Hangzhou Prevail Optoelectronic Equipment Co., Ltd. Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, October 26th, 2026
1 Day
44.54%
decreased by 0.96%
1 Week
49.88%
increased by 4.38%
1 Month
59.43%
increased by 13.93%
Analysis last updated: Sunday, October 25, 2026 at 02:13 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 2017 to Oct 23, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 6 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.4081 | 6.59*** |
| αARCH | 0.1883 | 5.10*** |
| βGARCH | 0.7021 | 14.59*** |
Spline Coefficients
K=2
| γ1 | 0.0769 | 2.73*** |
| γ2 | -0.0983 | -2.74*** |
0.890
Persistence6d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.4081 | 6.59*** |
α ARCH Response to squared shocks | 0.1883 | 5.10*** |
β GARCH Volatility persistence | 0.7021 | 14.59*** |
Spline Coefficients
K=2
| γ1 | 0.0769 | 2.73*** |
| γ2 | -0.0983 | -2.74*** |
Persistence:
0.890
Half-life:
6 days
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