Pngs Reva Diamond Jewellery Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Thursday, October 22nd, 2026
1 Day
60.63%
decreased by 1.41%
1 Week
66.30%
increased by 4.26%
1 Month
67.98%
increased by 5.94%
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
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 1 trading day.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3578 | 4.26*** |
| αARCH | 0.2173 | 1.63 |
| βGARCH | 0.0988 | 0.31 |
Spline Coefficients
K=2
| γ1 | 19.6722 | 1.71* |
| γ2 | -25.4754 | -1.66* |
0.316
Persistence1d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3578 | 4.26*** |
α ARCH Response to squared shocks | 0.2173 | 1.63 |
β GARCH Volatility persistence | 0.0988 | 0.31 |
Spline Coefficients
K=2
| γ1 | 19.6722 | 1.71* |
| γ2 | -25.4754 | -1.66* |
Persistence:
0.316
Half-life:
1 days
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