Stock Price Trends

TransMedics Group Inc (TMDX)

TransMedics Group, Inc., a commercial-stage medical technology company, is dedicated to transforming organ transplant therapy for patients with end-stage organ failure in the United States and internationally. The company is headquartered in Andover, Massachusetts.

Stock Price Trends

Stock price trends estimated using linear regression.

Key facts

  • The primary trend is increasing.
  • The growth rate of the primary trend is 24.80% per annum.
  • TMDX price at the close of March 20, 2026 was $113.90 and was inside the primary price channel.
  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 89.38% per annum.
  • TMDX price at the close of March 20, 2026 was lower than the bottom border of the secondary price channel by $1.82 (1.57%). This indicates a possible reversal in the secondary trend direction.

Linear Regression Model

Model equation:
Yi = α + β × Xi + εi

Top border of price channel:
Exp(Yi) = Exp(a + b × Xi + 2 × s)

Bottom border of price channel:
Exp(Yi) = Exp(a + b × Xi – 2 × s)

where:

i - observation number
Yi - natural logarithm of TMDX price
Xi - time index, 1 day interval
σ - standard deviation of εi
a - estimator of α
b - estimator of β
s - estimator of σ
Exp() - calculates the exponent of e


Primary Trend

Start date: November 4, 2022
End date: March 20, 2026

a = 3.7805

b = 0.0006

s = 0.2667

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0006) – 1
= 24.80%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.2667) – 1
= 190.57%

November 4, 2022 calculations

Top border of price channel:

Exp(Y411)
= Exp(a + b × X411 + 2 × s)
= Exp(a + b × 592 + 2 × s)
= Exp(3.7805 + 0.0006 × 592 + 2 × 0.2667)
= Exp(4.6731)
= $107.03

Bottom border of price channel:

Exp(Y411)
= Exp(a + b × X411 – 2 × s)
= Exp(a + b × 592 – 2 × s)
= Exp(3.7805 + 0.0006 × 592 – 2 × 0.2667)
= Exp(3.6064)
= $36.83

March 20, 2026 calculations

Top border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(3.7805 + 0.0006 × 1,824 + 2 × 0.2667)
= Exp(5.4208)
= $226.06

Bottom border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(3.7805 + 0.0006 × 1,824 – 2 × 0.2667)
= Exp(4.3541)
= $77.80

Description

  • The primary trend is increasing.
  • The growth rate of the primary trend is 24.80% per annum.
  • TMDX price at the close of March 20, 2026 was $113.90 and was inside the primary price channel.

Secondary Trend

Start date: December 3, 2024
End date: March 20, 2026

a = 1.8647

b = 0.0017

s = 0.1523

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0017) – 1
= 89.38%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.1523) – 1
= 83.89%

December 3, 2024 calculations

Top border of price channel:

Exp(Y932)
= Exp(a + b × X932 + 2 × s)
= Exp(a + b × 1,352 + 2 × s)
= Exp(1.8647 + 0.0017 × 1,352 + 2 × 0.1523)
= Exp(4.5346)
= $93.18

Bottom border of price channel:

Exp(Y932)
= Exp(a + b × X932 – 2 × s)
= Exp(a + b × 1,352 – 2 × s)
= Exp(1.8647 + 0.0017 × 1,352 – 2 × 0.1523)
= Exp(3.9254)
= $50.67

March 20, 2026 calculations

Top border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(1.8647 + 0.0017 × 1,824 + 2 × 0.1523)
= Exp(5.3603)
= $212.80

Bottom border of price channel:

Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(1.8647 + 0.0017 × 1,824 – 2 × 0.1523)
= Exp(4.7512)
= $115.72

Description

  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 89.38% per annum.
  • TMDX price at the close of March 20, 2026 was lower than the bottom border of the secondary price channel by $1.82 (1.57%). This indicates a possible reversal in the secondary trend direction.