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V-Lab

Proshares S&P 500 EX-Technology ETF Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, August 10th, 2026

1 Day

15.51%

decreased by 0.60%

1 Week

15.75%

decreased by 0.36%

1 Month

16.47%

increased by 0.36%

Analysis last updated: Saturday, August 8, 2026 at 02:27 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Proshares S&P 500 EX-Technology ETF APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 27, 2015 to Aug 7, 2026
Illiquid Asset

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 72% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.

μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0576
14.65***
α

ARCH

Response to squared shocks

0.1026
13.07***
β

GARCH

Volatility persistence

0.8506
118.93***
γ

leverage

Additional response to negative shocks

-0.1327
-2.56**
δ

power

Transformation power

2.0333
13.09***

Persistence:

0.956

Half-life:

16 days