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20Y US Treasury 20 Year Zero Coupon Yield Continuously Compounded GJR-GARCH Volatility Analysis

Volatility prediction for Monday, November 2nd, 2026

1 Day

15.86%

decreased by 0.29%

1 Week

15.89%

decreased by 0.26%

1 Month

16.01%

decreased by 0.14%

Analysis last updated: Wednesday, November 4, 2026 at 04:05 AM UTC

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Date Range:

from

10/30/2024

to

10/30/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of 20Y US Treasury 20 Year Zero Coupon Yield Continuously Compounded GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Oct 30, 2026

Model Insight

With persistence 0.999, volatility shocks have a half-life of 869 trading days (~3.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 123% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~869 daysLeverage: Negative returns increase volatility 123% more than positive returns
ParamValuet-stat
ωconst0.0027
1.43
αARCH0.0231
5.18***
βGARCH0.9619
234.83***
γleverage0.0285
2.41**

0.999

Persistence

869d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0027
1.43
α

ARCH

Response to squared shocks

0.0231
5.18***
β

GARCH

Volatility persistence

0.9619
234.83***
γ

leverage

Additional response to negative shocks

0.0285
2.41**

Persistence:

0.999

Half-life:

869 days