V-Lab
TransMedics Group, Inc. GARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
62.17%
decreased by 2.16%
1 Week
66.25%
increased by 1.92%
1 Month
70.55%
increased by 6.22%
Analysis last updated: Tuesday, September 8, 2026 at 10:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 2, 2019 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days.
σ
GARCH Model
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Shock decay: Shocks decay with a 3-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 2.96*** |
| αARCH | 0.1685 | 2.43** |
| βGARCH | 0.5916 | 5.53*** |
0.760
Persistence3d
Half-lifeσ
GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 2.96*** |
α ARCH Response to squared shocks | 0.1685 | 2.43** |
β GARCH Volatility persistence | 0.5916 | 5.53*** |
Persistence:
0.760
Half-life:
3 days
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