V-Lab
CBOE EuroCurrency ETF Volatility Index Asy. Power MEM Volatility Analysis
Last recorded values (Monday, January 27th, 2025):
1 Day
186.77%
1 Week
181.28%
1 Month
164.14%
Analysis last updated: Wednesday, September 2, 2026 at 04:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 1, 2008 to Jan 24, 2025Model Insight
Volatility shocks decay with a half-life of 19 trading days, meaning a shock loses half its impact after approximately 19 days. The volatility power δ = 1.06 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APMEM Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2740 | 2.52** |
| αARCH | 0.1092 | 4.20*** |
| βGARCH | 0.8762 | 29.34*** |
| γleverage | -0.0427 | -0.30 |
| δpower | 1.0594 | 4.64*** |
0.964
Persistence19d
Half-lifeAPMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2740 | 2.52** |
α ARCH Response to squared shocks | 0.1092 | 4.20*** |
β GARCH Volatility persistence | 0.8762 | 29.34*** |
γ leverage Additional response to negative shocks | -0.0427 | -0.30 |
δ power Transformation power | 1.0594 | 4.64*** |
Persistence:
0.964
Half-life:
19 days
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