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V-Lab

Vulcan Infrastructure and Power Inc Asy. MEM Volatility Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Volatility prediction for Thursday, August 6th, 2026

1 Day

90.23%

decreased by 9.98%

1 Week

92.71%

decreased by 7.50%

1 Month

102.04%

increased by 1.83%

Analysis last updated: Wednesday, August 5, 2026 at 09:35 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Vulcan Infrastructure and Power Inc AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 15, 2021 to Jul 31, 2026

Model Insight

Estimated persistence of 1.000 is at or above 1 (non-stationary): volatility shocks do not decay and the long-run variance is undefined, so long-horizon forecasts should be treated with caution.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.9015
12.73***
α

ARCH

Response to squared shocks

0.2845
21.10***
β

GARCH

Volatility persistence

0.7070
102.52***
γ

leverage

Additional response to negative shocks

0.0170
0.80

Persistence:

1.000

Half-life:

-