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V-Lab

Diana Tea Co Ltd GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

38.19%

decreased by 0.06%

1 Week

42.09%

increased by 3.84%

1 Month

48.25%

increased by 10.00%

Analysis last updated: Sunday, July 26, 2026 at 01:14 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Diana Tea Co Ltd GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 4, 2008 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.5216
22.94***
α

ARCH

Response to squared shocks

0.1923
14.12***
β

GARCH

Volatility persistence

0.6876
65.95***
γ

leverage

Additional response to negative shocks

-0.0385
-1.73*

Persistence:

0.861

Half-life:

5 days