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V-Lab

S&P/ASX 200 Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, September 7th, 2026

1 Day

12.18%

decreased by 0.73%

1 Week

11.96%

decreased by 0.95%

1 Month

11.27%

decreased by 1.64%

Analysis last updated: Friday, September 4, 2026 at 07:02 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P/ASX 200 APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 2000 to Sep 4, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 109% more than equivalent positive returns. The volatility power δ = 1.17 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

Leverage: Negative returns increase volatility 109% more than positive returnsδ = 1.17 · sub-quadratic power
ParamValuet-stat
ωconst0.0213
8.31***
αARCH0.1428
12.36***
βGARCH0.8432
71.74***
γleverage0.3054
7.75***
δpower1.1655
7.74***

0.960

Persistence

17d

Half-life
μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0213
8.31***
α

ARCH

Response to squared shocks

0.1428
12.36***
β

GARCH

Volatility persistence

0.8432
71.74***
γ

leverage

Additional response to negative shocks

0.3054
7.75***
δ

power

Transformation power

1.1655
7.74***

Persistence:

0.960

Half-life:

17 days