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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Cyanotech Corp GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 22, 1991 to Jul 10, 2026

Model 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

ParameterValuet-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