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V-Lab

Manila Electric Co AGARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

33.38%

decreased by 2.81%

1 Week

34.49%

decreased by 1.70%

1 Month

38.32%

increased by 2.13%

Analysis last updated: Friday, September 11, 2026 at 09:04 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Manila Electric Co AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 7, 1995 to Sep 4, 2026

Model Insight

The news-impact curve is shifted (γ = 0.49) 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

Asymmetry: negative returns raise volatility more
ParamValuet-stat
ωconst0.1563
4.03***
αARCH0.2015
10.21***
βGARCH0.7865
51.47***
γleverage0.4879
3.34***

0.988

Persistence

58d

Half-life
σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1563
4.03***
α

ARCH

Response to squared shocks

0.2015
10.21***
β

GARCH

Volatility persistence

0.7865
51.47***
γ

leverage

Additional response to negative shocks

0.4879
3.34***

Persistence:

0.988

Half-life:

58 days