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V-Lab
V-Lab

Smart Powerr Corp Spline-GARCH Volatility Analysis

Volatility prediction for Monday, September 7th, 2026

1 Day

266.51%

decreased by 12.72%

1 Week

310.30%

increased by 31.07%

1 Month

345.99%

increased by 66.76%

Analysis last updated: Saturday, September 5, 2026 at 09:28 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Smart Powerr Corp SGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 4, 2001 to Sep 4, 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 2 trading days.

τ

Spline-GARCH Model

Tap to view equation

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst4.0574
4.55***
αARCH0.2791
7.47***
βGARCH0.4323
7.09***
γi Spline Coefficients
K=9
γ10.6274
5.17***
γ2-1.0596
-6.30***
γ30.8622
7.42***
γ4-0.6679
-5.59***
γ50.4308
3.08***
γ6-0.3125
-1.36
γ70.0527
0.19
γ80.2147
1.02
γ90.1283
0.63

0.711

Persistence

2d

Half-life
τ

Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

4.0574
4.55***
α

ARCH

Response to squared shocks

0.2791
7.47***
β

GARCH

Volatility persistence

0.4323
7.09***
γi Spline Coefficients
K=9
γ10.6274
5.17***
γ2-1.0596
-6.30***
γ30.8622
7.42***
γ4-0.6679
-5.59***
γ50.4308
3.08***
γ6-0.3125
-1.36
γ70.0527
0.19
γ80.2147
1.02
γ90.1283
0.63

Persistence:

0.711

Half-life:

2 days