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V-Lab

SK Hynix Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

141.28%

decreased by 4.44%

1 Week

141.08%

decreased by 4.64%

1 Month

140.26%

decreased by 5.46%

Analysis last updated: Wednesday, August 5, 2026 at 07:52 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

5Y ·

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 Jul 31, 2026

Model Insight

With persistence 0.998, volatility shocks have a half-life of 364 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 = 7.51 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

18.7284
8.64***
α

ARCH

Response to squared shocks

0.0421
49.79***
β

GARCH

Volatility persistence

0.9981
4,775.58***
ν

DF

Student-t tail thickness

7.5083
9.10***

Persistence:

0.998

Half-life:

364 days