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India NSE Volatility Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 4th, 2026

1 Day

74.86%

decreased by 1.76%

1 Week

76.16%

decreased by 0.46%

1 Month

80.18%

increased by 3.56%

Analysis last updated: Friday, September 4, 2026 at 11:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of India NSE Volatility Index GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 3, 2008 to Aug 27, 2026

Model Insight

Volatility shocks decay with a half-life of 19 trading days, meaning a shock loses half its impact after approximately 19 days. Returns follow a Student-t distribution with v = 3.94 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 19-day half-lifev = 3.94 · fat tails
ParamValuet-stat
ωconst33.8077
1.51
αARCH0.0677
5.39***
βGARCH0.9651
47.92***
νDF3.9406
1.75*

0.965

Persistence

19d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

33.8077
1.51
α

ARCH

Response to squared shocks

0.0677
5.39***
β

GARCH

Volatility persistence

0.9651
47.92***
ν

DF

Student-t tail thickness

3.9406
1.75*

Persistence:

0.965

Half-life:

19 days