V-Lab
China Yangtze Power Co Ltd MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
18.00%
decreased by 0.21%
1 Week
18.11%
decreased by 0.10%
1 Month
18.31%
increased by 0.10%
Analysis last updated: Tuesday, August 25, 2026 at 06:06 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 18, 2003 to Aug 21, 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
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 26 | |
α ARCH Response to squared shocks | 0.0653 | 14.25*** |
β GARCH Volatility persistence | 0.8526 | 42.48*** |
γ leverage Additional response to negative shocks | -0.0080 | -1.61 |
λ₁ tau intercept Baseline long-term coefficient | 0.0128 | 2.49** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0461 | 2.15** |
λ₃ tau persistence Long-term factor persistence | 0.9471 | 40.12*** |
Persistence:
0.914
Half-life:
8 days
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