Pngs Reva Diamond Jewellery Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, October 22nd, 2026
1 Day
56.42%
decreased by 9.78%
1 Week
56.41%
decreased by 9.79%
1 Month
56.39%
decreased by 9.81%
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 3 trading days, meaning a shock loses half its impact after approximately 3 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 3-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 2.9402 | 1.84* |
| αARCH | 0.4346 | 1.54 |
| βGARCH | 0.5176 | 3.57*** |
| γleverage | -0.3706 | -1.17 |
0.767
Persistence3d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.9402 | 1.84* |
α ARCH Response to squared shocks | 0.4346 | 1.54 |
β GARCH Volatility persistence | 0.5176 | 3.57*** |
γ leverage Additional response to negative shocks | -0.3706 | -1.17 |
Persistence:
0.767
Half-life:
3 days
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