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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of General Electric Co S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model 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
ParamValuet-stat
ωconst0.8211
7.09***
αARCH0.0711
6.86***
βGARCH0.8936
57.50***
γi Spline Coefficients
K=8
γ10.0322
1.47
γ20.0013
0.04
γ3-0.1357
-4.31***
γ40.2205
7.73***
γ5-0.2293
-8.52***
γ60.2301
7.11***
γ7-0.2059
-6.10***
γ80.1101
4.38***

0.965

Persistence

19d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-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***
γi Spline Coefficients
K=8
γ10.0322
1.47
γ20.0013
0.04
γ3-0.1357
-4.31***
γ40.2205
7.73***
γ5-0.2293
-8.52***
γ60.2301
7.11***
γ7-0.2059
-6.10***
γ80.1101
4.38***

Persistence:

0.965

Half-life:

19 days