V-Lab
HBL Engineering Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
48.79%
decreased by 0.84%
1 Week
50.70%
increased by 1.07%
1 Month
54.07%
increased by 4.44%
Analysis last updated: Tuesday, August 25, 2026 at 06:56 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 14, 2007 to Aug 21, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 82% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.6621 | 19.44*** |
α ARCH Response to squared shocks | 0.0824 | 12.93*** |
β GARCH Volatility persistence | 0.7535 | 76.57*** |
γ leverage Additional response to negative shocks | 0.0672 | 5.21*** |
Persistence:
0.870
Half-life:
5 days
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