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US Dollar to Turkish New Lira GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 29th, 2026

1 Day

3.23%

increased by 0.08%

1 Week

3.34%

increased by 0.19%

1 Month

3.74%

increased by 0.59%

Analysis last updated: Monday, September 28, 2026 at 07:10 PM UTC

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graph of US Dollar to Turkish New Lira GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 28, 2001 to Sep 25, 2026

Model Insight

With persistence 0.999, volatility shocks have a half-life of 693 trading days (~2.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.29 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~693 daysv = 2.29 · fat tails
ParamValuet-stat
ωconst1.4448
1.93*
αARCH0.0601
32.66***
βGARCH0.9990
1,932.30***
νDF2.2937
355.94***

0.999

Persistence

693d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4448
1.93*
α

ARCH

Response to squared shocks

0.0601
32.66***
β

GARCH

Volatility persistence

0.9990
1,932.30***
ν

DF

Student-t tail thickness

2.2937
355.94***

Persistence:

0.999

Half-life:

693 days