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V-Lab

Tire Company Debica S A GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

13.21%

decreased by 0.13%

1 Week

13.68%

increased by 0.34%

1 Month

15.35%

increased by 2.01%

Analysis last updated: Sunday, July 26, 2026 at 04:22 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Tire Company Debica S A GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 10, 1995 to Jul 24, 2026

Model Insight

With persistence 0.995, volatility shocks have a half-life of 135 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 27% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0285
17.65***
α

ARCH

Response to squared shocks

0.0553
17.76***
β

GARCH

Volatility persistence

0.9322
505.23***
γ

leverage

Additional response to negative shocks

0.0148
2.44**

Persistence:

0.995

Half-life:

135 days