V-Lab
IMV Inc. GJR-GARCH Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Monday, July 27th, 2026
1 Day
3,710.83%
decreased by 199.61%
1 Week
3,710.90%
decreased by 199.54%
1 Month
3,711.17%
decreased by 199.27%
Analysis last updated: Saturday, July 25, 2026 at 09:25 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 12, 2009 to Jul 24, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 693147 trading days (~2750.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0022 | 6.76*** |
α ARCH Response to squared shocks | 0.1083 | 4.38*** |
β GARCH Volatility persistence | 0.9005 | 112.99*** |
γ leverage Additional response to negative shocks | -0.0175 | -0.60 |
Persistence:
1.000
Half-life:
693147 days
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