V-Lab
Simpson Manufacturing Co Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
34.70%
decreased by 1.41%
1 Week
34.80%
decreased by 1.31%
1 Month
35.15%
decreased by 0.96%
Analysis last updated: Friday, August 21, 2026 at 11:07 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 26, 1994 to Aug 21, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 235% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1533 | 13.27*** |
α ARCH Response to squared shocks | 0.0362 | 15.99*** |
β GARCH Volatility persistence | 0.8923 | 196.79*** |
γ leverage Additional response to negative shocks | 0.0851 | 12.63*** |
Persistence:
0.971
Half-life:
24 days
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