V-Lab
CH Biotech R&D Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
85.74%
increased by 0.87%
1 Week
100.07%
increased by 15.20%
1 Month
139.82%
increased by 54.95%
Analysis last updated: Wednesday, August 26, 2026 at 09:50 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 2, 2015 to Aug 21, 2026Model 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 | 348.4275 | 2.38** |
α ARCH Response to squared shocks | 0.1664 | 95.89*** |
β GARCH Volatility persistence | 0.9832 | 141.28*** |
ν DF Student-t tail thickness | 2.0269 | 1,343.24*** |
Persistence:
0.983
Half-life:
41 days
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