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V-Lab

OMX Stockholm 30 Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, August 6th, 2026

1 Day

13.95%

decreased by 0.66%

1 Week

14.16%

decreased by 0.45%

1 Month

14.92%

increased by 0.31%

Analysis last updated: Wednesday, August 5, 2026 at 04:06 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 Jul 31, 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 = 8.80 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

1.8633
8.57***
α

ARCH

Response to squared shocks

0.0763
34.84***
β

GARCH

Volatility persistence

0.9891
758.49***
ν

DF

Student-t tail thickness

8.8046
5.42***

Persistence:

0.989

Half-life:

63 days