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Howmet Aerospace Inc GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, September 23rd, 2026

1 Day

50.13%

decreased by 1.08%

1 Week

49.92%

decreased by 1.29%

1 Month

49.12%

decreased by 2.09%

Analysis last updated: Tuesday, September 22, 2026 at 09:45 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 18, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 255% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 255% more than positive returns
ParamValuet-stat
ωconst0.0579
3.51***
αARCH0.0186
2.84***
βGARCH0.9477
168.09***
γleverage0.0474
2.91***

0.990

Persistence

69d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0579
3.51***
α

ARCH

Response to squared shocks

0.0186
2.84***
β

GARCH

Volatility persistence

0.9477
168.09***
γ

leverage

Additional response to negative shocks

0.0474
2.91***

Persistence:

0.990

Half-life:

69 days