Fidelity Blue Chip Growth ETF MF2-GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
30.06%
increased by 6.57%
1 Week
29.83%
increased by 6.34%
1 Month
29.05%
increased by 5.56%
Analysis last updated: Thursday, October 22, 2026 at 09:14 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 4, 2020 to Oct 16, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
MF2-GARCH Model
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Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8967 | 55.21*** |
| γleverage | 0.1520 | 7.58*** |
| λ₁tau intercept | 0.0237 | 0.43 |
| λ₂forecast adj. | 0.0078 | 0.69 |
| λ₃tau persistence | 0.9831 | 31.86*** |
0.973
Persistence25d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8967 | 55.21*** |
γ leverage Additional response to negative shocks | 0.1520 | 7.58*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0237 | 0.43 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0078 | 0.69 |
λ₃ tau persistence Long-term factor persistence | 0.9831 | 31.86*** |
Persistence:
0.973
Half-life:
25 days
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