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V-Lab

Addcn Technology Co Ltd APARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

15.25%

decreased by 0.12%

1 Week

15.44%

increased by 0.07%

1 Month

16.18%

increased by 0.81%

Analysis last updated: Tuesday, July 21, 2026 at 08:16 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Addcn Technology Co Ltd APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 3, 2012 to Jul 17, 2026

Model Insight

With persistence 0.999, volatility shocks have a half-life of 620 trading days (~2.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0123
6.63***
α

ARCH

Response to squared shocks

0.0519
12.06***
β

GARCH

Volatility persistence

0.9481
326.93***
γ

leverage

Additional response to negative shocks

-0.0347
-1.09
δ

power

Transformation power

1.9361
22.27***

Persistence:

0.999

Half-life:

620 days