V-Lab
CME Live Cattle APARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
20.34%
1 Week
20.41%
1 Month
20.68%
Analysis last updated: Wednesday, September 9, 2026 at 02:04 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 1, 2001 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 48 trading days, meaning a shock loses half its impact after approximately 48 days. The volatility power δ = 0.90 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APARCH Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0200 | 3.02*** |
| αARCH | 0.0344 | 2.94*** |
| βGARCH | 0.9584 | 71.35*** |
| γleverage | 0.2457 | 0.69 |
| δpower | 0.8999 | 1.64 |
0.986
Persistence48d
Half-lifeAPARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0200 | 3.02*** |
α ARCH Response to squared shocks | 0.0344 | 2.94*** |
β GARCH Volatility persistence | 0.9584 | 71.35*** |
γ leverage Additional response to negative shocks | 0.2457 | 0.69 |
δ power Transformation power | 0.8999 | 1.64 |
Persistence:
0.986
Half-life:
48 days
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