V-Lab
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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 6, 2024 to Sep 4, 2026Model 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
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.6211 | 1.19 |
| αARCH | 0.1014 | 2.39** |
| βGARCH | 0.9532 | 25.75*** |
| νDF | 5.3250 | 0.70 |
0.953
Persistence14d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-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
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