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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 2025 vs. Q2 2025

How the institutions holding TransMedics Group, Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of TMDX: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders3685388+25
Shares36.8M47.4K37.1M+406.6K (+1.1%)
Value$4.93B$6.34M$4.17B−$753.0M (−15.3%)

5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (75)

Institutions that held TransMedics Group, Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to TMDX in Q3 2025
InstitutionSharesValue% of portfolio
Renaissance Technologies LLC145,199$16.3M0.02%
Panagora Asset Management Inc76,300$8.56M0.03%
Renaissance Group LLC76,078$8.54M0.32%
Portolan Capital Management, LLC68,910$7.73M0.42%
Credit Agricole S A63,615$7.14M0.02%
Bastion Asset Management Inc.44,887$5.13M2.96%
Nordea Investment Management AB36,372$4.07M0.00%
Nomura Holdings Inc30,975$3.48M0.02%
Bridgewater Associates, LP30,085$3.38M0.01%
Schonfeld Strategic Advisors LLC26,335$2.95M0.02%
Zurich Insurance Group Ltd20,995$2.36M0.02%
King Luther Capital Management Corp20,000$2.24M0.01%
Kensington Investment Counsel, LLC17,165$1.93M0.78%
Fieldview Capital Management, LLC15,291$1.72M0.28%
Campbell & CO Investment Adviser LLC14,231$1.60M0.12%
Summit Financial, LLC13,300$1.49M0.02%
Deerfield Management Company, L.P. (Series C)12,752$1.43M0.02%
Shelton Wealth Management, LLC10,436$1.17M0.55%
Voloridge Investment Management, LLC6,649$746.0K0.00%
Virginia Retirement Systems Et Al6,600$740.5K0.00%
Bryce Point Capital, LLC6,131$687.9K0.84%
Federated Hermes, Inc.5,993$672.4K0.00%
Gsa Capital Partners LLP5,981$671.0K0.06%
Inspire Advisors, LLC5,378$603.4K0.06%
HRT Financial LP4,922$552.0K0.00%
Precision Wealth Strategies, LLC4,772$535.4K0.17%
Investment Research Partners LLC3,948$530.3K0.24%
Qsemble Capital Management, LP4,628$519.3K0.05%
Allspring Global Investments Holdings, LLC4,169$479.0K0.00%
Optimize Financial Inc4,063$455.9K0.24%
Alps Advisors Inc3,980$446.6K0.00%
Virtue Asset Management LLC3,878$435.1K0.36%
Quantbot Technologies LP3,863$433.4K0.01%
Aigen Investment Management, LP3,658$410.4K0.06%
CIBC Bancorp USA Inc.3,544$397.6K0.00%
Yorktown Management & Research Co Inc3,500$392.7K0.31%
Versor Investments LP3,160$354.6K0.07%
Summit Global Investments3,148$353.0K0.02%
Benjamin Edwards Inc2,986$335.0K0.00%
Headlands Technologies LLC2,981$334.5K0.03%
Dynamic Technology Lab Private Ltd2,931$329.0K0.06%
Keebeck Wealth Management, LLC2,835$318.1K0.04%
Inceptionr LLC2,552$286.3K0.07%
Truist Financial Corp2,455$275.5K0.00%
Advisory Services Network, LLC2,442$274.0K0.00%
Capstone Investment Advisors, LLC2,344$263.0K0.00%
Marex Group plc2,261$253.7K0.00%
Rockefeller Capital Management L.P.2,242$251.6K0.00%
Guidance Capital, Inc1,887$246.3K0.06%
O'Shaughnessy Asset Management, LLC2,172$243.7K0.00%
ZWJ Investment Counsel Inc2,100$235.6K0.01%
Moors & Cabot, Inc.1,866$209.4K0.01%
Walleye Trading LLC1,278$143.4K0.00%
Generali Investments, Management Co LLC1,209$135.7K0.03%
China Universal Asset Management Co., Ltd.1,000$112.2K0.01%
Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna667$74.8K0.03%
Johnson Financial Group, Inc.576$64.6K0.00%
Acadian Asset Management LLC471$52.0K0.00%
First Horizon Corp382$42.9K0.00%
Pilgrim Partners Asia Pte Ltd360$40.4K0.02%
FNY Investment Advisers, LLC305$34.0K0.01%
LOM Asset Management Ltd300$34.0K0.01%
Harvest Fund Management Co., Ltd255$29.0K0.00%
Salomon & Ludwin, LLC245$28.3K0.00%
Caitong International Asset Management Co., Ltd159$17.8K0.01%
Wealthspire Advisors, LLC87$9.76K0.00%
Golden State Wealth Management, LLC20$2.24K0.00%
JPL Wealth Management, LLC15$1.68K0.00%
High Note Wealth, LLC11$1.23K0.00%
Westfuller Advisors, LLC9$1.05K0.00%
TD Private Client Wealth LLC5$5610.00%
Root Financial Partners, LLC5$5610.00%
Tortoise Investment Management, LLC1$1120.00%
Cedar Mountain Advisors, LLC1$1120.00%
Hemington Wealth Management2$00.00%

