CarMax Inc Asy. Power MEM Volatility Analysis
Volatility prediction for Wednesday, July 15th, 2026
1 Day
50.98%
decreased by 1.02%
1 Week
50.44%
decreased by 1.56%
1 Month
48.55%
decreased by 3.45%
Analysis last updated: Tuesday, July 14, 2026 at 09:46 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 4, 1997 to Jul 10, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 26% more than equivalent positive returns. The volatility power δ = 1.35 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0811 | 7.31*** |
α ARCH Response to squared shocks | 0.1459 | 32.36*** |
β GARCH Volatility persistence | 0.8540 | 212.54*** |
γ leverage Additional response to negative shocks | 0.0852 | 8.66*** |
δ power Transformation power | 1.3512 | 15.52*** |
Persistence:
0.976
Half-life:
28 days
Other Asy. Power MEM Analyses on Equities