V-Lab
Nanjing Vazyme Biotech Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
110.08%
decreased by 10.98%
1 Week
109.73%
decreased by 11.33%
1 Month
108.39%
decreased by 12.67%
Analysis last updated: Wednesday, August 26, 2026 at 07:47 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 15, 2021 to Aug 21, 2026Model Insight
With persistence 0.992, volatility shocks have a half-life of 90 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 4.13 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 28.0390 | 4.93*** |
α ARCH Response to squared shocks | 0.0983 | 35.50*** |
β GARCH Volatility persistence | 0.9923 | 771.02*** |
ν DF Student-t tail thickness | 4.1341 | 14.82*** |
Persistence:
0.992
Half-life:
90 days
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