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Oslo Stock Exchange All Share Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

10.75%

decreased by 0.01%

1 Week

11.14%

increased by 0.38%

1 Month

12.46%

increased by 1.70%

Analysis last updated: Friday, September 11, 2026 at 05:41 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Oslo Stock Exchange All Share Index GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Sep 9, 2026

Model Insight

Volatility shocks decay with a half-life of 39 trading days, meaning a shock loses half its impact after approximately 39 days. Returns follow a Student-t distribution with v = 6.97 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 39-day half-lifev = 6.97 · fat tails
ParamValuet-stat
ωconst1.4693
2.23**
αARCH0.0869
8.80***
βGARCH0.9826
119.53***
νDF6.9669
1.70*

0.983

Persistence

39d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4693
2.23**
α

ARCH

Response to squared shocks

0.0869
8.80***
β

GARCH

Volatility persistence

0.9826
119.53***
ν

DF

Student-t tail thickness

6.9669
1.70*

Persistence:

0.983

Half-life:

39 days