V-Lab
Fidelity Blue Chip Growth ETF MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
17.89%
decreased by 0.48%
1 Week
18.36%
decreased by 0.01%
1 Month
19.85%
increased by 1.48%
Analysis last updated: Friday, September 11, 2026 at 10:07 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 4, 2020 to Sep 11, 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 | 54.90*** |
| γleverage | 0.1516 | 7.54*** |
| λ₁tau intercept | 0.0244 | 0.44 |
| λ₂forecast adj. | 0.0082 | 0.75 |
| λ₃tau persistence | 0.9823 | 32.11*** |
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 | 54.90*** |
γ leverage Additional response to negative shocks | 0.1516 | 7.54*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0244 | 0.44 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0082 | 0.75 |
λ₃ tau persistence Long-term factor persistence | 0.9823 | 32.11*** |
Persistence:
0.973
Half-life:
25 days
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