Skip to main content
V-Lab
V-Lab

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

Volatility prediction for Thursday, October 22nd, 2026

1 Day

13.55%

increased by 1.12%

1 Week

13.78%

increased by 1.35%

1 Month

14.58%

increased by 2.15%

Analysis last updated: Thursday, October 22, 2026 at 05:41 PM UTC

Press Delete or Backspace to remove this series.
Date Range:

from

10/21/2024

to

10/21/2026

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 Oct 16, 2026

Model Insight

Volatility shocks decay with a half-life of 40 trading days, meaning a shock loses half its impact after approximately 40 days. Returns follow a Student-t distribution with v = 6.99 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 40-day half-lifev = 6.99 · fat tails
ParamValuet-stat
ωlong-run1.4686
2.23**
αscore0.0868
8.83***
βpersistence0.9827
121.04***
νDF6.9934
1.70*

0.983

Persistence

40d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

1.4686
2.23**
α

score

Weight on the scaled score

0.0868
8.83***
β

persistence

Volatility persistence

0.9827
121.04***
ν

DF

Student-t tail thickness

6.9934
1.70*

Persistence:

0.983

Half-life:

40 days