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ABM Industries Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

24.13%

decreased by 0.67%

1 Week

24.44%

decreased by 0.36%

1 Month

25.47%

increased by 0.67%

Analysis last updated: Friday, July 24, 2026 at 10:18 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of ABM Industries Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 36 trading days, meaning a shock loses half its impact after approximately 36 days. Returns follow a Student-t distribution with v = 4.14 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.8525
4.84***
α

ARCH

Response to squared shocks

0.0844
31.63***
β

GARCH

Volatility persistence

0.9808
235.82***
ν

DF

Student-t tail thickness

4.1398
12.15***

Persistence:

0.981

Half-life:

36 days