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V-Lab

Varopakorn Co Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

124.21%

decreased by 24.71%

1 Week

110.49%

decreased by 38.43%

1 Month

79.39%

decreased by 69.53%

Analysis last updated: Sunday, August 23, 2026 at 02:34 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Varopakorn Co S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 17, 1992 to Aug 21, 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 5 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.5089
5.73***
α

ARCH

Response to squared shocks

0.2018
6.58***
β

GARCH

Volatility persistence

0.6654
16.55***
γi Spline Coefficients
K=10
γ10.3436
3.39***
γ2-0.7303
-4.36***
γ30.5604
4.07***
γ4-0.1786
-1.41
γ5-0.0166
-0.12
γ60.0482
0.36
γ7-0.1281
-1.03
γ80.3000
2.62***
γ9-0.4289
-3.92***
γ100.3424
4.32***

Persistence:

0.867

Half-life:

5 days