V-Lab
Guangdong Shunna Electric Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
71.81%
increased by 14.93%
1 Week
71.76%
increased by 14.88%
1 Month
71.57%
increased by 14.69%
Analysis last updated: Saturday, July 25, 2026 at 11:16 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1994 to Jul 24, 2026Model Insight
With persistence 0.992, volatility shocks have a half-life of 81 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 4.92 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 | 18.8077 | 4.34*** |
α ARCH Response to squared shocks | 0.1146 | 57.00*** |
β GARCH Volatility persistence | 0.9915 | 512.95*** |
ν DF Student-t tail thickness | 4.9181 | 18.01*** |
Persistence:
0.992
Half-life:
81 days
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