair International Small Cap Growth Fund (WISIX).
OBIOX is managed by Oberweis. It was launched on Jan 31, 2007. WISIX is managed by William Blair. It was launched on Oct 31, 2005.
Performance
OBIOX vs. WISIX - Performance Comparison
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OBIOX vs. WISIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OBIOX Oberweis International Opportunities Fund | -2.51% | 30.71% | 7.54% | 4.90% | -37.06% | 1.41% | 62.87% | 22.87% | -26.57% | 40.90% |
WISIX William Blair International Small Cap Growth Fund | -1.49% | 15.31% | 0.80% | 14.72% | -34.99% | 11.01% | 29.09% | 34.22% | -24.27% | 32.71% |
Returns By Period
In the year-to-date period, OBIOX achieves a -2.51% return, which is significantly lower than WISIX's -1.49% return. Over the past 10 years, OBIOX has outperformed WISIX with an annualized return of 6.27%, while WISIX has yielded a comparatively lower 4.97% annualized return.
OBIOX
- 1D
- 3.69%
- 1M
- -11.47%
- YTD
- -2.51%
- 6M
- -2.58%
- 1Y
- 21.90%
- 3Y*
- 10.98%
- 5Y*
- -1.93%
- 10Y*
- 6.27%
WISIX
- 1D
- 2.21%
- 1M
- -7.05%
- YTD
- -1.49%
- 6M
- -2.88%
- 1Y
- 11.85%
- 3Y*
- 6.99%
- 5Y*
- -0.95%
- 10Y*
- 4.97%
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OBIOX vs. WISIX - Expense Ratio Comparison
OBIOX has a 1.60% expense ratio, which is higher than WISIX's 1.23% expense ratio.
Return for Risk
OBIOX vs. WISIX — Risk / Return Rank
OBIOX
WISIX
OBIOX vs. WISIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Oberweis International Opportunities Fund (OBIOX) and William Blair International Small Cap Growth Fund (WISIX). 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.
| OBIOX | WISIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.22 | 0.83 | +0.40 |
Sortino ratioReturn per unit of downside risk | 1.64 | 1.17 | +0.47 |
Omega ratioGain probability vs. loss probability | 1.24 | 1.17 | +0.07 |
Calmar ratioReturn relative to maximum drawdown | 1.30 | 0.95 | +0.35 |
Martin ratioReturn relative to average drawdown | 4.93 | 2.68 | +2.25 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| OBIOX | WISIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.22 | 0.83 | +0.40 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.10 | -0.06 | -0.04 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.32 | 0.29 | +0.03 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.35 | 0.31 | +0.04 |
Correlation
The correlation between OBIOX and WISIX is 0.88, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
OBIOX vs. WISIX - Dividend Comparison
OBIOX's dividend yield for the trailing twelve months is around 1.13%, more than WISIX's 0.62% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OBIOX Oberweis International Opportunities Fund | 1.13% | 1.10% | 1.27% | 0.43% | 0.00% | 20.69% | 0.40% | 1.23% | 17.03% | 11.47% | 0.07% | 0.19% |
WISIX William Blair International Small Cap Growth Fund | 0.62% | 0.61% | 1.78% | 0.88% | 0.21% | 16.20% | 2.09% | 0.31% | 13.84% | 9.94% | 0.36% | 2.31% |
Drawdowns
OBIOX vs. WISIX - Drawdown Comparison
The maximum OBIOX drawdown since its inception was -71.17%, which is greater than WISIX's maximum drawdown of -64.84%. Use the drawdown chart below to compare losses from any high point for OBIOX and WISIX.
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Drawdown Indicators
| OBIOX | WISIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -71.17% | -64.84% | -6.33% |
Max Drawdown (1Y)Largest decline over 1 year | -15.64% | -10.09% | -5.55% |
Max Drawdown (5Y)Largest decline over 5 years | -51.47% | -47.76% | -3.71% |
Max Drawdown (10Y)Largest decline over 10 years | -51.47% | -47.76% | -3.71% |
Current DrawdownCurrent decline from peak | -20.52% | -21.04% | +0.52% |
Average DrawdownAverage peak-to-trough decline | -21.53% | -16.61% | -4.92% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.13% | 3.66% | +0.47% |
Volatility
OBIOX vs. WISIX - Volatility Comparison
Oberweis International Opportunities Fund (OBIOX) has a higher volatility of 8.29% compared to William Blair International Small Cap Growth Fund (WISIX) at 6.54%. This indicates that OBIOX's price experiences larger fluctuations and is considered to be riskier than WISIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OBIOX | WISIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.29% | 6.54% | +1.75% |
Volatility (6M)Calculated over the trailing 6-month period | 12.42% | 10.13% | +2.29% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.35% | 15.20% | +3.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.72% | 17.23% | +2.49% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.67% | 17.24% | +2.43% |