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V-Lab

SK Hynix Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, August 14th, 2026

1 Day

129.00%

decreased by 1.26%

1 Week

128.83%

decreased by 1.43%

1 Month

128.13%

decreased by 2.13%

Analysis last updated: Friday, August 14, 2026 at 07:51 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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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 Aug 7, 2026

Model Insight

With persistence 0.998, volatility shocks have a half-life of 363 trading days (~1.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 7.52 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

18.6728
8.63***
α

ARCH

Response to squared shocks

0.0421
49.72***
β

GARCH

Volatility persistence

0.9981
4,775.56***
ν

DF

Student-t tail thickness

7.5173
9.07***

Persistence:

0.998

Half-life:

363 days