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Calamos S&P 500 Stru ETF JAN GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, November 10th, 2026

1 Day

5.84%

decreased by 0.42%

1 Week

5.85%

decreased by 0.41%

1 Month

5.92%

decreased by 0.34%

Analysis last updated: Tuesday, November 10, 2026 at 03:20 AM UTC

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Date Range:

from

11/09/2024

to

11/09/2026

6M ·

1Y ·

All

graph of Calamos S&P 500 Stru ETF JAN GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 2025 to Nov 6, 2026

Model Insight

With persistence 0.995, volatility shocks have a half-life of 147 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 0.995, shock half-life ~147 days
ParamValuet-stat
ωconst0.0010
1.07
αARCH0.0000
0.00
βGARCH0.8622
14.69***
γleverage0.2662
1.80*

0.995

Persistence

147d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0010
1.07
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8622
14.69***
γ

leverage

Additional response to negative shocks

0.2662
1.80*

Persistence:

0.995

Half-life:

147 days