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V-Lab

Tortoise Nuclear Renaissance ETF Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, August 10th, 2026

1 Day

29.24%

decreased by 4.33%

1 Week

34.96%

increased by 1.39%

1 Month

41.32%

increased by 7.75%

Analysis last updated: Saturday, August 8, 2026 at 02:28 AM UTC

Date Range:

from

to

6M ·

All

graph of Tortoise Nuclear Renaissance ETF APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 18, 2025 to Aug 7, 2026

Model 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.

μ

APMEM Model

Tap to view equation

ParameterValuet-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