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V-Lab

Hua Hong Grace Semiconductor Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

91.48%

decreased by 9.84%

1 Week

91.06%

decreased by 10.26%

1 Month

90.03%

decreased by 11.29%

Analysis last updated: Saturday, August 22, 2026 at 07:04 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Hua Hong Grace Semiconductor Ltd S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 7, 2023 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 8 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.5586
3.92***
α

ARCH

Response to squared shocks

0.1660
3.02***
β

GARCH

Volatility persistence

0.7527
9.58***
γi Spline Coefficients
K=1
γ1-0.1565
-3.09***

Persistence:

0.919

Half-life:

8 days