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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of TransMedics Group, Inc. GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 2, 2019 to Jul 24, 2026
Boundary 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

ParameterValuet-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