WISIX vs. WBIIX
Compare and contrast key facts about William Blair International Small Cap Growth Fund (WISIX) and William Blair Institutional International Growth Fund (WBIIX).
WISIX is managed by William Blair. It was launched on Oct 31, 2005. WBIIX is managed by William Blair. It was launched on Jul 25, 2002.
Performance
WISIX vs. WBIIX - Performance Comparison
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WISIX vs. WBIIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
WISIX William Blair International Small Cap Growth Fund | -3.63% | 15.31% | 0.80% | 14.72% | -34.99% | 11.01% | 29.09% | 34.22% | -24.27% | 32.71% |
WBIIX William Blair Institutional International Growth Fund | -3.55% | 18.16% | 2.40% | 15.23% | -28.39% | 9.30% | 32.69% | 30.75% | -17.49% | 29.51% |
Returns By Period
The year-to-date returns for both investments are quite close, with WISIX having a -3.63% return and WBIIX slightly higher at -3.55%. Over the past 10 years, WISIX has underperformed WBIIX with an annualized return of 4.74%, while WBIIX has yielded a comparatively higher 7.09% annualized return.
WISIX
- 1D
- -1.60%
- 1M
- -9.06%
- YTD
- -3.63%
- 6M
- -4.98%
- 1Y
- 9.43%
- 3Y*
- 6.21%
- 5Y*
- -1.02%
- 10Y*
- 4.74%
WBIIX
- 1D
- -1.14%
- 1M
- -12.89%
- YTD
- -3.55%
- 6M
- -1.60%
- 1Y
- 13.88%
- 3Y*
- 7.44%
- 5Y*
- 1.27%
- 10Y*
- 7.09%
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WISIX vs. WBIIX - Expense Ratio Comparison
WISIX has a 1.23% expense ratio, which is higher than WBIIX's 0.98% expense ratio.
Return for Risk
WISIX vs. WBIIX — Risk / Return Rank
WISIX
WBIIX
WISIX vs. WBIIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for William Blair International Small Cap Growth Fund (WISIX) and William Blair Institutional International Growth Fund (WBIIX). 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.
| WISIX | WBIIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.56 | 0.76 | -0.20 |
Sortino ratioReturn per unit of downside risk | 0.83 | 1.11 | -0.28 |
Omega ratioGain probability vs. loss probability | 1.12 | 1.17 | -0.05 |
Calmar ratioReturn relative to maximum drawdown | 0.66 | 0.86 | -0.20 |
Martin ratioReturn relative to average drawdown | 2.01 | 3.41 | -1.40 |
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
| WISIX | WBIIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.56 | 0.76 | -0.20 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.06 | 0.08 | -0.14 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.28 | 0.42 | -0.14 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.31 | 0.40 | -0.09 |
Correlation
The correlation between WISIX and WBIIX is 0.93, 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
WISIX vs. WBIIX - Dividend Comparison
WISIX's dividend yield for the trailing twelve months is around 0.63%, less than WBIIX's 12.99% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WISIX William Blair International Small Cap Growth Fund | 0.63% | 0.61% | 1.78% | 0.88% | 0.21% | 16.20% | 2.09% | 0.31% | 13.84% | 9.94% | 0.36% | 2.31% |
WBIIX William Blair Institutional International Growth Fund | 12.99% | 12.53% | 7.49% | 2.51% | 6.57% | 16.58% | 12.61% | 0.95% | 11.74% | 4.16% | 1.15% | 1.28% |
Drawdowns
WISIX vs. WBIIX - Drawdown Comparison
The maximum WISIX drawdown since its inception was -64.84%, roughly equal to the maximum WBIIX drawdown of -65.13%. Use the drawdown chart below to compare losses from any high point for WISIX and WBIIX.
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Drawdown Indicators
| WISIX | WBIIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -64.84% | -65.13% | +0.29% |
Max Drawdown (1Y)Largest decline over 1 year | -10.09% | -13.17% | +3.08% |
Max Drawdown (5Y)Largest decline over 5 years | -47.76% | -40.91% | -6.85% |
Max Drawdown (10Y)Largest decline over 10 years | -47.76% | -40.91% | -6.85% |
Current DrawdownCurrent decline from peak | -22.75% | -13.17% | -9.58% |
Average DrawdownAverage peak-to-trough decline | -16.60% | -14.89% | -1.71% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.67% | 3.33% | +0.34% |
Volatility
WISIX vs. WBIIX - Volatility Comparison
The current volatility for William Blair International Small Cap Growth Fund (WISIX) is 6.00%, while William Blair Institutional International Growth Fund (WBIIX) has a volatility of 7.03%. This indicates that WISIX experiences smaller price fluctuations and is considered to be less risky than WBIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WISIX | WBIIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.00% | 7.03% | -1.03% |
Volatility (6M)Calculated over the trailing 6-month period | 9.88% | 11.37% | -1.49% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.08% | 16.47% | -1.39% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.21% | 16.48% | +0.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.23% | 17.02% | +0.21% |