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V-Lab

1M US Treasury CMT 1 Month Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Thursday, September 24th, 2026

1 Day

11.04%

decreased by 0.28%

1 Week

11.31%

decreased by 0.01%

1 Month

12.32%

increased by 1.00%

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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of 1M US Treasury CMT 1 Month S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 31, 2001 to Sep 18, 2026

Model Insight

With persistence 0.999, volatility shocks have a half-life of 536 trading days (~2.1 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 0.999, shock half-life ~536 days
ParamValuet-stat
ωconst2.0074
1.45
αARCH0.1457
8.99***
βGARCH0.8530
54.41***
γi Spline Coefficients
K=9
γ10.4690
0.58
γ20.7842
0.65
γ3-2.3564
-2.64***
γ41.4501
2.35**
γ5-0.7158
-2.11**
γ60.2221
0.86
γ70.3597
1.68*
γ80.0429
0.18
γ9-0.3870
-1.69*

0.999

Persistence

536d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.0074
1.45
α

ARCH

Response to squared shocks

0.1457
8.99***
β

GARCH

Volatility persistence

0.8530
54.41***
γi Spline Coefficients
K=9
γ10.4690
0.58
γ20.7842
0.65
γ3-2.3564
-2.64***
γ41.4501
2.35**
γ5-0.7158
-2.11**
γ60.2221
0.86
γ70.3597
1.68*
γ80.0429
0.18
γ9-0.3870
-1.69*

Persistence:

0.999

Half-life:

536 days