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V-Lab

30Y US Treasury CMT 30 Year Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, November 9th, 2026

1 Day

15.37%

decreased by 0.28%

1 Week

15.49%

decreased by 0.16%

1 Month

15.94%

increased by 0.29%

Analysis last updated: Saturday, November 7, 2026 at 05:01 AM UTC

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Date Range:

from

11/06/2024

to

11/06/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of 30Y US Treasury CMT 30 Year S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Nov 6, 2026

Model Insight

With persistence 0.995, volatility shocks have a half-life of 148 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

High persistence: persistence 0.995, shock half-life ~148 days
ParamValuet-stat
ωconst0.6601
6.67***
αARCH0.0447
8.35***
βGARCH0.9506
173.76***
∑γi Spline Coefficients
K=1
γ1-0.0006
-3.19***

0.995

Persistence

148d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.6601
6.67***
α

ARCH

Response to squared shocks

0.0447
8.35***
β

GARCH

Volatility persistence

0.9506
173.76***
∑γi Spline Coefficients
K=1
γ1-0.0006
-3.19***

Persistence:

0.995

Half-life:

148 days