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, Q1 2026
Institutional positions in TransMedics Group, Inc. as of Mar 31, 2026. 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
- 416
- −3 vs. Q4 2025
- Shares held
- 36.5M
- +2.95M (+8.8%) vs. Q4 2025
- Total value
- $3.63B
- −$453.7M (−11.1%) vs. Q4 2025
- New holders
- 67
- 149 more added
- Sold out
- 70
- 137 more reduced
10 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Perigon Wealth Management, LLC | 20,954 | $2.08M | 0.04% | −371−1.7% | Reduced |
| Militia Capital Management LLC | 21,000 | $2.09M | 0.47% | +21,000 | New |
| Baird Financial Group, Inc. | 21,202 | $2.11M | 0.00% | +7,327+52.8% | Added |
| Regency Capital Management Inc. | 21,846 | $2.17M | 0.97% | +21,846 | New |
| Intech Investment Management LLC | 21,883 | $2.18M | 0.02% | +2,970+15.7% | Added |
| Panagora Asset Management Inc | 22,584 | $2.25M | 0.01% | −79,441−77.9% | Reduced |
| Thrivent Financial for Lutherans | 22,810 | $2.27M | 0.00% | −673−2.9% | Reduced |
| Bullseye Asset Management LLC | 24,061 | $2.39M | 1.39% | 00.0% | Unchanged |
| Emerald Investment Advisers, LLC | 25,042 | $2.49M | 0.22% | +25,042 | New |
| Algert Global LLC | 25,444 | $2.53M | 0.04% | −4,850−16.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 25,898 | $2.57M | 0.00% | −3,943−13.2% | Reduced |
| Royal Bank of Canada | 26,937 | $2.68M | 0.00% | −35,896−57.1% | Reduced |
| IMC-Chicago, LLC | 27,692 | $2.75M | 0.04% | +27,692 | New |
| New York State Teachers Retirement System | 29,430 | $2.93M | 0.01% | −73−0.2% | Reduced |
| Vanguard Asset Management, Ltd | 29,763 | $2.96M | 0.00% | +29,763 | New |
| Fred Alger Management, LLC | 30,005 | $2.98M | 0.01% | −264−0.9% | Reduced |
| State of Wisconsin Investment Board | 30,618 | $3.04M | 0.01% | −1,332−4.2% | Reduced |
| Geneos Wealth Management Inc. | 30,635 | $3.05M | 0.07% | +30,635 | New |
| Hussman Strategic Advisors, Inc. | 31,500 | $3.13M | 0.68% | +16,800+114.3% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 32,909 | $3.27M | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 33,102 | $3.29M | 0.01% | +33,102 | New |
| Gotham Asset Management, LLC | 37,820 | $3.76M | 0.01% | −3,052−7.5% | Reduced |
| California State Teachers Retirement System | 37,840 | $3.76M | 0.00% | +7,019+22.8% | Added |
| Nordea Investment Management AB | 38,830 | $3.78M | 0.00% | +6,838+21.4% | Added |
| LPL Financial LLC | 39,896 | $3.97M | 0.00% | +8,633+27.6% | Added |
| F/M Investments LLC | 40,086 | $3.98M | 0.26% | −25,453−38.8% | Reduced |
| Driehaus Capital Management LLC | 40,114 | $3.99M | 0.03% | −671,927−94.4% | Reduced |
| Tudor Investment Corp Et Al | 40,217 | $4.00M | 0.02% | +40,217 | New |
| Trillium Asset Management, LLC | 37,411 | $4.08M | 0.14% | +9,534+34.2% | Added |
