- ISIN
- US9692515375
- CUSIP
- 969251537
- Issuer
- William Blair
- Inception Date
- Oct 1, 2019
- Category
- Small Cap Blend Equities
- Min. Investment
- $500,000
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Small-Cap
- Asset Class Style
- Blend
Share Price Chart
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Performance
WBCIX Performance Chart
William Blair Small-Mid Cap Core Fund (WBCIX) is up 12.7% since the beginning of the year. WBCIX is currently trading at $19 per share. Investors who bought $1,000 worth of WBCIX shares 5 years ago would now be looking at an investment worth $1,284.
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Returns By Period
William Blair Small-Mid Cap Core Fund (WBCIX) has returned 12.70% so far this year and 18.72% over the past 12 months.
William Blair Small-Mid Cap Core Fund
- 1D
- 0.32%
- 1M
- -1.06%
- 6M
- 8.52%
- YTD
- 12.70%
- 1Y
- 18.72%
- 3Y*
- 8.91%
- 5Y*
- 5.12%
- 10Y*
- —
- ALL TIME*
- 10.86%
Benchmark (S&P 500 Index)
- 1D
- 1.48%
- 1M
- 1.57%
- 6M
- 8.95%
- YTD
- 11.03%
- 1Y
- 21.84%
- 3Y*
- 19.28%
- 5Y*
- 11.54%
- 10Y*
- 13.29%
- ALL TIME*
- 8.11%
WBCIX Monthly Returns History
Based on dividend-adjusted daily data since Oct 2, 2019, WBCIX'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, 62% of months were positive and 38% were negative. The best month was Nov 2020 with a return of +15.5%, while the worst month was Mar 2020 at -19.8%. The longest winning streak lasted 11 consecutive months, and the longest losing streak was 3 months.
On a daily basis, WBCIX closed higher 52% of trading days. The best single day was Mar 24, 2020 with a return of +9.6%, while the worst single day was Mar 16, 2020 at -13.8%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3.13% | 1.23% | -5.71% | 8.68% | 3.60% | 4.29% | -2.50% | 12.70% | |||||
| 2025 | 3.79% | -4.39% | -7.10% | -2.70% | 3.69% | 4.20% | 0.98% | 2.48% | 0.53% | -0.88% | 1.84% | -0.47% | 1.29% |
| 2024 | -3.73% | 6.45% | 2.68% | -6.09% | 3.64% | -2.30% | 7.84% | 1.45% | 1.85% | -1.70% | 8.83% | -6.08% | 12.04% |
| 2023 | 10.13% | -2.42% | -3.99% | 0.14% | -3.01% | 7.82% | 4.24% | -3.55% | -5.31% | -6.61% | 9.16% | 7.99% | 13.26% |
| 2022 | -8.15% | 3.27% | 1.16% | -9.71% | -0.28% | -9.44% | 10.19% | -3.06% | -9.10% | 8.39% | 6.78% | -5.72% | -17.11% |
| 2021 | 0.31% | 9.37% | 2.76% | 4.20% | 0.07% | 0.66% | 0.13% | 1.05% | -2.33% | 7.04% | -2.23% | 3.49% | 26.63% |
Benchmark Metrics
William Blair Small-Mid Cap Core Fund has an annualized alpha of -3.30%, beta of 1.05, and R2 of 0.79 versus S&P 500 Index. Calculated based on daily prices since October 02, 2019.
- This fund participated in 109.44% of S&P 500 Index downside but only 94.95% of its upside - more exposed to losses than it benefited from rallies.
- This fund had an annualized alpha of -3.30% versus S&P 500 Index - delivering less than market exposure alone would predict.
- With beta of 1.05 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
- -3.30%
- Beta
- 1.05
- R²
- 0.79
- Upside Capture
- 94.95%
- Downside Capture
- 109.44%
Expense Ratio
WBCIX has a high expense ratio of 1.25%, indicating above-average management fees.
Return for Risk
Risk / Return Rank
WBCIX ranks 29 for risk / return — above 29% of mutual funds peers on PortfoliosLab. Its historical combined result is below the peer median.
Risk / Return Metrics
The table below present risk-adjusted performance metrics for William Blair Small-Mid Cap Core Fund (WBCIX) 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.
| WBCIX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.74 | ||
| Sortino ratioReturn per unit of downside risk | -0.88 | ||
| Omega ratioGain probability vs. loss probability | 1.18 | 1.31 | -0.13 |
| Calmar ratioReturn relative to maximum drawdown | 1.52 | 2.41 | -0.89 |
| Martin ratioReturn relative to average drawdown | 5.24 | 10.22 | -4.98 |
Dividends
Dividend History
William Blair Small-Mid Cap Core Fund provided a 2.65% dividend yield over the last twelve months, with an annual payout of $0.50 per share. The fund has been increasing its distributions for 2 consecutive years.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
| Dividend | $0.50 | $0.50 | $0.23 | $0.02 | $0.00 | $0.00 | $0.00 | $0.01 |
Dividend yield | 2.65% | 2.98% | 1.35% | 0.15% | 0.00% | 0.00% | 0.00% | 0.06% |
Monthly Dividends
The table displays the monthly dividend distributions for William Blair Small-Mid Cap Core 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 | $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 | $0.50 | $0.50 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.23 | $0.23 |
| 2023 | $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 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
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 Core 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 Core Fund was 39.56%, occurring on Mar 23, 2020. Recovery took 161 trading sessions.
The current William Blair Small-Mid Cap Core Fund drawdown is 2.50%.
Drawdown | Fall | Recovery | Underwater | Related event |
|---|---|---|---|---|
-39.56%Mar 2020 | 1mo 1d | 7mo 21d | 8mo 22dFeb 2020 - Nov 2020 | COVID crash2020 |
-27.65%Oct 2022 | 11mo 1d | 1y 11mo | 2y 10moNov 2021 - Sep 2024 | Bear market2022 |
-23.53%Apr 2025 | 4mo 13d | 9mo 12d | 1y 1moNov 2024 - Jan 2026 | 2025 selloff2025 |
-11.06%Mar 2026 | 2mo 3d | 28d | 3mo 1dJan 2026 - Apr 2026 | — |
-6.47%Mar 2021 | 8d | 23d | 1mo 1dMar 2021 - Apr 2021 | — |
Drawdown Indicators
| WBCIX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -39.56% | -56.78% | +17.22% |
Max Drawdown (1Y)Largest decline over 1 year | -11.06% | -9.10% | -1.96% |
Max Drawdown (3Y)Largest decline over 3 years | -23.53% | -18.90% | -4.63% |
Max Drawdown (5Y)Largest decline over 5 years | -27.65% | -25.43% | -2.22% |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.92% | — |
Current DrawdownCurrent decline from peak | -2.50% | -0.12% | -2.38% |
Average DrawdownAverage peak-to-trough decline | -8.95% | -10.70% | +1.75% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.21% | 2.14% | +1.07% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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