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V-Lab

Howmet Aerospace Inc EGARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

44.46%

decreased by 0.98%

1 Week

44.46%

decreased by 0.98%

1 Month

44.49%

decreased by 0.95%

Analysis last updated: Friday, September 18, 2026 at 11:32 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Howmet Aerospace Inc EGARCH

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 145% more than equivalent positive returns.

σ

EGARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 145% more than positive returns
ParamValuet-stat
ωconst0.0241
2.27**
αARCH0.0961
8.59***
βGARCH0.9884
292.33***
γleverage-0.0404
-2.80***

0.988

Persistence

59d

Half-life
σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0241
2.27**
α

ARCH

Response to squared shocks

0.0961
8.59***
β

GARCH

Volatility persistence

0.9884
292.33***
γ

leverage

Additional response to negative shocks

-0.0404
-2.80***

Persistence:

0.988

Half-life:

59 days