V-Lab
Pngs Reva Diamond Jewellery Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
86.03%
increased by 30.16%
1 Week
64.42%
increased by 8.55%
1 Month
54.36%
decreased by 1.51%
Analysis last updated: Wednesday, August 5, 2026 at 07:09 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 4, 2026 to Jul 31, 2026Model Insight
Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day. Returns follow a Student-t distribution with v = 4.62 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 | 10.2242 | 5.74*** |
α ARCH Response to squared shocks | 0.2331 | 2.02** |
β GARCH Volatility persistence | 0.3927 | 3.83*** |
ν DF Student-t tail thickness | 4.6181 | 1.09 |
Persistence:
0.393
Half-life:
1 days
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