| Beaconlight Capital, LLC | 42,478 | $4.22M | 2.38% | +13,134+44.8% | Added |
| Bessemer Group Inc | 45,821 | $4.55M | 0.01% | +12,812+38.8% | Added |
| King Luther Capital Management Corp | 47,084 | $4.68M | 0.02% | +27,084+135.4% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 47,275 | $4.70M | 0.01% | −45,171−48.9% | Reduced |
| Integrated Advisors Network LLC | 47,590 | $4.73M | 0.25% | +47,590 | New |
| Federated Hermes, Inc. | 51,386 | $5.11M | 0.01% | +4,085+8.6% | Added |
| Alliancebernstein L.P. | 42,764 | $5.20M | 0.00% | +622+1.5% | Added |
| Engineers Gate Manager LP | 52,625 | $5.23M | 0.07% | +38,852+282.1% | Added |
| First Trust Advisors LP | 53,889 | $5.36M | 0.00% | +28,404+111.5% | Added |
| Peregrine Capital Management LLC | 57,184 | $5.68M | 0.21% | −2,973−4.9% | Reduced |
| Biondo Investment Advisors, LLC | 57,970 | $5.76M | 0.74% | +755+1.3% | Added |
| Bastion Asset Management Inc. | 55,463 | $6.10M | 1.86% | −2,133−3.7% | Reduced |
| Citadel Advisors LLC | 61,601 | $6.12M | 0.00% | −81,646−57.0% | Reduced |
| Prudential Financial Inc | 61,630 | $6.13M | 0.01% | +4,525+7.9% | Added |
| American Century Companies Inc | 62,595 | $6.22M | 0.00% | +47,049+302.6% | Added |
| Swiss National Bank | 64,200 | $6.38M | 0.00% | +300+0.5% | Added |
| Lazard Asset Management LLC | 64,794 | $6.44M | 0.01% | +13,385+26.0% | Added |
| Longaeva Partners L.P. | 69,057 | $6.86M | 0.33% | +69,057 | New |
| Bank of Montreal | 69,366 | $6.90M | 0.00% | −54,820−44.1% | Reduced |
| SEI Investments Co | 69,629 | $6.92M | 0.01% | +14,338+25.9% | Added |
| Janus Henderson Group PLC | 73,488 | $7.31M | 0.00% | +1,537+2.1% | Added |
| Ensign Peak Advisors, Inc | 75,569 | $7.51M | 0.01% | −5,034−6.2% | Reduced |
| Nuveen, LLC | 78,419 | $7.80M | 0.00% | +3,256+4.3% | Added |
| Montanaro Asset Management Ltd | 78,739 | $7.83M | 2.34% | −23,200−22.8% | Reduced |
| Legal & General Group Plc | 78,753 | $7.83M | 0.00% | −7,115−8.3% | Reduced |
| Credit Agricole S A | 87,389 | $8.69M | 0.03% | +170+0.2% | Added |
| Rhumbline Advisers | 89,824 | $8.93M | 0.01% | +1,788+2.0% | Added |
| Lagoda Investment Management, L.P. | 90,530 | $9.00M | 5.55% | −14,270−13.6% | Reduced |
| Renaissance Group LLC | 93,543 | $9.30M | 0.39% | +16,314+21.1% | Added |
| Next Century Growth Investors LLC | 96,445 | $9.59M | 0.69% | −2,023−2.1% | Reduced |
| Brown Capital Management LLC | 97,954 | $9.74M | 1.38% | −47,964−32.9% | Reduced |
| Bellevue Group AG | 101,139 | $10.1M | 0.24% | +3,254+3.3% | Added |
| Ameriprise Financial Inc | 104,714 | $10.4M | 0.00% | −19,625−15.8% | Reduced |
| Trexquant Investment LP | 106,300 | $10.6M | 0.08% | +13,819+14.9% | Added |
| Raymond James Financial Inc | 115,035 | $11.1M | 0.00% | +2,503+2.2% | Added |
| Oppenheimer & Co Inc | 113,472 | $11.3M | 0.14% | −3,094−2.7% | Reduced |
