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V-Lab

John Wiley & Sons Inc APARCH Volatility Analysis

Volatility prediction for Wednesday, August 12th, 2026

1 Day

46.84%

increased by 5.37%

1 Week

46.51%

increased by 5.04%

1 Month

45.36%

increased by 3.89%

Analysis last updated: Tuesday, August 11, 2026 at 10:27 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of John Wiley & Sons Inc APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Aug 7, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 102% more than equivalent positive returns. The volatility power δ = 1.11 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

0.0686
18.51***
α

ARCH

Response to squared shocks

0.1032
36.53***
β

GARCH

Volatility persistence

0.8917
280.24***
γ

leverage

Additional response to negative shocks

0.3061
12.52***
δ

power

Transformation power

1.1083
27.03***

Persistence:

0.975

Half-life:

28 days