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PepsiCo Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

16.00%

decreased by 0.80%

1 Week

16.13%

decreased by 0.67%

1 Month

16.61%

decreased by 0.19%

Analysis last updated: Monday, September 14, 2026 at 09:33 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of PepsiCo Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 11, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 114 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 5.84 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.994, shock half-life ~114 daysv = 5.84 · fat tails
ParamValuet-stat
ωconst2.3715
0.98
αARCH0.0656
10.48***
βGARCH0.9939
160.29***
νDF5.8364
2.33**

0.994

Persistence

114d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.3715
0.98
α

ARCH

Response to squared shocks

0.0656
10.48***
β

GARCH

Volatility persistence

0.9939
160.29***
ν

DF

Student-t tail thickness

5.8364
2.33**

Persistence:

0.994

Half-life:

114 days