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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.

13F holders, Q4 2024

Institutional positions in TransMedics Group, Inc. as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
315
−51 vs. Q3 2024
Shares held
36.9M
+417.8K (+1.1%) vs. Q3 2024
Total value
$2.30B
−$3.42B (−59.8%) vs. Q3 2024
New holders
74
131 more added
Sold out
125
84 more reduced

8 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting TMDX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2024: 315 institutions
Q1 2021: 107 institutionsQ2 2021: 124 institutionsQ3 2021: 120 institutionsQ4 2021: 121 institutionsQ1 2022: 110 institutionsQ2 2022: 135 institutionsQ3 2022: 178 institutionsQ4 2022: 200 institutionsQ1 2023: 225 institutionsQ2 2023: 240 institutionsQ3 2023: 222 institutionsQ4 2023: 249 institutionsQ1 2024: 262 institutionsQ2 2024: 340 institutionsQ3 2024: 374 institutionsQ4 2024: 315 institutionsQ1 2025: 298 institutionsQ2 2025: 368 institutionsQ3 2025: 388 institutionsQ4 2025: 429 institutionsQ1 2026: 416 institutionsQ2 2026: 375 institutions
Value heldQ4 2024: $2.30B
Q1 2021: $773.0MQ2 2021: $623.5MQ3 2021: $636.5MQ4 2021: $384.7MQ1 2022: $561.4MQ2 2022: $719.7MQ3 2022: $1.18BQ4 2022: $1.79BQ1 2023: $2.26BQ2 2023: $2.73BQ3 2023: $1.91BQ4 2023: $2.76BQ1 2024: $2.52BQ2 2024: $5.09BQ3 2024: $5.74BQ4 2024: $2.30BQ1 2025: $2.63BQ2 2025: $4.93BQ3 2025: $4.17BQ4 2025: $4.53BQ1 2026: $3.63BQ2 2026: $2.31B
Institutions holding TMDX and their total value by quarter
QuarterHoldersValue
Q2 2026375$2.31B
Q1 2026416$3.63B
Q4 2025429$4.53B
Q3 2025388$4.17B
Q2 2025368$4.93B
Q1 2025298$2.63B
Q4 2024315$2.30B
Q3 2024374$5.74B
Q2 2024340$5.09B
Q1 2024262$2.52B
Q4 2023249$2.76B
Q3 2023222$1.91B
Q2 2023240$2.73B
Q1 2023225$2.26B
Q4 2022200$1.79B
Q3 2022178$1.18B
Q2 2022135$719.7M
Q1 2022110$561.4M
Q4 2021121$384.7M
Q3 2021120$636.5M
Q2 2021124$623.5M
Q1 2021107$773.0M

Institutions, Q4 2024

Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q3 2024.

