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Sivers Semiconductors Ab GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

141.31%

decreased by 2.78%

1 Week

138.58%

decreased by 5.51%

1 Month

129.02%

decreased by 15.07%

Analysis last updated: Friday, September 11, 2026 at 09:19 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Sivers Semiconductors Ab GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 17, 2014 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 25 trading days, meaning a shock loses half its impact after approximately 25 days. Returns follow a Student-t distribution with v = 3.36 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 25-day half-lifev = 3.36 · fat tails
ParamValuet-stat
ωconst22.0030
0.95
αARCH0.1014
6.37***
βGARCH0.9728
32.95***
νDF3.3617
3.52***

0.973

Persistence

25d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

22.0030
0.95
α

ARCH

Response to squared shocks

0.1014
6.37***
β

GARCH

Volatility persistence

0.9728
32.95***
ν

DF

Student-t tail thickness

3.3617
3.52***

Persistence:

0.973

Half-life:

25 days