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V-Lab

Namhwa Industrial Co Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

83.65%

decreased by 3.01%

1 Week

84.20%

decreased by 2.46%

1 Month

85.85%

decreased by 0.81%

Analysis last updated: Sunday, August 23, 2026 at 01:03 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Namhwa Industrial Co Ltd S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 29, 2018 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 16 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.3186
2.72***
α

ARCH

Response to squared shocks

0.1381
4.82***
β

GARCH

Volatility persistence

0.8199
19.07***
γi Spline Coefficients
K=10
γ10.6331
0.31
γ2-2.3803
-0.76
γ32.6266
1.10
γ4-1.0329
-0.45
γ50.7963
0.28
γ6-1.1317
-0.38
γ70.9263
0.28
γ8-2.8739
-0.67
γ98.1383
1.29
γ10-9.0721
-1.47

Persistence:

0.958

Half-life:

16 days