Skip to main content
V-Lab

SP Funds S&P Global Tech ETF AGARCH Volatility Analysis

Volatility prediction for Thursday, August 20th, 2026

1 Day

28.02%

decreased by 2.04%

1 Week

28.02%

decreased by 2.04%

1 Month

28.01%

decreased by 2.05%

Analysis last updated: Wednesday, August 19, 2026 at 09:43 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of SP Funds S&P Global Tech ETF AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 1, 2023 to Aug 14, 2026

Model Insight

The news-impact curve is shifted (γ = 0.93) so that negative returns raise next-day volatility more than positive returns of the same size. The gap is largest for small shocks and narrows for larger ones.

σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2532
8.48***
α

ARCH

Response to squared shocks

0.1193
14.61***
β

GARCH

Volatility persistence

0.7660
59.42***
γ

leverage

Additional response to negative shocks

0.9301
15.58***

Persistence:

0.885

Half-life:

6 days