V-Lab
Vietnam Airlines Jsc MEM Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
40.47%
increased by 2.37%
1 Week
40.99%
increased by 2.89%
1 Month
42.04%
increased by 3.94%
Analysis last updated: Sunday, August 16, 2026 at 02:29 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 7, 2019 to Aug 14, 2026Model Insight
Volatility shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8359 | 7.72*** |
α ARCH Response to squared shocks | 0.2168 | 12.48*** |
β GARCH Volatility persistence | 0.6692 | 65.84*** |
Persistence:
0.886
Half-life:
6 days
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