V-Lab
Pngs Reva Diamond Jewellery Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
45.36%
decreased by 0.46%
1 Week
50.03%
increased by 4.21%
1 Month
51.37%
increased by 5.55%
Analysis last updated: Saturday, September 19, 2026 at 10:35 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 4, 2026 to Sep 18, 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 | 1.0511 | 4.12*** |
| αARCH | 0.2670 | 1.45 |
| βGARCH | 0.0345 | 0.16 |
Spline Coefficients
K=1
| γ1 | 0.4326 | 0.20 |
0.301
Persistence1d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0511 | 4.12*** |
α ARCH Response to squared shocks | 0.2670 | 1.45 |
β GARCH Volatility persistence | 0.0345 | 0.16 |
Spline Coefficients
K=1
| γ1 | 0.4326 | 0.20 |
Persistence:
0.301
Half-life:
1 days
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