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V-Lab

Tire Company Debica S A Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

12.30%

increased by 0.04%

1 Week

13.72%

increased by 1.46%

1 Month

15.77%

increased by 3.51%

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 S0GARCH

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

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 4 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4448
5.93***
α

ARCH

Response to squared shocks

0.1653
4.86***
β

GARCH

Volatility persistence

0.6773
13.65***
γi Spline Coefficients
K=9
γ1-0.0916
-2.00**
γ20.0971
1.43
γ30.0893
1.69*
γ4-0.2182
-3.98***
γ50.2062
4.01***
γ6-0.1053
-2.12**
γ70.0134
0.28
γ80.0076
0.19
γ90.0144
0.50

Persistence:

0.843

Half-life:

4 days