V-Lab
I-Hwa Industrial Co Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
34.01%
increased by 4.36%
1 Week
34.54%
increased by 4.89%
1 Month
36.43%
increased by 6.78%
Analysis last updated: Sunday, August 23, 2026 at 02:06 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 18, 1995 to Aug 21, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 45% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1214 | 16.68*** |
α ARCH Response to squared shocks | 0.0981 | 19.60*** |
β GARCH Volatility persistence | 0.9064 | 318.16*** |
γ leverage Additional response to negative shocks | -0.0305 | -4.34*** |
Persistence:
0.989
Half-life:
64 days
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