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V-Lab

Coil Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

17.00%

unchanged at 0.00%

1 Week

19.93%

increased by 2.93%

1 Month

24.57%

increased by 7.57%

Analysis last updated: Tuesday, July 21, 2026 at 06:32 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Coil S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 7, 1999 to Jul 17, 2026

Model Insight

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 5 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.1281
5.76***
α

ARCH

Response to squared shocks

0.2122
6.40***
β

GARCH

Volatility persistence

0.6628
16.27***
γi Spline Coefficients
K=10
γ1-0.0047
-0.05
γ20.0162
0.11
γ3-0.0220
-0.14
γ40.0110
0.07
γ50.0228
0.17
γ60.0086
0.07
γ7-0.2406
-2.03**
γ80.5050
3.77***
γ9-0.5488
-3.61***
γ100.3665
3.05***

Persistence:

0.875

Half-life:

5 days