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TransMedics Group, Inc.

TMDX
Exchange
Nasdaq
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0001756262

In the last 90 days, TransMedics Group, Inc. insiders filed 1 open-market purchase and 0 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $2.31B in total; no superinvestor holds it.

Q3 2021 vs. Q2 2021

How the institutions holding TransMedics Group, Inc. changed between Q2 2021 and Q3 2021.

All holders in Q3 2021All holders in Q2 2021

13F holders of TMDX: Q2 2021 compared with Q3 2021
MeasureQ2 2021Of which not filed for Q3 2021Q3 2021Change
Holders1241120−3
Shares18.8M5419.2M+428.4K (+2.3%)
Value$623.5M$2.00K$636.5M+$13.0M (+2.1%)

1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (21)

Institutions that held TransMedics Group, Inc. at the end of Q3 2021 but not at the end of Q2 2021.

Institutions new to TMDX in Q3 2021
InstitutionSharesValue% of portfolio
Silvercrest Asset Management Group LLC205,724$6.81M0.05%
Next Century Growth Investors LLC164,753$5.45M0.47%
Moody Aldrich Partners LLC133,869$4.43M0.56%
Calamos Advisors LLC118,141$3.91M0.02%
Russell Investments Group, Ltd.80,023$2.65M0.00%
Portolan Capital Management, LLC78,106$2.58M0.19%
HSBC Holdings PLC35,020$1.16M0.00%
Susquehanna Fundamental Investments, LLC24,311$804.0K0.01%
Glenmede Trust Co NA14,026$464.0K0.00%
Walleye Capital LLC12,454$412.0K0.01%
Jump Financial, LLC11,600$384.0K0.03%
SG Americas Securities, LLC9,408$311.0K0.00%
Quadrature Capital Ltd7,493$248.0K0.01%
Parametric Portfolio Associates LLC6,051$200.0K0.00%
Lazard Asset Management LLC1,133$37.0K0.00%
STRS Ohio500$16.0K0.00%
Koshinski Asset Management, Inc.400$13.2K0.00%
TCI Wealth Advisors, Inc.113$4.00K0.00%
Delta Asset Management LLC100$3.00K0.00%
Quadrant Capital Group LLC18$1.00K0.00%
First Horizon Advisors, Inc.20$00.00%

Sold out (24)

Institutions that held TransMedics Group, Inc. at the end of Q2 2021 and filed for Q3 2021 without it.

Not filed for Q3 2021 yet (1)

Institutions that held TransMedics Group, Inc. at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding TMDX in Q2 2021 that haven't filed for Q3 2021
InstitutionShares, Q2 2021Value, Q2 2021
CWM, LLC54$2.00K