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Planetel Spa Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Thursday, October 29th, 2026

1 Day

43.28%

decreased by 3.41%

1 Week

41.37%

decreased by 5.32%

1 Month

38.32%

decreased by 8.37%

Analysis last updated: Thursday, October 29, 2026 at 09:38 PM UTC

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Date Range:

from

10/28/2024

to

10/28/2026

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Planetel Spa S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 15, 2021 to Oct 23, 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

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst1.2629
5.83***
αARCH0.1631
4.53***
βGARCH0.6626
8.95***
∑γi Spline Coefficients
K=2
γ10.1275
2.13**
γ2-0.1608
-2.17**

0.826

Persistence

4d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2629
5.83***
α

ARCH

Response to squared shocks

0.1631
4.53***
β

GARCH

Volatility persistence

0.6626
8.95***
∑γi Spline Coefficients
K=2
γ10.1275
2.13**
γ2-0.1608
-2.17**

Persistence:

0.826

Half-life:

4 days