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V-Lab
V-Lab

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

Volatility prediction for Monday, September 21st, 2026

1 Day

50.74%

decreased by 0.74%

1 Week

54.39%

increased by 2.91%

1 Month

55.54%

increased by 4.06%

Analysis last updated: Saturday, September 19, 2026 at 10:35 PM UTC

Date Range:

from

to

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 Sep 18, 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 = 3.62 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 = 3.62 · fat tails
ParamValuet-stat
ωconst12.3997
1.06
αARCH0.1359
0.31
βGARCH0.3425
0.67
νDF3.6176
0.17

0.343

Persistence

1d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

12.3997
1.06
α

ARCH

Response to squared shocks

0.1359
0.31
β

GARCH

Volatility persistence

0.3425
0.67
ν

DF

Student-t tail thickness

3.6176
0.17

Persistence:

0.343

Half-life:

1 days