V-Lab
Ballard Power Systems Inc EGARCH Volatility Analysis
Volatility prediction for Thursday, August 6th, 2026
1 Day
78.51%
decreased by 1.75%
1 Week
78.06%
decreased by 2.20%
1 Month
77.04%
decreased by 3.22%
Analysis last updated: Wednesday, August 5, 2026 at 09:06 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 8, 1995 to Jul 31, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 18% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2690 | 19.68*** |
α ARCH Response to squared shocks | 0.2796 | 26.34*** |
β GARCH Volatility persistence | 0.9139 | 204.05*** |
γ leverage Additional response to negative shocks | 0.0228 | 2.57** |
Persistence:
0.914
Half-life:
8 days
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