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V-Lab

Addcn Technology Co Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

13.98%

decreased by 1.12%

1 Week

14.44%

decreased by 0.66%

1 Month

14.89%

decreased by 0.21%

Analysis last updated: Sunday, July 26, 2026 at 06:30 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Addcn Technology Co Ltd S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 3, 2012 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 2 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.7503
5.07***
α

ARCH

Response to squared shocks

0.1621
3.36***
β

GARCH

Volatility persistence

0.5723
5.52***
γi Spline Coefficients
K=9
γ1-0.5024
-1.50
γ20.3554
0.73
γ30.4577
1.53
γ4-0.8518
-2.70***
γ51.0927
3.21***
γ6-0.7888
-3.02***
γ7-0.0043
-0.02
γ80.7903
3.50***
γ9-0.7894
-4.74***

Persistence:

0.734

Half-life:

2 days