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Chevron Corp Spline ILLIQ Liquidity Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Illiquidity prediction for Monday, September 21st, 2026

1 Day

7.31

decreased by 0.27

1 Week

7.51

decreased by 0.07

1 Month

7.75

increased by 0.17

Analysis last updated: Friday, September 18, 2026 at 11:22 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Chevron Corp ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model Insight

Estimated persistence of 1.000 is at or above 1 (non-stationary): illiquidity shocks do not decay and the long-run level is undefined, so long-horizon forecasts should be treated with caution.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 1.000 ≥ 1, shocks do not decay
ParamValuet-stat
ωconst1.0608
8.99***
αARCH0.0409
11.18***
βGARCH0.9591
38.66***
γi Spline Coefficients
K=1
γ10.0094
2.65***

1.000

Persistence

-

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0608
8.99***
α

ARCH

Response to squared shocks

0.0409
11.18***
β

GARCH

Volatility persistence

0.9591
38.66***
γi Spline Coefficients
K=1
γ10.0094
2.65***

Persistence:

1.000

Half-life:

-