Institutions holding TMDX in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Executive Wealth Management, LLC20,422$1.27M0.10%+7,424+57.1%Added
Dana Investment Advisors, Inc.22,407$1.40M0.05%+8,009+55.6%Added
GF Fund Management Co. Ltd.23,035$1.44M0.03%+23,035New
Comerica Bank23,880$1.49M0.01%−195−0.8%Reduced
Taylor Frigon Capital Management LLC24,618$1.53M0.78%+24,618New
GWM Advisors LLC24,635$1.54M0.01%+11,406+86.2%Added
State of New Jersey Common Pension Fund D25,316$1.58M0.01%+12,387+95.8%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.23,109$1.60M0.00%+23,000+21,100.9%Added
Thrivent Financial for Lutherans25,942$1.62M0.00%−254−1.0%Reduced
LPL Financial LLC26,386$1.65M0.00%+5,223+24.7%Added
Intech Investment Management LLC27,135$1.69M0.02%+13,334+96.6%Added
Magnetar Financial LLC27,860$1.74M0.04%+27,860New
Simplex Trading, LLC28,146$1.75M0.05%+25,563+989.7%Added
FORA Capital, LLC28,675$1.79M0.20%+28,675New
DnB Asset Management AS30,215$1.88M0.01%+25,834+589.7%Added
Renaissance Group LLC30,596$1.91M0.08%+30,596New
Graham Capital Management, L.P.30,956$1.93M0.06%+26,596+610.0%Added
Centiva Capital, LP31,087$1.94M0.07%+18,943+156.0%Added
California State Teachers Retirement System31,156$1.94M0.00%+61+0.2%Added
Trillium Asset Management, LLC32,947$2.05M0.05%+9,718+41.8%Added
Wolverine Trading, LLC37,119$2.20M0.05%+29,099+362.8%Added
Rhenman & Partners Asset Management AB38,000$2.37M0.24%−7,270−16.1%Reduced
Bastion Asset Management Inc.38,336$2.40M1.59%+38,336New
Pilgrim Partners Asia Pte Ltd40,000$2.49M2.17%+40,000New
California Public Employees Retirement System40,302$2.51M0.00%−14,145−26.0%Reduced
Alliancebernstein L.P.40,572$2.53M0.00%+500+1.2%Added
IMC-Chicago, LLC41,016$2.56M0.07%+41,016New
First Trust Advisors LP42,106$2.63M0.00%−17,602−29.5%Reduced
Aquatic Capital Management LLC43,149$2.69M0.07%+2,149+5.2%Added
Prudential Financial Inc34,056$2.74M0.00%+31,024+1,023.2%Added
Citigroup Inc45,801$2.86M0.00%+3,725+8.9%Added
Lazard Asset Management LLC45,996$2.87M0.00%+12,583+37.7%Added
Bullseye Asset Management LLC47,754$2.98M1.40%+11,553+31.9%Added
Qube Research & Technologies Ltd47,859$2.98M0.00%−3,395−6.6%Reduced
Quantitative Investment Management, LLC49,800$3.10M0.23%+49,800New
Vestal Point Capital, LP50,000$3.12M0.18%+50,000New
F/M Investments LLC50,888$3.17M0.12%−21,574−29.8%Reduced
Jane Street Group, LLC51,826$3.23M0.01%−47,238−47.7%Reduced
Biondo Investment Advisors, LLC53,450$3.33M0.46%−1,625−3.0%Reduced
Raymond James Financial Inc61,671$3.85M0.00%+61,671New
Natixis Advisors, L.P.62,687$3.91M0.01%−15,386−19.7%Reduced
Oppenheimer & Co Inc63,424$3.95M0.06%+18,531+41.3%Added
Swiss National Bank65,600$4.09M0.00%+1,400+2.2%Added
Peregrine Capital Management LLC66,140$4.12M0.12%+25,814+64.0%Added
Universal- Beteiligungs- und Servicegesellschaft mbH66,251$4.13M0.01%+66,251New
New York State Common Retirement Fund72,315$4.51M0.01%−28,440−28.2%Reduced
Lagoda Investment Management, L.P.73,860$4.61M2.49%+10,555+16.7%Added
Handelsbanken Fonder AB81,900$5.11M0.02%+17,500+27.2%Added
Bank of Montreal82,457$5.14M0.00%+12,484+17.8%Added
Public Sector Pension Investment Board83,586$5.21M0.02%+13,020+18.5%Added
