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Howmet Aerospace Inc GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

57.24%

decreased by 1.25%

1 Week

56.92%

decreased by 1.57%

1 Month

55.72%

decreased by 2.77%

Analysis last updated: Monday, September 14, 2026 at 09:49 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Howmet Aerospace Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 11, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 257% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 257% more than positive returns
ParamValuet-stat
ωconst0.0582
3.51***
αARCH0.0186
2.84***
βGARCH0.9474
167.29***
γleverage0.0479
2.91***

0.990

Persistence

69d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0582
3.51***
α

ARCH

Response to squared shocks

0.0186
2.84***
β

GARCH

Volatility persistence

0.9474
167.29***
γ

leverage

Additional response to negative shocks

0.0479
2.91***

Persistence:

0.990

Half-life:

69 days