V-Lab
Diana Tea Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
37.82%
increased by 0.53%
1 Week
40.91%
increased by 3.62%
1 Month
47.16%
increased by 9.87%
Analysis last updated: Sunday, July 26, 2026 at 01:15 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 4, 2008 to Jul 24, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days. Returns follow a Student-t distribution with v = 3.88 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 | 11.3731 | 9.64*** |
α ARCH Response to squared shocks | 0.1385 | 19.00*** |
β GARCH Volatility persistence | 0.9073 | 90.33*** |
ν DF Student-t tail thickness | 3.8769 | 9.97*** |
Persistence:
0.907
Half-life:
7 days
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