V-Lab
Oxford Nanopore Technologies APARCH Volatility Analysis
Volatility prediction for Wednesday, August 19th, 2026
1 Day
64.62%
unchanged at 0.00%
1 Week
64.62%
unchanged at 0.00%
1 Month
64.62%
unchanged at 0.00%
Analysis last updated: Wednesday, August 19, 2026 at 06:33 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 4, 2021 to Aug 14, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 128 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
APARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0752 | 3.65*** |
α ARCH Response to squared shocks | 0.0000 | 0.01 |
β GARCH Volatility persistence | 0.9946 | 835.07*** |
γ leverage Additional response to negative shocks | 0.1995 | 0.00 |
δ power Transformation power | 1.8749 | 17.60*** |
Persistence:
0.995
Half-life:
128 days
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