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Compare · TMDX vs ZYXI

TMDX vs ZYXI

Side-by-side comparison of TransMedics Group Inc. (TMDX) and Zynex Inc. (ZYXI): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both TMDX and ZYXI operate in Biotechnology: Electromedical & Electrotherapeutic Apparatus (Health Care), so they compete in similar markets.
  • TMDX is the larger of the two at $2.57B, about 8.7x ZYXI ($296.3M).
  • Over the past year, TMDX is down 47.2% and ZYXI is down 93.9% - TMDX leads by 46.7 points.
  • TMDX has hit the wire 12 times in the past 4 weeks while ZYXI has been quiet.
  • TMDX has more recent analyst coverage (18 ratings vs 10 for ZYXI).
PerformanceTMDX-39.87%ZYXI-93.95%
2025-11-20+0.00%2026-06-09
MetricTMDXZYXI
Company
TransMedics Group Inc.
Zynex Inc.
Price
$74.36+4.47%
$0.13-31.48%
Market cap
$2.57B
$296.3M
1M return
+9.69%
-77.93%
1Y return
-47.21%
-93.95%
Industry
Biotechnology: Electromedical & Electrotherapeutic Apparatus
Biotechnology: Electromedical & Electrotherapeutic Apparatus
Exchange
NASDAQ
NASDAQ
IPO
2019
News (4w)
12
0
Recent ratings
18
10
TMDX

TransMedics Group Inc.

TransMedics Group, Inc., a commercial-stage medical technology company, engages in transforming organ transplant therapy for end-stage organ failure patients in the United States and internationally. The company offers Organ Care System (OCS), a portable organ perfusion, optimization, and monitoring system that utilizes its proprietary and customized technology to replicate near-physiologic conditions for donor organs outside of the human body. Its Organ Care System includes OCS LUNG, a portable perfusion, ventilation, and monitoring system that maintains the organ at a near-physiologic state allowing physicians to assess and improve the condition of lungs between the donor and recipient sites; OCS Heart, a portable, warm perfusion, and monitoring system designed to keep a donor heart at a human-like, metabolically active state; and OCS Liver, a system that is evaluated in clinical trials for utilized and unutilized donor livers. TransMedics Group, Inc. was founded in 1998 and is headquartered in Andover, Massachusetts.

ZYXI

Zynex Inc.

Zynex, Inc., through its subsidiaries, designs, manufactures, and markets medical devices to treat chronic and acute pain; and activate and exercise muscles for rehabilitative purposes with electrical stimulation. It offers NexWave, a dual channel, multi-modality interferential current, transcutaneous electrical nerve stimulation (TENS), and neuromuscular electrical stimulation (NMES) device; NeuroMove, an electromyography triggered electrical stimulation device; InWave, an electrical stimulation product for the treatment of female urinary incontinence; and E-Wave, an NMES device. The company also supplies electrodes for the delivery of electrical current to the body, and batteries for use in electrotherapy products; and distributes Comfortrac/Saunders for cervical traction, JetStream for hot/cold therapy, and LSO Back Braces for lumbar support. In addition, it offers CM-1500, a blood volume monitor device for monitoring central blood volume for use in operating and recovery rooms to detect blood loss during surgery and internal bleeding during recovery. The company provides its products for use in pain management and control; and stroke and spinal cord injury rehabilitation. Zynex, Inc. sells its products through direct sales force primarily in the United States. The company was founded in 1996 and is headquartered in Englewood, Colorado.

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