V-Lab
General Mills Inc GARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
30.83%
decreased by 0.28%
1 Week
30.66%
decreased by 0.45%
1 Month
30.02%
decreased by 1.09%
Analysis last updated: Wednesday, September 9, 2026 at 09:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 68 trading days, meaning a shock loses half its impact after approximately 68 days.
σ
GARCH Model
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Shock decay: Shocks decay with a 68-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0175 | 4.00*** |
| αARCH | 0.0359 | 6.63*** |
| βGARCH | 0.9539 | 151.79*** |
0.990
Persistence68d
Half-lifeσ
GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0175 | 4.00*** |
α ARCH Response to squared shocks | 0.0359 | 6.63*** |
β GARCH Volatility persistence | 0.9539 | 151.79*** |
Persistence:
0.990
Half-life:
68 days
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