Russell 1000 Growth Index MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, October 13th, 2026
1 Day
15.29%
increased by 0.16%
1 Week
15.70%
increased by 0.57%
1 Month
16.75%
increased by 1.62%
Analysis last updated: Tuesday, October 13, 2026 at 09:10 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 12, 2000 to Oct 9, 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 | 0.8497 | 68.87*** |
| γleverage | 0.1906 | 11.49*** |
| λ₁tau intercept | 0.0117 | 1.70* |
| λ₂forecast adj. | 0.0695 | 2.46** |
| λ₃tau persistence | 0.9210 | 29.22*** |
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 | 0.8497 | 68.87*** |
γ leverage Additional response to negative shocks | 0.1906 | 11.49*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0117 | 1.70* |
λ₂ forecast adj. Forecast performance sensitivity | 0.0695 | 2.46** |
λ₃ tau persistence Long-term factor persistence | 0.9210 | 29.22*** |
Persistence:
0.945
Half-life:
12 days
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