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V-Lab
V-Lab

Pngs Reva Diamond Jewellery Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, October 22nd, 2026

1 Day

53.69%

decreased by 2.61%

1 Week

58.36%

increased by 2.06%

1 Month

60.10%

increased by 3.80%

Analysis last updated: Thursday, October 22, 2026 at 07:06 PM UTC

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Date Range:

from

10/21/2024

to

10/21/2026

6M ·

All

graph of Pngs Reva Diamond Jewellery Ltd GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 4, 2026 to Oct 19, 2026

Model Insight

Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day. Returns follow a Student-t distribution with v = 3.45 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 1-day half-lifev = 3.45 · fat tails
ParamValuet-stat
ωlong-run14.7079
0.97
αscore0.1519
0.39
βpersistence0.4214
0.91
νDF3.4466
0.23

0.421

Persistence

1d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

14.7079
0.97
α

score

Weight on the scaled score

0.1519
0.39
β

persistence

Volatility persistence

0.4214
0.91
ν

DF

Student-t tail thickness

3.4466
0.23

Persistence:

0.421

Half-life:

1 days