- ISIN
- US0930011889
- CUSIP
- 093001188
- Issuer
- William Blair
- Inception Date
- Oct 31, 2005
- Category
- Foreign Small & Mid Cap Equities
- Min. Investment
- $500,000
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Mid-Cap
- Asset Class Style
- Growth
Share Price Chart
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Performance
WISIX Performance Chart
William Blair International Small Cap Growth Fund (WISIX) is up 12.9% since the beginning of the year. WISIX is currently trading at $16 per share. Investors who bought $1,000 worth of WISIX shares 5 years ago would now be looking at an investment worth $1,033.
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Returns By Period
William Blair International Small Cap Growth Fund (WISIX) has returned 12.87% so far this year and 14.56% over the past 12 months. Over the last ten years, WISIX has returned 6.17% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.
William Blair International Small Cap Growth Fund
- 1D
- 0.76%
- 1M
- 0.19%
- YTD
- 12.87%
- 6M
- 13.76%
- 1Y
- 14.56%
- 3Y*
- 10.13%
- 5Y*
- 0.66%
- 10Y*
- 6.17%
Benchmark (S&P 500 Index)
- 1D
- -0.37%
- 1M
- -0.01%
- YTD
- 9.16%
- 6M
- 8.64%
- 1Y
- 25.22%
- 3Y*
- 19.78%
- 5Y*
- 11.99%
- 10Y*
- 13.88%
WISIX Monthly Returns History
Based on dividend-adjusted daily data since Nov 2, 2005, WISIX's average daily return is +0.03%, while the average monthly return is +0.68%. At this rate, an investment would double in approximately 8.5 years.
Historically, 60% of months were positive and 40% were negative. The best month was May 2009 with a return of +15.0%, while the worst month was Oct 2008 at -28.3%. The longest winning streak lasted 11 consecutive months, and the longest losing streak was 6 months.
On a daily basis, WISIX closed higher 52% of trading days. The best single day was Oct 13, 2008 with a return of +8.5%, while the worst single day was Mar 16, 2020 at -11.0%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2.28% | 4.80% | -8.10% | 12.42% | 3.66% | -1.67% | 12.87% | ||||||
| 2025 | 3.34% | -0.95% | -1.27% | 7.02% | 5.88% | 3.27% | -2.48% | 1.55% | 0.21% | -2.29% | -0.50% | 1.06% | 15.31% |
| 2024 | -3.63% | 2.35% | 0.33% | -4.24% | 3.07% | 0.25% | 3.63% | 3.34% | 1.08% | -5.10% | 1.85% | -1.58% | 0.80% |
| 2023 | 6.97% | -2.14% | 2.45% | 1.63% | -1.52% | 1.37% | 2.02% | -4.55% | -5.19% | -6.76% | 13.52% | 7.89% | 14.72% |
| 2022 | -15.36% | -6.26% | 0.00% | -10.73% | -1.85% | -12.07% | 10.71% | -5.72% | -10.82% | 6.17% | 11.72% | -3.69% | -34.99% |
| 2021 | -1.30% | 0.06% | -1.15% | 7.31% | 0.97% | 1.55% | 3.27% | 5.46% | -4.89% | 3.31% | -4.78% | 1.42% | 11.01% |
Benchmark Metrics
William Blair International Small Cap Growth Fund has an annualized alpha of -0.03%, beta of 0.74, and R2 of 0.60 versus S&P 500 Index. Calculated based on daily prices since November 02, 2005.
- This fund participated in 104.21% of S&P 500 Index downside but only 91.61% of its upside - more exposed to losses than it benefited from rallies.
- Alpha
- -0.03%
- Beta
- 0.74
- R²
- 0.60
- Upside Capture
- 91.61%
- Downside Capture
- 104.21%
Expense Ratio
WISIX has a high expense ratio of 1.23%, indicating above-average management fees.
Return for Risk
Risk / Return Rank
WISIX ranks 15 for risk / return — in the bottom 15% of mutual funds on our site. This means you're taking on significantly more risk than the returns justify. Consider whether the potential upside is worth the volatility, or explore alternatives with better risk / return profiles.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for William Blair International Small Cap Growth Fund (WISIX) and compare them to S&P 500 Index.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| WISIX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.06 | ||
| Sortino ratioReturn per unit of downside risk | -1.32 | ||
| Omega ratioGain probability vs. loss probability | 1.19 | 1.37 | -0.18 |
| Calmar ratioReturn relative to maximum drawdown | 1.41 | 2.78 | -1.38 |
| Martin ratioReturn relative to average drawdown | 3.81 | 12.44 | -8.62 |
Dividends
Dividend History
William Blair International Small Cap Growth Fund provided a 0.54% dividend yield over the last twelve months, with an annual payout of $0.09 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.09 | $0.09 | $0.22 | $0.11 | $0.02 | $2.72 | $0.37 | $0.04 | $1.45 | $1.56 | $0.05 | $0.32 |
Dividend yield | 0.54% | 0.61% | 1.78% | 0.88% | 0.21% | 16.20% | 2.09% | 0.31% | 13.84% | 9.94% | 0.36% | 2.31% |
Monthly Dividends
The table displays the monthly dividend distributions for William Blair International Small Cap Growth 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 | $0.09 | $0.09 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.22 | $0.22 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.11 | $0.11 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.02 | $0.02 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $2.72 | $2.72 |
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 William Blair International Small Cap Growth 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 William Blair International Small Cap Growth Fund was 64.84%, occurring on Mar 9, 2009. Recovery took 1043 trading sessions.
The current William Blair International Small Cap Growth Fund drawdown is 9.53%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Financial crisis2007–2009 | -64.84%Mar 2009 | 1y 4mo | 4y 1mo | 5y 6moNov 2007 - Apr 2013 |
Bear market2022 | -47.76%Sep 2022 | 1y 11d | — | 4y 9moSep 2021 - now |
COVID crash2020 | -38.88%Mar 2020 | 2y 1mo | 4mo 1d | 2y 5moJan 2018 - Jul 2020 |
2006 correction2006 | -19.97%Jun 2006 | 1mo 4d | 7mo 14d | 8mo 18dMay 2006 - Jan 2007 |
2007 correction2007 | -15.12%Aug 2007 | 1mo 4d | 1mo 20d | 2mo 24dJul 2007 - Oct 2007 |
Drawdown Indicators
| WISIX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -64.84% | -56.78% | -8.06% |
Max Drawdown (1Y)Largest decline over 1 year | -10.09% | -9.10% | -0.99% |
Max Drawdown (3Y)Largest decline over 3 years | -17.90% | -18.90% | +1.00% |
Max Drawdown (5Y)Largest decline over 5 years | -47.76% | -25.43% | -22.33% |
Max Drawdown (10Y)Largest decline over 10 years | -47.76% | -33.92% | -13.84% |
Current DrawdownCurrent decline from peak | -9.53% | -1.80% | -7.73% |
Average DrawdownAverage peak-to-trough decline | -16.55% | -10.71% | -5.84% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.70% | 2.03% | +1.67% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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