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V-Lab

Mercury NZ Limited GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

42.95%

decreased by 2.30%

1 Week

42.84%

decreased by 2.41%

1 Month

42.52%

decreased by 2.73%

Analysis last updated: Saturday, July 25, 2026 at 10:01 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Mercury NZ Limited GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 10, 2013 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 14 trading days, meaning a shock loses half its impact after approximately 14 days.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.3342
15.53***
α

ARCH

Response to squared shocks

0.0986
12.11***
β

GARCH

Volatility persistence

0.8492
149.06***
γ

leverage

Additional response to negative shocks

0.0077
0.53

Persistence:

0.952

Half-life:

14 days