V-Lab
Hangzhou Prevail Optoelectronic Equipment Co., Ltd. Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
57.35%
decreased by 1.39%
1 Week
63.15%
increased by 4.41%
1 Month
74.42%
increased by 15.68%
Analysis last updated: Tuesday, September 8, 2026 at 07:52 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 2017 to Sep 4, 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 7 trading days.
τ
Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2655 | 7.25*** |
| αARCH | 0.1758 | 5.18*** |
| βGARCH | 0.7269 | 16.21*** |
Spline Coefficients
K=1
| γ1 | 0.0367 | 2.68*** |
0.903
Persistence7d
Half-lifeτ
Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2655 | 7.25*** |
α ARCH Response to squared shocks | 0.1758 | 5.18*** |
β GARCH Volatility persistence | 0.7269 | 16.21*** |
Spline Coefficients
K=1
| γ1 | 0.0367 | 2.68*** |
Persistence:
0.903
Half-life:
7 days
Other Hangzhou Prevail Optoelectronic Equipment Co., Ltd. Analyses
Other Spline-GARCH Analyses on International Equities