FZFLX vs. WSMDX
Compare and contrast key facts about Fidelity SAI Small-Mid Cap 500 Index Fund (FZFLX) and William Blair Small-Mid Cap Growth Fund (WSMDX).
FZFLX is managed by Fidelity. It was launched on Aug 12, 2015. WSMDX is managed by William Blair. It was launched on Dec 29, 2003.
Performance
FZFLX vs. WSMDX - Performance Comparison
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FZFLX vs. WSMDX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FZFLX Fidelity SAI Small-Mid Cap 500 Index Fund | 7.81% | 10.76% | 15.52% | 17.75% | -15.62% | 20.40% | 19.78% | 31.96% | -9.25% | 18.41% |
WSMDX William Blair Small-Mid Cap Growth Fund | -2.08% | 0.63% | 27.55% | 18.14% | -22.98% | 8.28% | 32.38% | 30.81% | -2.18% | 28.85% |
Returns By Period
In the year-to-date period, FZFLX achieves a 7.81% return, which is significantly higher than WSMDX's -2.08% return. Over the past 10 years, FZFLX has outperformed WSMDX with an annualized return of 12.08%, while WSMDX has yielded a comparatively lower 11.40% annualized return.
FZFLX
- 1D
- 5.00%
- 1M
- -6.21%
- YTD
- 7.81%
- 6M
- 9.60%
- 1Y
- 26.35%
- 3Y*
- 16.05%
- 5Y*
- 8.15%
- 10Y*
- 12.08%
WSMDX
- 1D
- 3.91%
- 1M
- -5.85%
- YTD
- -2.08%
- 6M
- -0.51%
- 1Y
- 11.10%
- 3Y*
- 12.10%
- 5Y*
- 3.13%
- 10Y*
- 11.40%
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FZFLX vs. WSMDX - Expense Ratio Comparison
FZFLX has a 0.05% expense ratio, which is lower than WSMDX's 1.10% expense ratio.
Return for Risk
FZFLX vs. WSMDX — Risk / Return Rank
FZFLX
WSMDX
FZFLX vs. WSMDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Small-Mid Cap 500 Index Fund (FZFLX) and William Blair Small-Mid Cap Growth Fund (WSMDX). 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.
| FZFLX | WSMDX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.13 | 0.51 | +0.61 |
Sortino ratioReturn per unit of downside risk | 1.66 | 0.88 | +0.78 |
Omega ratioGain probability vs. loss probability | 1.23 | 1.11 | +0.12 |
Calmar ratioReturn relative to maximum drawdown | 1.73 | 0.66 | +1.07 |
Martin ratioReturn relative to average drawdown | 7.43 | 2.34 | +5.09 |
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
| FZFLX | WSMDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.13 | 0.51 | +0.61 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.40 | 0.14 | +0.26 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.58 | 0.52 | +0.06 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.54 | 0.51 | +0.02 |
Correlation
The correlation between FZFLX and WSMDX is 0.92, 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
FZFLX vs. WSMDX - Dividend Comparison
FZFLX's dividend yield for the trailing twelve months is around 53.58%, more than WSMDX's 2.87% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FZFLX Fidelity SAI Small-Mid Cap 500 Index Fund | 53.58% | 57.77% | 10.20% | 2.35% | 79.79% | 50.77% | 7.19% | 6.49% | 7.69% | 1.68% | 0.93% | 0.67% |
WSMDX William Blair Small-Mid Cap Growth Fund | 2.87% | 2.81% | 24.90% | 7.89% | 3.34% | 9.30% | 1.66% | 7.13% | 8.88% | 5.33% | 2.64% | 5.31% |
Drawdowns
FZFLX vs. WSMDX - Drawdown Comparison
The maximum FZFLX drawdown since its inception was -42.03%, smaller than the maximum WSMDX drawdown of -50.33%. Use the drawdown chart below to compare losses from any high point for FZFLX and WSMDX.
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Drawdown Indicators
| FZFLX | WSMDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -42.03% | -50.33% | +8.30% |
Max Drawdown (1Y)Largest decline over 1 year | -14.54% | -13.20% | -1.34% |
Max Drawdown (5Y)Largest decline over 5 years | -24.77% | -36.89% | +12.12% |
Max Drawdown (10Y)Largest decline over 10 years | -42.03% | -36.89% | -5.14% |
Current DrawdownCurrent decline from peak | -6.21% | -8.05% | +1.84% |
Average DrawdownAverage peak-to-trough decline | -5.81% | -8.51% | +2.70% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.38% | 3.69% | -0.31% |
Volatility
FZFLX vs. WSMDX - Volatility Comparison
Fidelity SAI Small-Mid Cap 500 Index Fund (FZFLX) has a higher volatility of 11.32% compared to William Blair Small-Mid Cap Growth Fund (WSMDX) at 8.07%. This indicates that FZFLX's price experiences larger fluctuations and is considered to be riskier than WSMDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FZFLX | WSMDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 11.32% | 8.07% | +3.25% |
Volatility (6M)Calculated over the trailing 6-month period | 16.31% | 14.09% | +2.22% |
Volatility (1Y)Calculated over the trailing 1-year period | 24.32% | 22.27% | +2.05% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.78% | 23.00% | -2.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.91% | 21.84% | -0.93% |