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Ishares Core Sp500 IDX (Cad) GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 29th, 2026

1 Day

11.27%

increased by 0.99%

1 Week

11.57%

increased by 1.29%

1 Month

12.54%

increased by 2.26%

Analysis last updated: Tuesday, September 29, 2026 at 09:09 AM UTC

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graph of Ishares Core Sp500 IDX (Cad) GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 29, 2001 to Sep 25, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

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Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0248
4.02***
αARCH0.0008
0.04
βGARCH0.8893
73.39***
γleverage0.1760
5.97***

0.978

Persistence

31d

Half-life
σ

GJR-GARCH Model

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ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0248
4.02***
α

ARCH

Response to squared shocks

0.0008
0.04
β

GARCH

Volatility persistence

0.8893
73.39***
γ

leverage

Additional response to negative shocks

0.1760
5.97***

Persistence:

0.978

Half-life:

31 days