- ISIN
- US0930012952
- CUSIP
- 093001295
- Issuer
- William Blair
- Inception Date
- Dec 29, 2003
- Category
- Mid Cap Growth 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
WSMDX Performance Chart
William Blair Small-Mid Cap Growth Fund (WSMDX) is up 13.1% since the beginning of the year. WSMDX is currently trading at $31 per share. Investors who bought $1,000 worth of WSMDX shares 5 years ago would now be looking at an investment worth $1,352.
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Returns By Period
William Blair Small-Mid Cap Growth Fund (WSMDX) has returned 13.09% so far this year and 25.09% over the past 12 months. Over the last ten years, WSMDX has returned 12.85% per year, falling short of the S&P 500 Index benchmark, which averaged 13.75% annually.
William Blair Small-Mid Cap Growth Fund
- 1D
- 1.17%
- 1M
- 5.58%
- YTD
- 13.09%
- 6M
- 12.71%
- 1Y
- 25.09%
- 3Y*
- 16.09%
- 5Y*
- 6.22%
- 10Y*
- 12.85%
Benchmark (S&P 500 Index)
- 1D
- -0.57%
- 1M
- 1.39%
- YTD
- 9.73%
- 6M
- 10.46%
- 1Y
- 24.50%
- 3Y*
- 19.43%
- 5Y*
- 12.21%
- 10Y*
- 13.75%
WSMDX Monthly Returns History
Based on dividend-adjusted daily data since Dec 30, 2003, WSMDX's average daily return is +0.05%, while the average monthly return is +1.04%. At this rate, an investment would double in approximately 5.6 years.
Historically, 63% of months were positive and 37% were negative. The best month was Apr 2009 with a return of +15.6%, while the worst month was Oct 2008 at -20.0%. The longest winning streak lasted 13 consecutive months, and the longest losing streak was 4 months.
On a daily basis, WSMDX closed higher 53% of trading days. The best single day was Dec 19, 2024 with a return of +14.5%, while the worst single day was Mar 16, 2020 at -13.0%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2.59% | 0.21% | -4.75% | 9.68% | 3.94% | 1.31% | 13.09% | ||||||
| 2025 | 3.32% | -6.84% | -8.04% | -2.82% | 3.53% | 5.13% | 0.65% | 3.52% | 1.32% | 0.54% | 2.55% | -1.24% | 0.63% |
| 2024 | -1.87% | 9.47% | 1.38% | -7.98% | 3.28% | -2.08% | 6.14% | 0.79% | 1.70% | -1.57% | 8.96% | 7.88% | 27.55% |
| 2023 | 10.61% | -2.69% | -2.08% | -0.55% | -1.25% | 8.02% | 2.31% | -3.21% | -5.23% | -6.80% | 9.47% | 10.34% | 18.14% |
| 2022 | -12.53% | 2.04% | 1.42% | -11.45% | -3.05% | -8.01% | 11.12% | -3.37% | -7.84% | 7.49% | 6.44% | -4.83% | -22.98% |
| 2021 | 1.05% | 4.59% | -1.56% | 4.49% | -3.88% | 3.51% | 0.24% | 1.94% | -3.30% | 6.26% | -5.76% | 1.16% | 8.28% |
Benchmark Metrics
William Blair Small-Mid Cap Growth Fund has an annualized alpha of 2.84%, beta of 1.02, and R2 of 0.79 versus S&P 500 Index. Calculated based on daily prices since December 30, 2003.
- This fund captured 109.19% of S&P 500 Index gains but only 96.81% of its losses - a favorable profile for investors.
- This fund generated an annualized alpha of 2.84% versus S&P 500 Index - delivering returns beyond what market exposure alone would predict.
- With beta of 1.02 and R2 of 0.79, this fund moves broadly in line with S&P 500 Index - much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 2.84%
- Beta
- 1.02
- R²
- 0.79
- Upside Capture
- 109.19%
- Downside Capture
- 96.81%
Expense Ratio
WSMDX has a high expense ratio of 1.10%, indicating above-average management fees.
Return for Risk
Risk / Return Rank
WSMDX ranks 31 for risk / return — below 31% of mutual funds on our site. The returns aren't fully compensating for the risk involved. This isn't necessarily a dealbreaker, but factor it into your decision — especially if you're risk-averse.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for William Blair Small-Mid Cap Growth Fund (WSMDX) 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.
| WSMDX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.58 | ||
| Sortino ratioReturn per unit of downside risk | -0.69 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.36 | -0.12 |
| Calmar ratioReturn relative to maximum drawdown | 2.31 | 2.71 | -0.40 |
| Martin ratioReturn relative to average drawdown | 8.41 | 12.15 | -3.74 |
Dividends
Dividend History
William Blair Small-Mid Cap Growth Fund provided a 2.48% dividend yield over the last twelve months, with an annual payout of $0.77 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.77 | $0.77 | $6.98 | $2.23 | $0.87 | $3.23 | $0.58 | $1.92 | $1.96 | $1.30 | $0.53 | $1.02 |
Dividend yield | 2.48% | 2.81% | 24.90% | 7.89% | 3.34% | 9.30% | 1.66% | 7.13% | 8.88% | 5.33% | 2.64% | 5.31% |
Monthly Dividends
The table displays the monthly dividend distributions for William Blair Small-Mid 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 | $0.77 | $0.77 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $6.98 | $6.98 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $2.23 | $2.23 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.87 | $0.87 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $3.23 | $3.23 |
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 Small-Mid 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 Small-Mid Cap Growth Fund was 50.33%, occurring on Nov 20, 2008. Recovery took 492 trading sessions.
The current William Blair Small-Mid Cap Growth Fund drawdown is 0.23%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Financial crisis2007–2009 | -50.33%Nov 2008 | 10mo 29d | 1y 11mo | 2y 10moDec 2007 - Nov 2010 |
Bear market2022 | -36.89%Jun 2022 | 7mo 8d | 2y 5mo | 3y 25dNov 2021 - Dec 2024 |
COVID crash2020 | -36.77%Mar 2020 | 1mo 2d | 4mo 14d | 5mo 16dFeb 2020 - Aug 2020 |
2011 bear market2011 | -25.90%Oct 2011 | 2mo 27d | 1y 3mo | 1y 6moJul 2011 - Jan 2013 |
2025 selloff2025 | -25.63%Apr 2025 | 2mo 14d | 9mo 12d | 11mo 26dJan 2025 - Jan 2026 |
Drawdown Indicators
| WSMDX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -50.33% | -56.78% | +6.45% |
Max Drawdown (1Y)Largest decline over 1 year | -11.50% | -9.10% | -2.40% |
Max Drawdown (3Y)Largest decline over 3 years | -25.63% | -18.90% | -6.73% |
Max Drawdown (5Y)Largest decline over 5 years | -36.89% | -25.43% | -11.46% |
Max Drawdown (10Y)Largest decline over 10 years | -36.89% | -33.92% | -2.97% |
Current DrawdownCurrent decline from peak | -0.23% | -1.29% | +1.06% |
Average DrawdownAverage peak-to-trough decline | -8.45% | -10.72% | +2.27% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.15% | 2.02% | +1.13% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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