V-Lab
I-Hwa Industrial Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
172.69%
increased by 38.39%
1 Week
178.76%
increased by 44.46%
1 Month
200.25%
increased by 65.95%
Analysis last updated: Sunday, August 23, 2026 at 02:08 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 18, 1995 to Aug 21, 2026Extended Optimization
Model Insight
The estimated Student-t degrees of freedom v = 2.03 sit at the infinite-variance boundary (v → 2): the model is attributing extreme moves to heavy tails rather than to volatility, so the volatility scale is unreliable here. See the boundary-parameters flag.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 737.0443 | 3.81*** |
α ARCH Response to squared shocks | 0.1492 | 188.66*** |
β GARCH Volatility persistence | 0.9931 | 556.06*** |
ν DF Student-t tail thickness | 2.0313 | 3,734.05*** |
Persistence:
0.993
Half-life:
100 days
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