V-Lab
Catalyst Media Group PLC MEM Volatility Analysis
Volatility prediction for Monday, September 7th, 2026
1 Day
41.63%
decreased by 0.04%
1 Week
44.81%
increased by 3.14%
1 Month
50.13%
increased by 8.46%
Analysis last updated: Sunday, September 6, 2026 at 02:09 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 2007 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days.
μ
MEM Model
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Shock decay: Shocks decay with a 5-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.5361 | 1.61 |
| αARCH | 0.2149 | 2.26** |
| βGARCH | 0.6523 | 10.87*** |
0.867
Persistence5d
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.5361 | 1.61 |
α ARCH Response to squared shocks | 0.2149 | 2.26** |
β GARCH Volatility persistence | 0.6523 | 10.87*** |
Persistence:
0.867
Half-life:
5 days
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