V-Lab
Howmet Aerospace Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
28.41%
decreased by 0.45%
1 Week
28.62%
decreased by 0.24%
1 Month
29.43%
increased by 0.57%
Analysis last updated: Friday, July 24, 2026 at 10:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 24, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 250% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0574 | 13.98*** |
α ARCH Response to squared shocks | 0.0187 | 11.37*** |
β GARCH Volatility persistence | 0.9479 | 674.19*** |
γ leverage Additional response to negative shocks | 0.0467 | 11.41*** |
Persistence:
0.990
Half-life:
68 days
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