V-Lab
Neogen Corp Asy. MEM Volatility Analysis
Volatility prediction for Thursday, August 20th, 2026
1 Day
51.00%
increased by 3.00%
1 Week
51.14%
increased by 3.14%
1 Month
51.64%
increased by 3.64%
Analysis last updated: Wednesday, August 19, 2026 at 09:27 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 12, 1992 to Aug 14, 2026Model Insight
Volatility shocks decay with a half-life of 40 trading days, meaning a shock loses half its impact after approximately 40 days.
μ
AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2045 | 22.01*** |
α ARCH Response to squared shocks | 0.1772 | 31.46*** |
β GARCH Volatility persistence | 0.7975 | 200.27*** |
γ leverage Additional response to negative shocks | 0.0167 | 2.08** |
Persistence:
0.983
Half-life:
40 days
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