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FTSE 100 Implied Volatility Index 30 Days MF2-GARCH Volatility Analysis

Volatility prediction for Friday, September 25th, 2026

1 Day

96.70%

increased by 2.67%

1 Week

97.89%

increased by 3.86%

1 Month

99.90%

increased by 5.87%

Analysis last updated: Friday, September 25, 2026 at 09:06 PM UTC

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Date Range:

from

09/24/2024

to

09/24/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of FTSE 100 Implied Volatility Index 30 Days MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 3, 2000 to Sep 17, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

MF2-GARCH Model

Tap to view equation

Inverse leverage: volatility responds almost entirely to positive returns
ParamValuet-stat
mwindow26
αARCH0.2015
6.96***
βGARCH0.7121
20.16***
γleverage-0.1808
-4.86***
λ₁tau intercept0.0784
0.97
λ₂forecast adj.0.0069
2.58***
λ₃tau persistence0.9915
235.89***

0.823

Persistence

4d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

26
α

ARCH

Response to squared shocks

0.2015
6.96***
β

GARCH

Volatility persistence

0.7121
20.16***
γ

leverage

Additional response to negative shocks

-0.1808
-4.86***
λ₁

tau intercept

Baseline long-term coefficient

0.0784
0.97
λ₂

forecast adj.

Forecast performance sensitivity

0.0069
2.58***
λ₃

tau persistence

Long-term factor persistence

0.9915
235.89***

Persistence:

0.823

Half-life:

4 days