V-Lab
Russell 1000 Growth Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
16.27%
increased by 1.03%
1 Week
16.57%
increased by 1.33%
1 Month
17.48%
increased by 2.24%
Analysis last updated: Friday, September 11, 2026 at 09:04 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 12, 2000 to Sep 4, 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 | 61 | |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8489 | 68.29*** |
| γleverage | 0.1913 | 11.47*** |
| λ₁tau intercept | 0.0120 | 1.71* |
| λ₂forecast adj. | 0.0723 | 2.51** |
| λ₃tau persistence | 0.9180 | 28.73*** |
0.945
Persistence12d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 61 | |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8489 | 68.29*** |
γ leverage Additional response to negative shocks | 0.1913 | 11.47*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0120 | 1.71* |
λ₂ forecast adj. Forecast performance sensitivity | 0.0723 | 2.51** |
λ₃ tau persistence Long-term factor persistence | 0.9180 | 28.73*** |
Persistence:
0.945
Half-life:
12 days
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