WSMDX vs. FXAIX
Compare and contrast key facts about William Blair Small-Mid Cap Growth Fund (WSMDX) and Fidelity 500 Index Fund (FXAIX).
WSMDX is managed by William Blair. It was launched on Dec 29, 2003. FXAIX is a passively managed fund by Fidelity that tracks the performance of the S&P 500 Index. It was launched on Feb 17, 1988.
Performance
WSMDX vs. FXAIX - Performance Comparison
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WSMDX vs. FXAIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
WSMDX William Blair Small-Mid Cap Growth Fund | -5.76% | 0.63% | 27.55% | 18.14% | -22.98% | 8.28% | 32.38% | 30.81% | -2.18% | 28.85% |
FXAIX Fidelity 500 Index Fund | -4.34% | 17.84% | 25.01% | 26.29% | -18.14% | 28.71% | 18.42% | 31.48% | -4.43% | 21.82% |
Returns By Period
In the year-to-date period, WSMDX achieves a -5.76% return, which is significantly lower than FXAIX's -4.34% return. Over the past 10 years, WSMDX has underperformed FXAIX with an annualized return of 10.98%, while FXAIX has yielded a comparatively higher 14.08% annualized return.
WSMDX
- 1D
- -1.22%
- 1M
- -8.33%
- YTD
- -5.76%
- 6M
- -4.04%
- 1Y
- 7.14%
- 3Y*
- 10.68%
- 5Y*
- 2.75%
- 10Y*
- 10.98%
FXAIX
- 1D
- 2.92%
- 1M
- -5.02%
- YTD
- -4.34%
- 6M
- -2.14%
- 1Y
- 17.32%
- 3Y*
- 18.30%
- 5Y*
- 11.79%
- 10Y*
- 14.08%
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WSMDX vs. FXAIX - Expense Ratio Comparison
WSMDX has a 1.10% expense ratio, which is higher than FXAIX's 0.02% expense ratio.
Return for Risk
WSMDX vs. FXAIX — Risk / Return Rank
WSMDX
FXAIX
WSMDX vs. FXAIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for William Blair Small-Mid Cap Growth Fund (WSMDX) and Fidelity 500 Index Fund (FXAIX). 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.
| WSMDX | FXAIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.30 | 0.97 | -0.67 |
Sortino ratioReturn per unit of downside risk | 0.59 | 1.49 | -0.90 |
Omega ratioGain probability vs. loss probability | 1.08 | 1.23 | -0.15 |
Calmar ratioReturn relative to maximum drawdown | 0.28 | 1.52 | -1.24 |
Martin ratioReturn relative to average drawdown | 1.03 | 7.30 | -6.27 |
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
| WSMDX | FXAIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.30 | 0.97 | -0.67 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.12 | 0.70 | -0.58 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.51 | 0.78 | -0.28 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.50 | 0.76 | -0.26 |
Correlation
The correlation between WSMDX and FXAIX is 0.86, 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
WSMDX vs. FXAIX - Dividend Comparison
WSMDX's dividend yield for the trailing twelve months is around 2.98%, more than FXAIX's 1.16% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WSMDX William Blair Small-Mid Cap Growth Fund | 2.98% | 2.81% | 24.90% | 7.89% | 3.34% | 9.30% | 1.66% | 7.13% | 8.88% | 5.33% | 2.64% | 5.31% |
FXAIX Fidelity 500 Index Fund | 1.16% | 1.11% | 1.25% | 1.45% | 1.69% | 1.22% | 1.60% | 2.06% | 2.72% | 1.97% | 2.52% | 2.83% |
Drawdowns
WSMDX vs. FXAIX - Drawdown Comparison
The maximum WSMDX drawdown since its inception was -50.33%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for WSMDX and FXAIX.
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Drawdown Indicators
| WSMDX | FXAIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -50.33% | -33.79% | -16.54% |
Max Drawdown (1Y)Largest decline over 1 year | -13.20% | -12.13% | -1.07% |
Max Drawdown (5Y)Largest decline over 5 years | -36.89% | -24.50% | -12.39% |
Max Drawdown (10Y)Largest decline over 10 years | -36.89% | -33.79% | -3.10% |
Current DrawdownCurrent decline from peak | -11.50% | -6.23% | -5.27% |
Average DrawdownAverage peak-to-trough decline | -8.51% | -3.83% | -4.68% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.70% | 2.53% | +1.17% |
Volatility
WSMDX vs. FXAIX - Volatility Comparison
William Blair Small-Mid Cap Growth Fund (WSMDX) has a higher volatility of 7.01% compared to Fidelity 500 Index Fund (FXAIX) at 5.34%. This indicates that WSMDX's price experiences larger fluctuations and is considered to be riskier than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WSMDX | FXAIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.01% | 5.34% | +1.67% |
Volatility (6M)Calculated over the trailing 6-month period | 13.56% | 9.53% | +4.03% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.97% | 18.32% | +3.65% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.94% | 16.92% | +6.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.81% | 18.05% | +3.76% |