V-Lab
TransMedics Group, Inc. GJR-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
60.10%
decreased by 2.17%
1 Week
65.60%
increased by 3.33%
1 Month
71.53%
increased by 9.26%
Analysis last updated: Friday, July 24, 2026 at 10:09 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 2, 2019 to Jul 24, 2026Boundary Parameters
Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 159% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 10.33*** |
α ARCH Response to squared shocks | 0.1008 | 6.83*** |
β GARCH Volatility persistence | 0.5904 | 18.94*** |
γ leverage Additional response to negative shocks | 0.1602 | 3.90*** |
Persistence:
0.771
Half-life:
3 days
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