V-Lab
Catalyst Media Group PLC Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 1st, 2026
1 Day
31.82%
decreased by 0.93%
1 Week
34.71%
increased by 1.96%
1 Month
37.38%
increased by 4.63%
Analysis last updated: Sunday, August 30, 2026 at 03:24 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 2007 to Aug 28, 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 2 trading days.
τ
Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.3726 | 3.00*** |
α ARCH Response to squared shocks | 0.1579 | 2.99*** |
β GARCH Volatility persistence | 0.5738 | 5.24*** |
Spline Coefficients
K=10
| γ1 | 0.8916 | 0.33 |
| γ2 | -0.9432 | -0.22 |
| γ3 | -0.8563 | -0.29 |
| γ4 | 3.4912 | 1.10 |
| γ5 | -4.5073 | -1.32 |
| γ6 | 2.1305 | 0.64 |
| γ7 | 1.2304 | 0.43 |
| γ8 | -5.6342 | -2.49** |
| γ9 | 11.4450 | 5.33*** |
| γ10 | -15.6087 | -4.39*** |
Persistence:
0.732
Half-life:
2 days
Other Catalyst Media Group PLC Analyses
Other Spline-GARCH Analyses on International Equities