V-Lab
Borsa Istanbul 100 Index MF2-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
22.47%
increased by 0.07%
1 Week
23.27%
increased by 0.87%
1 Month
24.93%
increased by 2.53%
Analysis last updated: Friday, July 24, 2026 at 04:06 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Jul 24, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 161% more than equivalent positive returns.
σ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0569 | 13.40*** |
β GARCH Volatility persistence | 0.7925 | 137.56*** |
γ leverage Additional response to negative shocks | 0.0916 | 15.05*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0009 | 0.85 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0055 | 3.31*** |
λ₃ tau persistence Long-term factor persistence | 0.9943 | 500.88*** |
Persistence:
0.895
Half-life:
6 days
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