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V-Lab

Shengfeng Development Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

112.77%

increased by 39.03%

1 Week

90.28%

increased by 16.54%

1 Month

82.52%

increased by 8.78%

Analysis last updated: Friday, July 24, 2026 at 10:03 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Shengfeng Development Ltd S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 2023 to Jul 24, 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 1 trading day.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.5171
2.21**
α

ARCH

Response to squared shocks

0.2741
2.45**
β

GARCH

Volatility persistence

0.0092
0.11
γi Spline Coefficients
K=7
γ1-6.1342
-1.14
γ211.4754
1.21
γ3-13.6242
-1.23
γ415.0974
1.41
γ5-3.6424
-0.51
γ6-8.1062
-1.38
γ76.0909
1.35

Persistence:

0.283

Half-life:

1 days