V-Lab
China Yangtze Power Co Ltd MF2-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
22.49%
increased by 1.66%
1 Week
22.23%
increased by 1.40%
1 Month
21.88%
increased by 1.05%
Analysis last updated: Wednesday, August 5, 2026 at 06:12 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 18, 2003 to Jul 31, 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 | 0.0646 | 14.08*** |
β GARCH Volatility persistence | 0.8534 | 42.15*** |
γ leverage Additional response to negative shocks | -0.0071 | -1.43 |
λ₁ tau intercept Baseline long-term coefficient | 0.0130 | 2.47** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0467 | 2.12** |
λ₃ tau persistence Long-term factor persistence | 0.9465 | 39.18*** |
Persistence:
0.914
Half-life:
8 days
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