V-Lab
Hikma Pharmaceuticals PLC GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
38.00%
decreased by 1.06%
1 Week
38.20%
decreased by 0.86%
1 Month
38.67%
decreased by 0.39%
Analysis last updated: Wednesday, September 16, 2026 at 05:51 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 2, 2006 to Sep 14, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
GJR-GARCH Model
Tap to view equation
Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.5293 | 1.96* |
| αARCH | 0.0400 | 2.08** |
| βGARCH | 0.8570 | 18.48*** |
| γleverage | 0.0330 | 0.86 |
0.913
Persistence8d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5293 | 1.96* |
α ARCH Response to squared shocks | 0.0400 | 2.08** |
β GARCH Volatility persistence | 0.8570 | 18.48*** |
γ leverage Additional response to negative shocks | 0.0330 | 0.86 |
Persistence:
0.913
Half-life:
8 days
Other Hikma Pharmaceuticals PLC Analyses
Other GJR-GARCH Analyses on International Equities