| ExodusPoint Capital Management, LP | 115,345 | $11.5M | 0.11% | +115,345 | New |
| Envestnet Asset Management Inc | 116,546 | $11.6M | 0.00% | +73,359+169.9% | Added |
| Public Sector Pension Investment Board | 122,255 | $12.2M | 0.04% | +3,999+3.4% | Added |
| FirstWave Capital Management LLC | 124,268 | $12.4M | 13.18% | +49,706+66.7% | Added |
| Susquehanna International Group, LLP | 133,875 | $13.3M | 0.02% | +133,875 | New |
| BNP Paribas Arbitrage, SA | 144,529 | $14.4M | 0.01% | −65,000−31.0% | Reduced |
| Davidson Kempner Capital Management LP | 146,400 | $14.6M | 0.26% | 00.0% | Unchanged |
| Man Group plc | 158,409 | $15.7M | 0.03% | +62,745+65.6% | Added |
| Candriam Luxembourg S.C.A. | 158,766 | $15.8M | 0.08% | +49,580+45.4% | Added |
| ArrowMark Colorado Holdings LLC | 171,068 | $17.0M | 0.45% | −15,911−8.5% | Reduced |
| Blair William & Co | 174,017 | $17.3M | 0.05% | +38,128+28.1% | Added |
| Barclays PLC | 190,578 | $18.9M | 0.01% | −9,127−4.6% | Reduced |
| Deutsche Bank AG | 195,433 | $19.4M | 0.01% | +30,860+18.8% | Added |
| Bank of New York Mellon Corp | 211,368 | $21.0M | 0.00% | −7,228−3.3% | Reduced |
| Lord, Abbett & Co. LLC | 213,973 | $21.3M | 0.07% | −2,900−1.3% | Reduced |
| Emerald Mutual Fund Advisers Trust | 229,326 | $22.8M | 1.11% | −575−0.3% | Reduced |
| Principal Financial Group Inc | 231,433 | $23.0M | 0.01% | +37,656+19.4% | Added |
| Vanguard Fiduciary Trust Co | 236,394 | $23.5M | 0.01% | +236,394 | New |
| Royce & Associates LP | 244,382 | $24.3M | 0.24% | +1,233+0.5% | Added |
| Wells Fargo & Company | 273,801 | $27.2M | 0.01% | +15,251+5.9% | Added |
| Zevenbergen Capital Investments LLC | 286,521 | $28.5M | 0.82% | +6,343+2.3% | Added |
| JPMorgan Chase & Co | 308,341 | $29.1M | 0.00% | −66,920−17.8% | Reduced |
| Bank of America Corp | 295,176 | $29.3M | 0.00% | +15,873+5.7% | Added |
| Baillie Gifford & Co | 305,194 | $30.3M | 0.03% | −11,279−3.6% | Reduced |
| Millennium Management LLC | 306,080 | $30.4M | 0.02% | +157,049+105.4% | Added |
| Charles Schwab Investment Management Inc | 318,926 | $31.7M | 0.00% | −4,100−1.3% | Reduced |
| Frontier Capital Management Co LLC | 320,471 | $31.9M | 0.33% | +17,711+5.8% | Added |
| Two Sigma Investments, LP | 325,140 | $32.3M | 0.03% | −110,829−25.4% | Reduced |
| Braidwell LP | 329,391 | $32.7M | 1.09% | +14,050+4.5% | Added |
| Northern Trust Corp | 338,159 | $33.6M | 0.00% | −1,057−0.3% | Reduced |
| Emerald Advisers, LLC | 342,791 | $34.1M | 1.08% | −8,558−2.4% | Reduced |
| Wasatch Advisors Inc | 346,144 | $34.4M | 0.23% | +14,296+4.3% | Added |
| Price T Rowe Associates Inc | 346,683 | $34.5M | 0.00% | −223,287−39.2% | Reduced |
| Citigroup Inc | 357,381 | $35.5M | 0.02% | +285,337+396.1% | Added |
| Capital World Investors | 374,177 | $37.2M | 0.01% | +146,736+64.5% | Added |