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V-Lab
V-Lab

20Y US Treasury CMT 20 Year MF2-GARCH Volatility Analysis

Volatility prediction for Thursday, September 24th, 2026

1 Day

14.19%

increased by 0.62%

1 Week

14.27%

increased by 0.70%

1 Month

14.58%

increased by 1.01%

Analysis last updated: Thursday, September 24, 2026 at 03:00 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of 20Y US Treasury CMT 20 Year MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 1, 1993 to Sep 18, 2026

Model Insight

With persistence 0.999, volatility shocks have a half-life of 990 trading days (~3.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 190% more than positive returns

σ

MF2-GARCH Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~990 daysLeverage: Negative returns increase volatility 190% more than positive returns
ParamValuet-stat
mwindow126
αARCH0.0182
4.97***
βGARCH0.9639
232.10***
γleverage0.0345
4.80***
λ₁tau intercept0.0015
0.32
λ₂forecast adj.0.0000
0.00
λ₃tau persistence0.9998
184.77***

0.999

Persistence

990d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

126
α

ARCH

Response to squared shocks

0.0182
4.97***
β

GARCH

Volatility persistence

0.9639
232.10***
γ

leverage

Additional response to negative shocks

0.0345
4.80***
λ₁

tau intercept

Baseline long-term coefficient

0.0015
0.32
λ₂

forecast adj.

Forecast performance sensitivity

0.0000
0.00
λ₃

tau persistence

Long-term factor persistence

0.9998
184.77***

Persistence:

0.999

Half-life:

990 days