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V-Lab

Obayashi Corp Asy. Power MEM Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

31.13%

increased by 1.70%

1 Week

29.30%

decreased by 0.13%

1 Month

24.60%

decreased by 4.83%

Analysis last updated: Friday, September 11, 2026 at 07:50 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Obayashi Corp APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 30, 1990 to Sep 4, 2026

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 = 0.81 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

Shock decay: Shocks decay with a 11-day half-lifeδ = 0.81 · sub-quadratic power
ParamValuet-stat
ωconst0.0611
6.89***
αARCH0.2308
17.57***
βGARCH0.7552
51.29***
γleverage0.0357
1.56
δpower0.8108
4.49***

0.939

Persistence

11d

Half-life
μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0611
6.89***
α

ARCH

Response to squared shocks

0.2308
17.57***
β

GARCH

Volatility persistence

0.7552
51.29***
γ

leverage

Additional response to negative shocks

0.0357
1.56
δ

power

Transformation power

0.8108
4.49***

Persistence:

0.939

Half-life:

11 days