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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 5,293,331 | $526.2M | 0.01% | −101,901−1.9% | Reduced |
| FMR LLC | 5,096,243 | $506.6M | 0.03% | +19,207+0.4% | Added |
| Vanguard Portfolio Management LLC | 1,919,535 | $190.8M | 0.01% | +1,919,535 | New |
| Vanguard Capital Management LLC | 1,478,152 | $146.9M | 0.00% | +1,478,152 | New |
| State Street Corp | 1,319,479 | $131.2M | 0.00% | +44,346+3.5% | Added |
| Invesco Ltd. | 1,037,974 | $103.2M | 0.01% | +353,400+51.6% | Added |
| UBS Asset Management Americas Inc | 939,523 | $93.4M | 0.02% | −57,355−5.8% | Reduced |
| Nomura Asset Management International Inc. | 885,841 | $88.1M | 0.15% | +53,600+6.4% | Added |
| Goldman Sachs Group Inc | 866,282 | $86.1M | 0.01% | −99,649−10.3% | Reduced |
| Geode Capital Management, LLC | 839,155 | $83.4M | 0.01% | +22,681+2.8% | Added |
| Hood River Capital Management LLC | 699,770 | $69.6M | 0.70% | +9,413+1.4% | Added |
| Morgan Stanley | 694,150 | $69.0M | 0.00% | +26,389+4.0% | Added |
| UBS Group AG | 580,793 | $57.7M | 0.01% | −78,503−11.9% | Reduced |
| Eventide Asset Management, LLC | 548,824 | $54.5M | 0.90% | +557+0.1% | Added |
| Dimensional Fund Advisors LP | 516,679 | $51.4M | 0.01% | +26,969+5.5% | Added |
| Wellington Management Group LLP | 486,473 | $48.4M | 0.01% | +53,152+12.3% | Added |
| Capital World Investors | 374,177 | $37.2M | 0.01% | +146,736+64.5% | Added |
| Citigroup Inc | 357,381 | $35.5M | 0.02% | +285,337+396.1% | Added |
| Price T Rowe Associates Inc | 346,683 | $34.5M | 0.00% | −223,287−39.2% | Reduced |
| Wasatch Advisors Inc | 346,144 | $34.4M | 0.23% | +14,296+4.3% | Added |
| Emerald Advisers, LLC | 342,791 | $34.1M | 1.08% | −8,558−2.4% | Reduced |
| Northern Trust Corp | 338,159 | $33.6M | 0.00% | −1,057−0.3% | Reduced |
| Braidwell LP | 329,391 | $32.7M | 1.09% | +14,050+4.5% | Added |
| Two Sigma Investments, LP | 325,140 | $32.3M | 0.03% | −110,829−25.4% | Reduced |
| Frontier Capital Management Co LLC | 320,471 | $31.9M | 0.33% | +17,711+5.8% | Added |
| Charles Schwab Investment Management Inc | 318,926 | $31.7M | 0.00% | −4,100−1.3% | Reduced |
| Millennium Management LLC | 306,080 | $30.4M | 0.02% | +157,049+105.4% | Added |
| Baillie Gifford & Co | 305,194 | $30.3M | 0.03% | −11,279−3.6% | Reduced |
| Bank of America Corp | 295,176 | $29.3M | 0.00% | +15,873+5.7% | Added |
| JPMorgan Chase & Co | 308,341 | $29.1M | 0.00% | −66,920−17.8% | Reduced |
| Zevenbergen Capital Investments LLC | 286,521 | $28.5M | 0.82% | +6,343+2.3% | Added |
| Wells Fargo & Company | 273,801 | $27.2M | 0.01% | +15,251+5.9% | Added |
| Royce & Associates LP | 244,382 | $24.3M | 0.24% | +1,233+0.5% | Added |
| Vanguard Fiduciary Trust Co | 236,394 | $23.5M | 0.01% | +236,394 | New |
| Principal Financial Group Inc | 231,433 | $23.0M | 0.01% | +37,656+19.4% | Added |
| Emerald Mutual Fund Advisers Trust | 229,326 | $22.8M | 1.11% | −575−0.3% | Reduced |
| Lord, Abbett & Co. LLC | 213,973 | $21.3M | 0.07% | −2,900−1.3% | Reduced |
| Bank of New York Mellon Corp | 211,368 | $21.0M | 0.00% | −7,228−3.3% | Reduced |
| Deutsche Bank AG | 195,433 | $19.4M | 0.01% | +30,860+18.8% | Added |
