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, Q3 2025
Institutional positions in TransMedics Group, Inc. as of Sep 30, 2025. 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
- 388
- +25 vs. Q2 2025
- Shares held
- 37.1M
- +406.6K (+1.1%) vs. Q2 2025
- Total value
- $4.17B
- −$753.0M (−15.3%) vs. Q2 2025
- New holders
- 75
- 152 more added
- Sold out
- 50
- 120 more reduced
5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 375 | $2.31B |
| Q1 2026 | 416 | $3.63B |
| Q4 2025 | 429 | $4.53B |
| Q3 2025 | 388 | $4.17B |
| Q2 2025 | 368 | $4.93B |
| Q1 2025 | 298 | $2.63B |
| Q4 2024 | 315 | $2.30B |
| Q3 2024 | 374 | $5.74B |
| Q2 2024 | 340 | $5.09B |
| Q1 2024 | 262 | $2.52B |
| Q4 2023 | 249 | $2.76B |
| Q3 2023 | 222 | $1.91B |
| Q2 2023 | 240 | $2.73B |
| Q1 2023 | 225 | $2.26B |
| Q4 2022 | 200 | $1.79B |
| Q3 2022 | 178 | $1.18B |
| Q2 2022 | 135 | $719.7M |
| Q1 2022 | 110 | $561.4M |
| Q4 2021 | 121 | $384.7M |
| Q3 2021 | 120 | $636.5M |
| Q2 2021 | 124 | $623.5M |
| Q1 2021 | 107 | $773.0M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| SEI Investments Co | 43,716 | $4.91M | 0.01% | +1,899+4.5% | Added |
| Beaconlight Capital, LLC | 44,218 | $4.96M | 2.45% | +22,694+105.4% | Added |
| Bastion Asset Management Inc. | 44,887 | $5.13M | 2.96% | +44,887 | New |
| Prudential Financial Inc | 46,271 | $5.19M | 0.01% | +10,320+28.7% | Added |
| Envestnet Asset Management Inc | 47,048 | $5.28M | 0.00% | +20,750+78.9% | Added |
| Millennium Management LLC | 48,814 | $5.48M | 0.00% | −66,100−57.5% | Reduced |
| Balyasny Asset Management LLC | 54,305 | $6.09M | 0.01% | +27,448+102.2% | Added |
| Next Century Growth Investors LLC | 54,350 | $6.10M | 0.44% | −65,406−54.6% | Reduced |
| Lisanti Capital Growth, LLC | 56,901 | $6.38M | 1.56% | +21,771+62.0% | Added |
| F/M Investments LLC | 56,912 | $6.39M | 0.25% | +3,584+6.7% | Added |
| Blair William & Co | 57,443 | $6.45M | 0.02% | −11,044−16.1% | Reduced |
| Biondo Investment Advisors, LLC | 58,375 | $6.55M | 0.82% | −105−0.2% | Reduced |
| Swiss National Bank | 62,300 | $6.99M | 0.00% | +1,200+2.0% | Added |
| Credit Agricole S A | 63,615 | $7.14M | 0.02% | +63,615 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 65,345 | $7.33M | 0.01% | +3,768+6.1% | Added |
| Wolverine Trading, LLC | 65,578 | $7.39M | 0.15% | +21,985+50.4% | Added |
| Peregrine Capital Management LLC | 68,406 | $7.68M | 0.23% | +9,676+16.5% | Added |
| Portolan Capital Management, LLC | 68,910 | $7.73M | 0.42% | +68,910 | New |
| Lazard Asset Management LLC | 70,552 | $7.92M | 0.01% | +51,973+279.7% | Added |
| Ensign Peak Advisors, Inc | 74,631 | $8.37M | 0.01% | −23,150−23.7% | Reduced |
| Renaissance Group LLC | 76,078 | $8.54M | 0.32% | +76,078 | New |
| Panagora Asset Management Inc | 76,300 | $8.56M | 0.03% | +76,300 | New |
| Nuveen, LLC | 76,366 | $8.57M | 0.00% | −950−1.2% | Reduced |
| Citigroup Inc | 76,785 | $8.62M | 0.01% | +33,414+77.0% | Added |
