WBCIX vs. WBSIX
Compare and contrast key facts about William Blair Small-Mid Cap Core Fund (WBCIX) and William Blair Small Cap Growth Fund (WBSIX).
WBCIX is managed by William Blair. It was launched on Oct 1, 2019. WBSIX is managed by William Blair. It was launched on Dec 27, 1999.
Performance
WBCIX vs. WBSIX - Performance Comparison
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WBCIX vs. WBSIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
WBCIX William Blair Small-Mid Cap Core Fund | -4.33% | 1.29% | 12.04% | 13.26% | -17.11% | 26.63% | 20.60% | 10.29% |
WBSIX William Blair Small Cap Growth Fund | -5.23% | 3.03% | 32.88% | 16.38% | -21.46% | 12.64% | 38.87% | 9.59% |
Returns By Period
In the year-to-date period, WBCIX achieves a -4.33% return, which is significantly higher than WBSIX's -5.23% return.
WBCIX
- 1D
- -0.50%
- 1M
- -8.36%
- YTD
- -4.33%
- 6M
- -3.89%
- 1Y
- 5.12%
- 3Y*
- 6.02%
- 5Y*
- 2.74%
- 10Y*
- —
WBSIX
- 1D
- -1.26%
- 1M
- -10.26%
- YTD
- -5.23%
- 6M
- -2.35%
- 1Y
- 9.76%
- 3Y*
- 12.31%
- 5Y*
- 4.37%
- 10Y*
- 13.07%
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WBCIX vs. WBSIX - Expense Ratio Comparison
Both WBCIX and WBSIX have an expense ratio of 1.25%.
Return for Risk
WBCIX vs. WBSIX — Risk / Return Rank
WBCIX
WBSIX
WBCIX vs. WBSIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for William Blair Small-Mid Cap Core Fund (WBCIX) and William Blair Small Cap Growth Fund (WBSIX). 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.
| WBCIX | WBSIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.25 | 0.40 | -0.16 |
Sortino ratioReturn per unit of downside risk | 0.50 | 0.74 | -0.23 |
Omega ratioGain probability vs. loss probability | 1.07 | 1.09 | -0.03 |
Calmar ratioReturn relative to maximum drawdown | 0.20 | 0.45 | -0.25 |
Martin ratioReturn relative to average drawdown | 0.72 | 1.56 | -0.84 |
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
| WBCIX | WBSIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.25 | 0.40 | -0.16 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.13 | 0.18 | -0.05 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.57 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.36 | 0.51 | -0.15 |
Correlation
The correlation between WBCIX and WBSIX is 0.95, 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
WBCIX vs. WBSIX - Dividend Comparison
WBCIX's dividend yield for the trailing twelve months is around 3.12%, less than WBSIX's 7.90% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WBCIX William Blair Small-Mid Cap Core Fund | 3.12% | 2.98% | 1.35% | 0.15% | 0.00% | 0.00% | 0.00% | 0.06% | 0.00% | 0.00% | 0.00% | 0.00% |
WBSIX William Blair Small Cap Growth Fund | 7.90% | 7.49% | 20.14% | 1.53% | 3.55% | 17.85% | 9.73% | 2.07% | 12.60% | 16.89% | 5.42% | 8.25% |
Drawdowns
WBCIX vs. WBSIX - Drawdown Comparison
The maximum WBCIX drawdown since its inception was -39.56%, smaller than the maximum WBSIX drawdown of -62.35%. Use the drawdown chart below to compare losses from any high point for WBCIX and WBSIX.
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Drawdown Indicators
| WBCIX | WBSIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -39.56% | -62.35% | +22.79% |
Max Drawdown (1Y)Largest decline over 1 year | -13.32% | -13.31% | -0.01% |
Max Drawdown (5Y)Largest decline over 5 years | -27.65% | -38.13% | +10.48% |
Max Drawdown (10Y)Largest decline over 10 years | — | -39.16% | — |
Current DrawdownCurrent decline from peak | -10.72% | -12.75% | +2.03% |
Average DrawdownAverage peak-to-trough decline | -9.33% | -11.20% | +1.87% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.71% | 4.02% | -0.31% |
Volatility
WBCIX vs. WBSIX - Volatility Comparison
The current volatility for William Blair Small-Mid Cap Core Fund (WBCIX) is 6.19%, while William Blair Small Cap Growth Fund (WBSIX) has a volatility of 6.91%. This indicates that WBCIX experiences smaller price fluctuations and is considered to be less risky than WBSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WBCIX | WBSIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.19% | 6.91% | -0.72% |
Volatility (6M)Calculated over the trailing 6-month period | 12.17% | 14.89% | -2.72% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.09% | 23.53% | -2.44% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.63% | 23.78% | -3.15% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.93% | 22.91% | +1.02% |