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V-Lab

Iris Metals Ltd APARCH Volatility Analysis

Volatility prediction for Monday, July 20th, 2026

1 Day

99.74%

decreased by 0.39%

1 Week

102.97%

increased by 2.84%

1 Month

111.56%

increased by 11.43%

Analysis last updated: Saturday, July 18, 2026 at 08:50 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Iris Metals Ltd APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 23, 2021 to Jul 17, 2026
Illiquid Asset

Model Insight

Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days. The volatility power δ = 1.26 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

σ

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.8653
3.36***
α

ARCH

Response to squared shocks

0.1116
12.10***
β

GARCH

Volatility persistence

0.8448
54.96***
γ

leverage

Additional response to negative shocks

-0.0696
-1.82*
δ

power

Transformation power

1.2614
11.14***

Persistence:

0.937

Half-life:

11 days