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KBR Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

27.76%

decreased by 1.38%

1 Week

28.21%

decreased by 0.93%

1 Month

29.79%

increased by 0.65%

Analysis last updated: Saturday, September 12, 2026 at 12:15 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of KBR Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 16, 2006 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 47 trading days, meaning a shock loses half its impact after approximately 47 days. Returns follow a Student-t distribution with v = 4.37 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 47-day half-lifev = 4.37 · fat tails
ParamValuet-stat
ωconst6.5327
0.97
αARCH0.0697
6.24***
βGARCH0.9854
65.12***
νDF4.3683
2.22**

0.985

Persistence

47d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

6.5327
0.97
α

ARCH

Response to squared shocks

0.0697
6.24***
β

GARCH

Volatility persistence

0.9854
65.12***
ν

DF

Student-t tail thickness

4.3683
2.22**

Persistence:

0.985

Half-life:

47 days