Pngs Reva Diamond Jewellery Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Thursday, October 22nd, 2026
1 Day
53.69%
decreased by 2.61%
1 Week
58.36%
increased by 2.06%
1 Month
60.10%
increased by 3.80%
Analysis last updated: Thursday, October 22, 2026 at 07:06 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 4, 2026 to Oct 19, 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 = 3.45 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
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Shock decay: Shocks decay with a 1-day half-lifev = 3.45 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 14.7079 | 0.97 |
| αscore | 0.1519 | 0.39 |
| βpersistence | 0.4214 | 0.91 |
| νDF | 3.4466 | 0.23 |
0.421
Persistence1d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω long-run Long-run variance given a price move | 14.7079 | 0.97 |
α score Weight on the scaled score | 0.1519 | 0.39 |
β persistence Volatility persistence | 0.4214 | 0.91 |
ν DF Student-t tail thickness | 3.4466 | 0.23 |
Persistence:
0.421
Half-life:
1 days
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