V-Lab
Principal Focused Blue Chip ETF MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
16.98%
decreased by 0.74%
1 Week
18.40%
increased by 0.68%
1 Month
22.82%
increased by 5.10%
Analysis last updated: Friday, September 4, 2026 at 09:12 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 13, 2023 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 45 trading days, meaning a shock loses half its impact after approximately 45 days.
μ
MEM Model
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Shock decay: Shocks decay with a 45-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1192 | 1.35 |
| αARCH | 0.1724 | 2.00** |
| βGARCH | 0.8122 | 7.51*** |
0.985
Persistence45d
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1192 | 1.35 |
α ARCH Response to squared shocks | 0.1724 | 2.00** |
β GARCH Volatility persistence | 0.8122 | 7.51*** |
Persistence:
0.985
Half-life:
45 days
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