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Ballard Power Systems Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

55.01%

decreased by 5.02%

1 Week

56.46%

decreased by 3.57%

1 Month

60.73%

increased by 0.70%

Analysis last updated: Friday, September 11, 2026 at 10:05 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Ballard Power Systems Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 8, 1995 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 17 trading days, meaning a shock loses half its impact after approximately 17 days. Returns follow a Student-t distribution with v = 4.16 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 17-day half-lifev = 4.16 · fat tails
ParamValuet-stat
ωconst20.4675
1.82*
αARCH0.1065
7.01***
βGARCH0.9607
42.60***
νDF4.1617
2.80***

0.961

Persistence

17d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

20.4675
1.82*
α

ARCH

Response to squared shocks

0.1065
7.01***
β

GARCH

Volatility persistence

0.9607
42.60***
ν

DF

Student-t tail thickness

4.1617
2.80***

Persistence:

0.961

Half-life:

17 days