| Jane Street Group, LLC | 78,156 | $8.77M | 0.01% | −123,017−61.1% | Reduced |
| Trexquant Investment LP | 80,401 | $9.02M | 0.09% | −30,764−27.7% | Reduced |
| Legal & General Group Plc | 88,160 | $9.89M | 0.00% | −4,364−4.7% | Reduced |
| Susquehanna International Group, LLP | 90,297 | $10.1M | 0.01% | +50,214+125.3% | Added |
| Rhumbline Advisers | 93,342 | $10.5M | 0.01% | +125+0.1% | Added |
| Bank of Montreal | 105,117 | $11.8M | 0.01% | −66,141−38.6% | Reduced |
| State of Michigan Retirement System | 108,000 | $12.1M | 0.06% | 00.0% | Unchanged |
| Lagoda Investment Management, L.P. | 108,060 | $12.1M | 6.86% | +3,625+3.5% | Added |
| Oppenheimer & Co Inc | 111,640 | $12.5M | 0.15% | −5,730−4.9% | Reduced |
| Raymond James Financial Inc | 112,980 | $12.7M | 0.00% | −78,369−41.0% | Reduced |
| Man Group plc | 113,556 | $12.7M | 0.02% | +88,914+360.8% | Added |
| Ameriprise Financial Inc | 114,790 | $12.9M | 0.00% | +12,699+12.4% | Added |
| Bellevue Group AG | 116,968 | $13.1M | 0.27% | −13,549−10.4% | Reduced |
| Citadel Advisors LLC | 124,917 | $14.0M | 0.01% | −31,524−20.2% | Reduced |
| Jump Financial, LLC | 127,032 | $14.3M | 0.18% | +105,232+482.7% | Added |
| Montanaro Asset Management Ltd | 130,586 | $14.7M | 3.66% | +4,650+3.7% | Added |
| Squarepoint Ops LLC | 132,504 | $14.9M | 0.03% | +125,197+1,713.4% | Added |
| Public Sector Pension Investment Board | 132,972 | $14.9M | 0.05% | +17,637+15.3% | Added |
| Lord, Abbett & Co. LLC | 133,414 | $15.0M | 0.04% | −7,271−5.2% | Reduced |
| Renaissance Technologies LLC | 145,199 | $16.3M | 0.02% | +145,199 | New |
| Davidson Kempner Capital Management LP | 146,400 | $16.4M | 0.23% | +42,600+41.0% | Added |
| Fred Alger Management, LLC | 150,741 | $16.9M | 0.07% | +113,408+303.8% | Added |
| Deutsche Bank AG | 172,623 | $19.4M | 0.01% | +39,623+29.8% | Added |
| Royal Bank of Canada | 198,442 | $22.3M | 0.00% | −102,227−34.0% | Reduced |
| Barclays PLC | 201,858 | $22.6M | 0.01% | +16,434+8.9% | Added |
| BNP Paribas Arbitrage, SA | 210,070 | $23.6M | 0.02% | +12,588+6.4% | Added |
| Bank of New York Mellon Corp | 211,797 | $23.8M | 0.00% | −9,479−4.3% | Reduced |
| Bank of America Corp | 215,975 | $24.2M | 0.00% | −1,433−0.7% | Reduced |
| Wellington Management Group LLP | 216,141 | $24.3M | 0.00% | −4,934−2.2% | Reduced |
| Frontier Capital Management Co LLC | 219,466 | $24.6M | 0.22% | +146,069+199.0% | Added |
| Wells Fargo & Company | 224,781 | $25.2M | 0.01% | +27,595+14.0% | Added |
| Capital World Investors | 227,441 | $25.5M | 0.00% | 00.0% | Unchanged |
| Emerald Mutual Fund Advisers Trust | 238,438 | $26.8M | 1.38% | −17,205−6.7% | Reduced |
| Principal Financial Group Inc | 242,039 | $27.2M | 0.01% | +53,995+28.7% | Added |
| Royce & Associates LP | 243,149 | $27.3M | 0.27% | −4,252−1.7% | Reduced |
| Zevenbergen Capital Investments LLC | 258,523 | $29.0M | 0.56% | +136,995+112.7% | Added |
| Baillie Gifford & Co | 260,719 | $29.3M | 0.02% | −2,242−0.9% | Reduced |
