V-Lab
S&P/TSX Composite Index Asy. MEM Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
8.52%
increased by 0.04%
1 Week
8.83%
increased by 0.35%
1 Month
9.85%
increased by 1.37%
Analysis last updated: Friday, August 14, 2026 at 09:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Aug 14, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 93% more than equivalent positive returns.
μ
AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0167 | 38.79*** |
α ARCH Response to squared shocks | 0.1348 | 39.38*** |
β GARCH Volatility persistence | 0.7827 | 319.87*** |
γ leverage Additional response to negative shocks | 0.1251 | 20.53*** |
Persistence:
0.980
Half-life:
34 days
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