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V-Lab

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

Volatility prediction for Friday, October 2nd, 2026

1 Day

12.12%

increased by 0.36%

1 Week

12.43%

increased by 0.67%

1 Month

13.48%

increased by 1.72%

Analysis last updated: Friday, October 2, 2026 at 05:47 PM UTC

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Date Range:

from

10/01/2024

to

10/01/2026

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 Sep 25, 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 = 6.98 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 = 6.98 · fat tails
ParamValuet-stat
ωconst1.4702
2.22**
αARCH0.0869
8.82***
βGARCH0.9827
120.17***
νDF6.9753
1.70*

0.983

Persistence

40d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4702
2.22**
α

ARCH

Response to squared shocks

0.0869
8.82***
β

GARCH

Volatility persistence

0.9827
120.17***
ν

DF

Student-t tail thickness

6.9753
1.70*

Persistence:

0.983

Half-life:

40 days