V-Lab
Zhejiang Tion Vanly Tech Co Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
46.18%
increased by 2.50%
1 Week
46.65%
increased by 2.97%
1 Month
46.97%
increased by 3.29%
Analysis last updated: Saturday, July 25, 2026 at 10:54 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 9, 2025 to Jul 24, 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 1 trading day.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.7503 | 2.78*** |
α ARCH Response to squared shocks | 0.0912 | 1.38 |
β GARCH Volatility persistence | 0.5289 | 2.34** |
Spline Coefficients
K=4
| γ1 | 28.7257 | 2.16** |
| γ2 | -38.9525 | -2.03** |
| γ3 | 26.6460 | 2.33** |
| γ4 | -27.2814 | -3.77*** |
Persistence:
0.620
Half-life:
1 days
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