V-Lab
General Electric Co Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 22nd, 2026
1 Day
28.81%
decreased by 0.26%
1 Week
28.98%
decreased by 0.09%
1 Month
29.53%
increased by 0.46%
Analysis last updated: Monday, September 21, 2026 at 09:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 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 19 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 | 0.8211 | 7.09*** |
| αARCH | 0.0711 | 6.86*** |
| βGARCH | 0.8936 | 57.50*** |
Spline Coefficients
K=8
| γ1 | 0.0322 | 1.47 |
| γ2 | 0.0013 | 0.04 |
| γ3 | -0.1357 | -4.31*** |
| γ4 | 0.2205 | 7.73*** |
| γ5 | -0.2293 | -8.52*** |
| γ6 | 0.2301 | 7.11*** |
| γ7 | -0.2059 | -6.10*** |
| γ8 | 0.1101 | 4.38*** |
0.965
Persistence19d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8211 | 7.09*** |
α ARCH Response to squared shocks | 0.0711 | 6.86*** |
β GARCH Volatility persistence | 0.8936 | 57.50*** |
Spline Coefficients
K=8
| γ1 | 0.0322 | 1.47 |
| γ2 | 0.0013 | 0.04 |
| γ3 | -0.1357 | -4.31*** |
| γ4 | 0.2205 | 7.73*** |
| γ5 | -0.2293 | -8.52*** |
| γ6 | 0.2301 | 7.11*** |
| γ7 | -0.2059 | -6.10*** |
| γ8 | 0.1101 | 4.38*** |
Persistence:
0.965
Half-life:
19 days
Other General Electric Co Analyses
Other Zero Slope Spline-GARCH Analyses on Equities