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V-Lab
V-Lab

Purpose Solana ETF GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, September 16th, 2026

1 Day

67.17%

increased by 6.12%

1 Week

67.81%

increased by 6.76%

1 Month

69.12%

increased by 8.07%

Analysis last updated: Wednesday, September 16, 2026 at 09:11 AM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of Purpose Solana ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 16, 2025 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 6-day half-life
ParamValuet-stat
ωconst2.1189
1.28
αARCH0.0000
0.00
βGARCH0.8292
8.94***
γleverage0.1262
0.92

0.892

Persistence

6d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.1189
1.28
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8292
8.94***
γ

leverage

Additional response to negative shocks

0.1262
0.92

Persistence:

0.892

Half-life:

6 days