China Yangtze Power Co Ltd MEM Volatility Analysis
Volatility prediction for Friday, October 16th, 2026
1 Day
14.05%
decreased by 0.47%
1 Week
14.57%
increased by 0.05%
1 Month
16.27%
increased by 1.75%
Analysis last updated: Friday, October 16, 2026 at 06:26 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 Oct 9, 2026Model Insight
Volatility shocks decay with a half-life of 36 trading days, meaning a shock loses half its impact after approximately 36 days.
μ
MEM Model
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Shock decay: Shocks decay with a 36-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0450 | 2.14** |
| αARCH | 0.2032 | 10.35*** |
| βGARCH | 0.7777 | 54.05*** |
0.981
Persistence36d
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0450 | 2.14** |
α ARCH Response to squared shocks | 0.2032 | 10.35*** |
β GARCH Volatility persistence | 0.7777 | 54.05*** |
Persistence:
0.981
Half-life:
36 days
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