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Roundhill Nasdaq-100 0DTE Covered Call ETF Strategy ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, September 10th, 2026

1 Day

12.60%

decreased by 0.44%

1 Week

13.45%

increased by 0.41%

1 Month

15.72%

increased by 2.68%

Analysis last updated: Wednesday, September 9, 2026 at 09:10 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Roundhill Nasdaq-100 0DTE Covered Call ETF Strategy ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 6, 2024 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 14 trading days, meaning a shock loses half its impact after approximately 14 days. Returns follow a Student-t distribution with v = 5.33 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 14-day half-lifev = 5.33 · fat tails
ParamValuet-stat
ωconst1.6211
1.19
αARCH0.1014
2.39**
βGARCH0.9532
25.75***
νDF5.3250
0.70

0.953

Persistence

14d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.6211
1.19
α

ARCH

Response to squared shocks

0.1014
2.39**
β

GARCH

Volatility persistence

0.9532
25.75***
ν

DF

Student-t tail thickness

5.3250
0.70

Persistence:

0.953

Half-life:

14 days