V-Lab
Cyanotech Corp GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, July 22nd, 2026
1 Day
193.30%
decreased by 2.85%
1 Week
193.15%
decreased by 3.00%
1 Month
192.53%
decreased by 3.62%
Analysis last updated: Wednesday, July 22, 2026 at 10:34 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 22, 1991 to Jul 10, 2026Model Insight
With persistence 0.998, volatility shocks have a half-life of 438 trading days (~1.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 173% more than positive returns
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1149 | 5.55*** |
α ARCH Response to squared shocks | 0.0150 | 9.51*** |
β GARCH Volatility persistence | 0.9704 | 837.29*** |
γ leverage Additional response to negative shocks | 0.0260 | 5.65*** |
Persistence:
0.998
Half-life:
438 days
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