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V-Lab
V-Lab

Bellini Nautica S P A Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

37.77%

decreased by 7.54%

1 Week

40.48%

decreased by 4.83%

1 Month

42.13%

decreased by 3.18%

Analysis last updated: Friday, September 11, 2026 at 08:06 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Bellini Nautica S P A S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 15, 2022 to Sep 4, 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 1 trading day.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst1.0638
9.52***
αARCH0.3578
4.54***
βGARCH0.2447
2.25**
γi Spline Coefficients
K=1
γ10.0064
0.56

0.603

Persistence

1d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0638
9.52***
α

ARCH

Response to squared shocks

0.3578
4.54***
β

GARCH

Volatility persistence

0.2447
2.25**
γi Spline Coefficients
K=1
γ10.0064
0.56

Persistence:

0.603

Half-life:

1 days