| ArrowMark Colorado Holdings LLC | 313,125 | $35.1M | 0.65% | +109,830+54.0% | Added |
| Brown Capital Management LLC | 313,855 | $35.2M | 1.45% | −137,516−30.5% | Reduced |
| Charles Schwab Investment Management Inc | 320,787 | $36.0M | 0.01% | +5,657+1.8% | Added |
| Wasatch Advisors Inc | 325,202 | $36.5M | 0.20% | −10,124−3.0% | Reduced |
| Northern Trust Corp | 347,469 | $39.0M | 0.00% | −5,261−1.5% | Reduced |
| Braidwell LP | 351,248 | $39.4M | 1.17% | +96,200+37.7% | Added |
| Invesco Ltd. | 385,804 | $43.3M | 0.01% | −90,882−19.1% | Reduced |
| Emerald Advisers, LLC | 387,588 | $43.5M | 1.39% | −51,741−11.8% | Reduced |
| JPMorgan Chase & Co | 392,356 | $44.0M | 0.00% | −71,885−15.5% | Reduced |
| Price T Rowe Associates Inc | 398,160 | $44.7M | 0.00% | +260,270+188.8% | Added |
| Two Sigma Advisers, LP | 423,300 | $47.5M | 0.10% | +147,900+53.7% | Added |
| Dimensional Fund Advisors LP | 450,993 | $50.6M | 0.01% | +75,948+20.3% | Added |
| Marshall Wace, LLP | 541,678 | $60.8M | 0.07% | −5,109−0.9% | Reduced |
| Eventide Asset Management, LLC | 547,296 | $61.4M | 1.01% | −590.0% | Reduced |
| Morgan Stanley | 547,819 | $61.5M | 0.00% | −184,989−25.2% | Reduced |
| Two Sigma Investments, LP | 635,394 | $71.3M | 0.11% | +223,409+54.2% | Added |
| Hood River Capital Management LLC | 678,437 | $76.1M | 0.90% | −1,410−0.2% | Reduced |
| Goldman Sachs Group Inc | 703,578 | $78.9M | 0.01% | +386,403+121.8% | Added |
| Driehaus Capital Management LLC | 738,158 | $82.8M | 0.59% | −115,881−13.6% | Reduced |
| Geode Capital Management, LLC | 813,571 | $91.3M | 0.01% | +8,921+1.1% | Added |
| UBS Group AG | 856,063 | $96.1M | 0.02% | +379,925+79.8% | Added |
| Macquarie Group Ltd | 906,268 | $101.7M | 0.12% | −45,837−4.8% | Reduced |
| UBS Asset Management Americas Inc | 1,069,492 | $120.0M | 0.03% | +113,817+11.9% | Added |
| State Street Corp | 1,279,541 | $143.6M | 0.00% | −9,469−0.7% | Reduced |
| Vanguard Group Inc | 3,605,607 | $404.5M | 0.01% | +9,650+0.3% | Added |
| FMR LLC | 5,064,370 | $568.2M | 0.03% | +40,630+0.8% | Added |
| BlackRock, Inc. | 5,331,598 | $598.2M | 0.01% | +107,952+2.1% | Added |
| FIL Ltd | 0 | $0 | 0.00% | −1,055,553−100.0% | Sold out |
| Liontrust Investment Partners LLP | 0 | $0 | 0.00% | −523,748−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −139,407−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −42,278−100.0% | Sold out |
| BCJ Capital Management, LLC | 0 | $0 | 0.00% | −29,255−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −26,130−100.0% | Sold out |
| EAM Global Investors LLC | 0 | $0 | 0.00% | −26,036−100.0% | Sold out |
| GF Fund Management Co. Ltd. | 0 | $0 | 0.00% | −21,894−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −18,090−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −13,373−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −11,231−100.0% | Sold out |
| Valmark Advisers, Inc. | 0 | $0 | 0.00% | −9,709−100.0% | Sold out |