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V-Lab

SK Hynix Inc GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 14th, 2026

1 Day

121.66%

increased by 14.47%

1 Week

121.43%

increased by 14.24%

1 Month

120.52%

increased by 13.33%

Analysis last updated: Tuesday, July 14, 2026 at 07:40 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of SK Hynix Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 26, 1996 to Jul 10, 2026

Model Insight

With persistence 0.997, volatility shocks have a half-life of 262 trading days (~1.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 76% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0441
12.49***
α

ARCH

Response to squared shocks

0.0310
19.25***
β

GARCH

Volatility persistence

0.9546
806.27***
γ

leverage

Additional response to negative shocks

0.0235
7.33***

Persistence:

0.997

Half-life:

262 days