Envestnet Asset Management Inc84,372$5.26M0.00%−5,911−6.5%Reduced
Nuveen Asset Management, LLC87,133$5.43M0.00%−98,195−53.0%Reduced
HSBC Holdings PLC87,498$5.45M0.00%+53,970+161.0%Added
Rhumbline Advisers90,061$5.62M0.01%+23,742+35.8%Added
Legal & General Group Plc95,539$5.96M0.00%+5,582+6.2%Added
Ameriprise Financial Inc97,885$6.10M0.00%−24,717−20.2%Reduced
State of Michigan Retirement System108,000$6.73M0.04%+108,000New
Segall Bryant & Hamill, LLC111,121$6.93M0.10%−1,496−1.3%Reduced
Ensign Peak Advisors, Inc114,786$7.16M0.01%−34,313−23.0%Reduced
Bank of America Corp121,947$7.60M0.00%−259,122−68.0%Reduced
Capital Fund Management S.A.125,880$7.85M0.08%+125,880New
First Light Asset Management, LLC139,757$8.71M0.83%−125,977−47.4%Reduced
Montanaro Asset Management Ltd140,035$8.73M1.80%+22,800+19.4%Added
Frontier Capital Management Co LLC151,010$9.42M0.09%+151,010New
Divisadero Street Capital Management, LP158,480$9.88M1.24%+120,090+312.8%Added
Palisades Investment Partners, LLC160,108$9.98M4.21%+11,323+7.6%Added
Cubist Systematic Strategies, LLC164,065$10.2M0.17%+164,065New
Wellington Management Group LLP164,431$10.3M0.00%−139,337−45.9%Reduced
Millennium Management LLC164,925$10.3M0.01%+53,088+47.5%Added
Wells Fargo & Company169,478$10.6M0.00%+36,722+27.7%Added
Deutsche Bank AG174,824$10.9M0.00%+6,812+4.1%Added
Sandhill Capital Partners LLC178,010$11.1M0.87%−214,551−54.7%Reduced
Blair William & Co180,564$11.3M0.03%+44,610+32.8%Added
Squarepoint Ops LLC182,814$11.4M0.03%−43,846−19.3%Reduced
Avidity Partners Management LP192,400$12.0M1.20%+164,800+597.1%Added
Bellevue Group AG192,718$12.0M0.23%+22,874+13.5%Added
Principal Financial Group Inc192,947$12.0M0.01%−9,340−4.6%Reduced
Emerald Mutual Fund Advisers Trust219,275$13.7M0.83%+94,034+75.1%Added
Susquehanna International Group, LLP220,604$13.8M0.02%+209,152+1,826.3%Added
Barclays PLC226,403$14.1M0.01%+35,603+18.7%Added
Citadel Advisors LLC232,934$14.5M0.01%+232,934New
JPMorgan Chase & Co256,826$16.0M0.00%+56,398+28.1%Added
Price T Rowe Associates Inc258,645$16.1M0.00%−34,821−11.9%Reduced
Schroder Investment Management Group283,107$16.8M0.02%+153,688+118.8%Added
Dimensional Fund Advisors LP269,825$16.8M0.00%+253,624+1,565.5%Added
Baillie Gifford & Co269,836$16.8M0.01%+34,947+14.9%Added
ArrowMark Colorado Holdings LLC277,420$17.3M0.23%−695,983−71.5%Reduced
Voloridge Investment Management, LLC294,548$18.4M0.06%−20,471−6.5%Reduced
Royce & Associates LP297,198$18.5M0.17%00.0%Unchanged
Charles Schwab Investment Management Inc297,433$18.5M0.00%+25,739+9.5%Added
Bank of New York Mellon Corp353,262$22.0M0.00%−131,656−27.2%Reduced
Northern Trust Corp354,622$22.1M0.00%+40,093+12.7%Added
Vaughan Nelson Investment Management, L.P.361,615$22.5M0.21%+32,605+9.9%Added
Norges Bank366,661$22.9M0.00%+8,581+2.4%Added
Emerald Advisers, LLC371,711$23.2M0.90%+220,804+146.3%Added
Man Group plc395,447$24.7M0.08%+50,127+14.5%Added
Goldman Sachs Group Inc420,789$26.2M0.01%−119,065−22.1%Reduced
Wasatch Advisors Inc441,354$27.5M0.14%+200,603+83.3%Added
Morgan Stanley454,438$28.3M0.00%−68,467−13.1%Reduced
UBS Group AG590,242$36.8M0.01%+530,990+896.2%Added