V-Lab
S&P/TSX Composite Index EGARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
12.61%
decreased by 0.18%
1 Week
12.70%
decreased by 0.09%
1 Month
12.99%
increased by 0.20%
Analysis last updated: Friday, September 4, 2026 at 09:07 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 189% more than equivalent positive returns.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | -0.0032 | -0.76 |
α ARCH Response to squared shocks | 0.1726 | 10.88*** |
β GARCH Volatility persistence | 0.9787 | 293.03*** |
γ leverage Additional response to negative shocks | -0.0838 | -7.00*** |
Persistence:
0.979
Half-life:
32 days
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