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V-Lab

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

Volatility prediction for Friday, July 17th, 2026

1 Day

15.60%

increased by 1.05%

1 Week

15.74%

increased by 1.19%

1 Month

16.24%

increased by 1.69%

Analysis last updated: Monday, July 20, 2026 at 02:14 AM 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 May 15, 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 = 6.95 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4845
8.82***
α

ARCH

Response to squared shocks

0.0869
35.07***
β

GARCH

Volatility persistence

0.9826
475.39***
ν

DF

Student-t tail thickness

6.9519
6.79***

Persistence:

0.983

Half-life:

40 days