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V-Lab

Tortoise Nuclear Renaissance ETF MEM Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

31.99%

decreased by 1.19%

1 Week

39.93%

increased by 6.75%

1 Month

45.33%

increased by 12.15%

Analysis last updated: Monday, July 20, 2026 at 09:50 PM UTC

Date Range:

from

to

6M ·

All

graph of Tortoise Nuclear Renaissance ETF MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 18, 2025 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.

μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.8985
6.74***
α

ARCH

Response to squared shocks

0.4062
4.10***
β

GARCH

Volatility persistence

0.2663
6.91***

Persistence:

0.673

Half-life:

2 days