Skip to main content
V-Lab
V-Lab

Kelly Services Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

32.63%

decreased by 1.87%

1 Week

32.91%

decreased by 1.59%

1 Month

33.85%

decreased by 0.65%

Analysis last updated: Friday, September 11, 2026 at 11:05 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Kelly Services 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 Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 34 trading days, meaning a shock loses half its impact after approximately 34 days. Returns follow a Student-t distribution with v = 4.30 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 34-day half-lifev = 4.30 · fat tails
ParamValuet-stat
ωconst6.0294
1.34
αARCH0.0676
5.92***
βGARCH0.9798
64.79***
νDF4.3029
2.28**

0.980

Persistence

34d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

6.0294
1.34
α

ARCH

Response to squared shocks

0.0676
5.92***
β

GARCH

Volatility persistence

0.9798
64.79***
ν

DF

Student-t tail thickness

4.3029
2.28**

Persistence:

0.980

Half-life:

34 days