Xi'An Peri Power Semiconductor Converting Technology Co Ltd APARCH Volatility Analysis
Volatility prediction for Tuesday, July 14th, 2026
1 Day
72.69%
increased by 7.42%
1 Week
72.05%
increased by 6.78%
1 Month
69.95%
increased by 4.68%
Analysis last updated: Tuesday, July 14, 2026 at 06:22 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 7, 2020 to Jul 10, 2026Model Insight
Volatility shocks decay with a half-life of 22 trading days, meaning a shock loses half its impact after approximately 22 days. The volatility power δ = 1.80 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
σ
APARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3607 | 3.64*** |
α ARCH Response to squared shocks | 0.0833 | 7.47*** |
β GARCH Volatility persistence | 0.8907 | 107.57*** |
γ leverage Additional response to negative shocks | -0.0513 | -1.31 |
δ power Transformation power | 1.7992 | 8.78*** |
Persistence:
0.969
Half-life:
22 days
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