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OMX Stockholm 30 Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, November 16th, 2026

1 Day

14.22%

decreased by 0.70%

1 Week

14.43%

decreased by 0.49%

1 Month

15.20%

increased by 0.28%

Analysis last updated: Friday, November 13, 2026 at 05:13 PM UTC

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Date Range:

from

11/13/2024

to

11/13/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of OMX Stockholm 30 Index 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 Nov 13, 2026

Model Insight

Volatility shocks decay with a half-life of 63 trading days, meaning a shock loses half its impact after approximately 63 days. Returns follow a Student-t distribution with ν = 9.81 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 63-day half-lifeν = 9.81 · fat tails
ParamValuet-stat
ωlong-run1.9151
2.20**
αscore0.0810
8.85***
βpersistence0.9890
187.67***
νDF9.8117
1.18

0.989

Persistence

63d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

1.9151
2.20**
α

score

Weight on the scaled score

0.0810
8.85***
β

persistence

Volatility persistence

0.9890
187.67***
ν

DF

Student-t tail thickness

9.8117
1.18

Persistence:

0.989

Half-life:

63 days