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V-Lab

OMX Stockholm 30 Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

11.64%

increased by 0.54%

1 Week

11.95%

increased by 0.85%

1 Month

13.02%

increased by 1.92%

Analysis last updated: Tuesday, August 25, 2026 at 04:05 PM UTC

Date Range:

from

to

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 Aug 21, 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 v = 8.79 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

1.8630
8.51***
α

ARCH

Response to squared shocks

0.0765
34.88***
β

GARCH

Volatility persistence

0.9891
757.37***
ν

DF

Student-t tail thickness

8.7875
5.45***

Persistence:

0.989

Half-life:

63 days