V-Lab
Karachi Stock Exchange KSE100 Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
15.99%
increased by 3.85%
1 Week
16.31%
increased by 4.17%
1 Month
17.23%
increased by 5.09%
Analysis last updated: Friday, September 11, 2026 at 05:41 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Sep 4, 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 16 trading days.
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 | 0.6105 | 4.94*** |
| αARCH | 0.1455 | 10.39*** |
| βGARCH | 0.8110 | 42.53*** |
Spline Coefficients
K=3
| γ1 | -0.0163 | -3.75*** |
| γ2 | 0.0212 | 3.55*** |
| γ3 | -0.0054 | -2.02** |
0.957
Persistence16d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.6105 | 4.94*** |
α ARCH Response to squared shocks | 0.1455 | 10.39*** |
β GARCH Volatility persistence | 0.8110 | 42.53*** |
Spline Coefficients
K=3
| γ1 | -0.0163 | -3.75*** |
| γ2 | 0.0212 | 3.55*** |
| γ3 | -0.0054 | -2.02** |
Persistence:
0.957
Half-life:
16 days
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