V-Lab
S&P 100 Index MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 28th, 2026
1 Day
15.70%
decreased by 0.82%
1 Week
15.82%
decreased by 0.70%
1 Month
16.08%
decreased by 0.44%
Analysis last updated: Monday, July 27, 2026 at 11:01 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Jul 24, 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
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 61 | |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8391 | 224.53*** |
γ leverage Additional response to negative shocks | 0.1926 | 41.34*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0111 | 5.11*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0697 | 4.30*** |
λ₃ tau persistence Long-term factor persistence | 0.9198 | 50.66*** |
Persistence:
0.935
Half-life:
10 days
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