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SK Hynix Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, October 7th, 2026

1 Day

73.58%

decreased by 0.23%

1 Week

73.55%

decreased by 0.26%

1 Month

73.43%

decreased by 0.38%

Analysis last updated: Wednesday, October 7, 2026 at 07:57 PM UTC

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Date Range:

from

10/06/2024

to

10/06/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of SK Hynix Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 26, 1996 to Oct 2, 2026

Model Insight

With persistence 0.998, volatility shocks have a half-life of 309 trading days (~1.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 7.44 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.998, shock half-life ~309 daysv = 7.44 · fat tails
ParamValuet-stat
ωconst17.3075
2.04**
αARCH0.0430
12.34***
βGARCH0.9978
1,001.76***
νDF7.4364
2.28**

0.998

Persistence

309d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

17.3075
2.04**
α

ARCH

Response to squared shocks

0.0430
12.34***
β

GARCH

Volatility persistence

0.9978
1,001.76***
ν

DF

Student-t tail thickness

7.4364
2.28**

Persistence:

0.998

Half-life:

309 days