V-Lab
S&P/TSX Composite Index MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
14.10%
decreased by 0.88%
1 Week
13.97%
decreased by 1.01%
1 Month
13.60%
decreased by 1.38%
Analysis last updated: Friday, September 11, 2026 at 10:03 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Sep 11, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
MF2-GARCH Model
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Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| mwindow | 41 | |
| αARCH | 0.0146 | 1.39 |
| βGARCH | 0.8242 | 59.25*** |
| γleverage | 0.1689 | 9.80*** |
| λ₁tau intercept | 0.0039 | 2.10** |
| λ₂forecast adj. | 0.0482 | 3.75*** |
| λ₃tau persistence | 0.9468 | 65.11*** |
0.923
Persistence9d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 41 | |
α ARCH Response to squared shocks | 0.0146 | 1.39 |
β GARCH Volatility persistence | 0.8242 | 59.25*** |
γ leverage Additional response to negative shocks | 0.1689 | 9.80*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0039 | 2.10** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0482 | 3.75*** |
λ₃ tau persistence Long-term factor persistence | 0.9468 | 65.11*** |
Persistence:
0.923
Half-life:
9 days
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