Alphabet Inc GARCH Volatility Analysis
Volatility prediction for Monday, October 12th, 2026
1 Day
24.57%
decreased by 0.29%
1 Week
24.96%
increased by 0.10%
1 Month
26.21%
increased by 1.35%
Analysis last updated: Saturday, October 10, 2026 at 12:07 AM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 19, 2004 to Oct 9, 2026Model Insight
Volatility shocks decay with a half-life of 24 trading days, meaning a shock loses half its impact after approximately 24 days.
σ
GARCH Model
Tap to view equation
Shock decay: Shocks decay with a 24-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1068 | 2.84*** |
| αARCH | 0.0620 | 4.62*** |
| βGARCH | 0.9098 | 43.58*** |
0.972
Persistence24d
Half-lifeσ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1068 | 2.84*** |
α ARCH Response to squared shocks | 0.0620 | 4.62*** |
β GARCH Volatility persistence | 0.9098 | 43.58*** |
Persistence:
0.972
Half-life:
24 days
Other GARCH Analyses on Equities