Sold out (50)

Institutions that held TransMedics Group, Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of TMDX in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
FIL Ltd1,055,553$141.5M
Liontrust Investment Partners LLP523,748$70.2M
ExodusPoint Capital Management, LP139,407$18.7M
Twinbeech Capital LP42,278$5.67M
BCJ Capital Management, LLC29,255$3.92M
Capital Fund Management S.A.26,130$3.50M
EAM Global Investors LLC26,036$3.49M
GF Fund Management Co. Ltd.21,894$2.93M
Penserra Capital Management LLC18,090$2.42M
Winton Group Ltd13,373$1.79M
Semanteon Capital Management, LP11,231$1.51M
Valmark Advisers, Inc.9,709$1.30M
Options Solutions, LLC7,072$947.7K
Centiva Capital, LP5,627$754.1K
Two Sigma Securities, LLC5,257$704.5K
Advisors Preferred, LLC4,748$617.7K
Private Advisor Group, LLC3,725$499.2K
Wedbush Securities Inc3,428$459.0K
HSBC Holdings PLC3,231$432.4K
Jain Global LLC3,200$428.8K
Sanctuary Advisors, LLC3,103$415.8K
Silver Oak Securities, Inc2,828$379.0K
Mach-1 Financial Group, Inc.2,502$335.3K
Scientech Research LLC2,364$316.8K
Global Assets Advisory, LLC2,350$305.7K
Vontobel Holding Ltd.2,100$281.4K
Caxton Associates LLP1,808$242.3K
Fiduciary Alliance LLC1,807$242.2K
Integrated Wealth Concepts LLC1,770$237.2K
49 Wealth Management, LLC1,757$235.5K
Profund Advisors LLC1,672$224.1K
Merit Financial Group, LLC1,662$222.7K
Atria Investments LLC1,592$213.3K
Walleye Capital LLC1,564$209.6K
Meridian Wealth Management, LLC1,502$201.3K
Truefg, LLC1,500$201.0K
Americana Partners, LLC1,500$201.0K
CoreCap Advisors, LLC375$50.3K
Mount Yale Investment Advisors, LLC360$48.2K
Opal Wealth Advisors, LLC191$25.6K
Skopos Labs, Inc.183$24.5K
Twin Peaks Wealth Advisors, LLC90$11.8K
Indiana Trust & Investment Management CO80$10.7K
GeoWealth Management, LLC4$536
Whipplewood Advisors, LLC4$536
UMA Financial Services, Inc.3$403
NewSquare Capital LLC3$402
Stephens Consulting, LLC1$135
Bryn Mawr Trust Co1$134
Sierra Ocean, LLC1$134

Not filed for Q3 2025 yet (5)

Institutions that held TransMedics Group, Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding TMDX in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank40,274$5.40M
CIBC World Markets Corp4,097$549.0K
Atria Wealth Solutions, Inc.2,442$315.6K
Atlas Capital Advisors LLC500$67.0K
First Horizon Advisors, Inc.115$15.4K