V-Lab
China Yangtze Power Co Ltd MF2-GARCH Volatility Analysis
Volatility prediction for Thursday, October 8th, 2026
1 Day
14.03%
decreased by 0.12%
1 Week
14.32%
increased by 0.17%
1 Month
15.02%
increased by 0.87%
Analysis last updated: Thursday, October 1, 2026 at 06:31 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 18, 2003 to Sep 30, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 26 | |
| αARCH | 0.0662 | 5.10*** |
| βGARCH | 0.8533 | 27.35*** |
| γleverage | -0.0087 | -0.51 |
| λ₁tau intercept | 0.0123 | 2.15** |
| λ₂forecast adj. | 0.0452 | 3.26*** |
| λ₃tau persistence | 0.9481 | 60.90*** |
0.915
Persistence8d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 26 | |
α ARCH Response to squared shocks | 0.0662 | 5.10*** |
β GARCH Volatility persistence | 0.8533 | 27.35*** |
γ leverage Additional response to negative shocks | -0.0087 | -0.51 |
λ₁ tau intercept Baseline long-term coefficient | 0.0123 | 2.15** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0452 | 3.26*** |
λ₃ tau persistence Long-term factor persistence | 0.9481 | 60.90*** |
Persistence:
0.915
Half-life:
8 days
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