V-Lab
Xior Student Housing NV Asy. Power MEM Volatility Analysis
Volatility prediction for Thursday, October 1st, 2026
1 Day
17.87%
1 Week
16.84%
1 Month
14.70%
Analysis last updated: Thursday, October 1, 2026 at 06:15 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 11, 2015 to Sep 25, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days. The volatility power δ = 0.50 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APMEM Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0849 | 4.41*** |
| αARCH | 0.2525 | 10.11*** |
| βGARCH | 0.6960 | 18.85*** |
| γleverage | -0.0536 | -1.33 |
| δpower | 0.5000 | 4.72*** |
0.904
Persistence7d
Half-lifeAPMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0849 | 4.41*** |
α ARCH Response to squared shocks | 0.2525 | 10.11*** |
β GARCH Volatility persistence | 0.6960 | 18.85*** |
γ leverage Additional response to negative shocks | -0.0536 | -1.33 |
δ power Transformation power | 0.5000 | 4.72*** |
Persistence:
0.904
Half-life:
7 days
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