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V-Lab

Portfolio Building Block Integrated Oil Gas Exploration & Production Index ETF Asy. Power MEM Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

35.34%

increased by 0.22%

1 Week

35.18%

increased by 0.06%

1 Month

34.79%

decreased by 0.33%

Analysis last updated: Monday, July 20, 2026 at 09:29 PM UTC

Date Range:

from

to

6M ·

All

graph of Portfolio Building Block Integrated Oil Gas Exploration & Production Index ETF APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 25, 2025 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days. The volatility power δ = 1.12 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

0.2172
5.30***
α

ARCH

Response to squared shocks

0.0244
0.56
β

GARCH

Volatility persistence

0.8873
34.18***
γ

leverage

Additional response to negative shocks

-1.0000
-0.32
δ

power

Transformation power

1.1234
13.38***

Persistence:

0.909

Half-life:

7 days