V-Lab
Tortoise Nuclear Renaissance ETF Asy. Power MEM Volatility Analysis
Volatility prediction for Monday, August 10th, 2026
1 Day
29.24%
1 Week
34.96%
1 Month
41.32%
Analysis last updated: Saturday, August 8, 2026 at 02:28 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 18, 2025 to Aug 7, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 76% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets. The volatility power δ = 1.20 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7821 | 4.56*** |
α ARCH Response to squared shocks | 0.2955 | 7.66*** |
β GARCH Volatility persistence | 0.5290 | 8.24*** |
γ leverage Additional response to negative shocks | -0.2304 | -2.16** |
δ power Transformation power | 1.2006 | 10.20*** |
Persistence:
0.771
Half-life:
3 days
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