V-Lab
Tesla Inc GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 16th, 2026
1 Day
52.73%
decreased by 0.76%
1 Week
52.82%
decreased by 0.67%
1 Month
53.13%
decreased by 0.36%
Analysis last updated: Wednesday, September 16, 2026 at 02:42 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 29, 2010 to Sep 11, 2026Model Insight
Volatility shocks decay with a half-life of 64 trading days, meaning a shock loses half its impact after approximately 64 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 64-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1378 | 3.33*** |
| αARCH | 0.0302 | 2.60*** |
| βGARCH | 0.9585 | 105.32*** |
| γleverage | 0.0008 | 0.04 |
0.989
Persistence64d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1378 | 3.33*** |
α ARCH Response to squared shocks | 0.0302 | 2.60*** |
β GARCH Volatility persistence | 0.9585 | 105.32*** |
γ leverage Additional response to negative shocks | 0.0008 | 0.04 |
Persistence:
0.989
Half-life:
64 days
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