OBIIX vs. VFSAX
Compare and contrast key facts about Oberweis International Opportunities Institutional Fund (OBIIX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX).
OBIIX is managed by Oberweis. It was launched on Mar 9, 2014. VFSAX is managed by Vanguard. It was launched on Feb 7, 2019.
Performance
OBIIX vs. VFSAX - Performance Comparison
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OBIIX vs. VFSAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
OBIIX Oberweis International Opportunities Institutional Fund | -2.43% | 31.07% | 4.35% | 5.72% | -37.45% | 1.92% | 63.66% | 11.03% |
VFSAX Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares | 1.27% | 29.89% | 2.58% | 15.13% | -21.30% | 12.68% | 11.90% | 13.47% |
Returns By Period
In the year-to-date period, OBIIX achieves a -2.43% return, which is significantly lower than VFSAX's 1.27% return.
OBIIX
- 1D
- 3.70%
- 1M
- -11.44%
- YTD
- -2.43%
- 6M
- -2.47%
- 1Y
- 22.23%
- 3Y*
- 10.30%
- 5Y*
- -2.35%
- 10Y*
- 6.59%
VFSAX
- 1D
- 2.40%
- 1M
- -8.22%
- YTD
- 1.27%
- 6M
- 3.64%
- 1Y
- 29.20%
- 3Y*
- 13.60%
- 5Y*
- 5.33%
- 10Y*
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OBIIX vs. VFSAX - Expense Ratio Comparison
OBIIX has a 1.10% expense ratio, which is higher than VFSAX's 0.16% expense ratio.
Return for Risk
OBIIX vs. VFSAX — Risk / Return Rank
OBIIX
VFSAX
OBIIX vs. VFSAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Oberweis International Opportunities Institutional Fund (OBIIX) and Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX). 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.
| OBIIX | VFSAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.24 | 2.06 | -0.81 |
Sortino ratioReturn per unit of downside risk | 1.65 | 2.63 | -0.97 |
Omega ratioGain probability vs. loss probability | 1.25 | 1.41 | -0.16 |
Calmar ratioReturn relative to maximum drawdown | 1.32 | 2.49 | -1.17 |
Martin ratioReturn relative to average drawdown | 5.01 | 9.78 | -4.77 |
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
| OBIIX | VFSAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.24 | 2.06 | -0.81 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.12 | 0.36 | -0.48 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.34 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.30 | 0.48 | -0.18 |
Correlation
The correlation between OBIIX and VFSAX is 0.84, 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
OBIIX vs. VFSAX - Dividend Comparison
OBIIX's dividend yield for the trailing twelve months is around 1.13%, less than VFSAX's 3.27% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OBIIX Oberweis International Opportunities Institutional Fund | 1.13% | 1.10% | 0.00% | 1.93% | 0.00% | 31.91% | 0.51% | 1.31% | 13.63% | 7.30% | 0.40% | 0.55% |
VFSAX Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares | 3.27% | 3.31% | 3.36% | 3.06% | 2.22% | 2.67% | 1.85% | 3.19% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
OBIIX vs. VFSAX - Drawdown Comparison
The maximum OBIIX drawdown since its inception was -51.22%, which is greater than VFSAX's maximum drawdown of -39.86%. Use the drawdown chart below to compare losses from any high point for OBIIX and VFSAX.
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Drawdown Indicators
| OBIIX | VFSAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -51.22% | -39.86% | -11.36% |
Max Drawdown (1Y)Largest decline over 1 year | -15.67% | -11.48% | -4.19% |
Max Drawdown (5Y)Largest decline over 5 years | -51.22% | -33.81% | -17.41% |
Max Drawdown (10Y)Largest decline over 10 years | -51.22% | — | — |
Current DrawdownCurrent decline from peak | -22.39% | -9.36% | -13.03% |
Average DrawdownAverage peak-to-trough decline | -17.27% | -9.42% | -7.85% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.12% | 2.92% | +1.20% |
Volatility
OBIIX vs. VFSAX - Volatility Comparison
Oberweis International Opportunities Institutional Fund (OBIIX) has a higher volatility of 8.28% compared to Vanguard FTSE All-World ex-US Small-Cap Index Fund Admiral Shares (VFSAX) at 6.64%. This indicates that OBIIX's price experiences larger fluctuations and is considered to be riskier than VFSAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OBIIX | VFSAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.28% | 6.64% | +1.64% |
Volatility (6M)Calculated over the trailing 6-month period | 12.43% | 10.11% | +2.32% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.36% | 14.58% | +3.78% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.63% | 14.90% | +4.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.54% | 17.03% | +2.51% |