V-Lab
ParkerVision Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
136.99%
increased by 23.75%
1 Week
140.66%
increased by 27.42%
1 Month
147.25%
increased by 34.01%
Analysis last updated: Saturday, July 25, 2026 at 09:26 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 2, 1993 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 5 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8493 | 11.24*** |
α ARCH Response to squared shocks | 0.1587 | 7.60*** |
β GARCH Volatility persistence | 0.7119 | 20.82*** |
Spline Coefficients
K=2
| γ1 | 0.0059 | 4.75*** |
| γ2 | -0.0090 | -5.67*** |
Persistence:
0.871
Half-life:
5 days
Other ParkerVision Inc Analyses
Other Zero Slope Spline-GARCH Analyses on Equities