| Barclays PLC | 190,578 | $18.9M | 0.01% | −9,127−4.6% | Reduced |
| Blair William & Co | 174,017 | $17.3M | 0.05% | +38,128+28.1% | Added |
| ArrowMark Colorado Holdings LLC | 171,068 | $17.0M | 0.45% | −15,911−8.5% | Reduced |
| Candriam Luxembourg S.C.A. | 158,766 | $15.8M | 0.08% | +49,580+45.4% | Added |
| Man Group plc | 158,409 | $15.7M | 0.03% | +62,745+65.6% | Added |
| Davidson Kempner Capital Management LP | 146,400 | $14.6M | 0.26% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 144,529 | $14.4M | 0.01% | −65,000−31.0% | Reduced |
| Susquehanna International Group, LLP | 133,875 | $13.3M | 0.02% | +133,875 | New |
| FirstWave Capital Management LLC | 124,268 | $12.4M | 13.18% | +49,706+66.7% | Added |
| Public Sector Pension Investment Board | 122,255 | $12.2M | 0.04% | +3,999+3.4% | Added |
| Envestnet Asset Management Inc | 116,546 | $11.6M | 0.00% | +73,359+169.9% | Added |
| ExodusPoint Capital Management, LP | 115,345 | $11.5M | 0.11% | +115,345 | New |
| Oppenheimer & Co Inc | 113,472 | $11.3M | 0.14% | −3,094−2.7% | Reduced |
| Raymond James Financial Inc | 115,035 | $11.1M | 0.00% | +2,503+2.2% | Added |
| Trexquant Investment LP | 106,300 | $10.6M | 0.08% | +13,819+14.9% | Added |
| Ameriprise Financial Inc | 104,714 | $10.4M | 0.00% | −19,625−15.8% | Reduced |
| Bellevue Group AG | 101,139 | $10.1M | 0.24% | +3,254+3.3% | Added |
| Brown Capital Management LLC | 97,954 | $9.74M | 1.38% | −47,964−32.9% | Reduced |
| Next Century Growth Investors LLC | 96,445 | $9.59M | 0.69% | −2,023−2.1% | Reduced |
| Renaissance Group LLC | 93,543 | $9.30M | 0.39% | +16,314+21.1% | Added |
| Lagoda Investment Management, L.P. | 90,530 | $9.00M | 5.55% | −14,270−13.6% | Reduced |
| Rhumbline Advisers | 89,824 | $8.93M | 0.01% | +1,788+2.0% | Added |
| Credit Agricole S A | 87,389 | $8.69M | 0.03% | +170+0.2% | Added |
| Legal & General Group Plc | 78,753 | $7.83M | 0.00% | −7,115−8.3% | Reduced |
| Montanaro Asset Management Ltd | 78,739 | $7.83M | 2.34% | −23,200−22.8% | Reduced |
| Nuveen, LLC | 78,419 | $7.80M | 0.00% | +3,256+4.3% | Added |
| Ensign Peak Advisors, Inc | 75,569 | $7.51M | 0.01% | −5,034−6.2% | Reduced |
| Janus Henderson Group PLC | 73,488 | $7.31M | 0.00% | +1,537+2.1% | Added |
| SEI Investments Co | 69,629 | $6.92M | 0.01% | +14,338+25.9% | Added |
| Bank of Montreal | 69,366 | $6.90M | 0.00% | −54,820−44.1% | Reduced |
| Longaeva Partners L.P. | 69,057 | $6.86M | 0.33% | +69,057 | New |
| Lazard Asset Management LLC | 64,794 | $6.44M | 0.01% | +13,385+26.0% | Added |
| Swiss National Bank | 64,200 | $6.38M | 0.00% | +300+0.5% | Added |
| American Century Companies Inc | 62,595 | $6.22M | 0.00% | +47,049+302.6% | Added |
| Prudential Financial Inc | 61,630 | $6.13M | 0.01% | +4,525+7.9% | Added |
| Citadel Advisors LLC | 61,601 | $6.12M | 0.00% | −81,646−57.0% | Reduced |
| Bastion Asset Management Inc. | 55,463 | $6.10M | 1.86% | −2,133−3.7% | Reduced |
| Biondo Investment Advisors, LLC | 57,970 | $5.76M | 0.74% | +755+1.3% | Added |
| Peregrine Capital Management LLC | 57,184 | $5.68M | 0.21% | −2,973−4.9% | Reduced |
| First Trust Advisors LP | 53,889 | $5.36M | 0.00% | +28,404+111.5% | Added |
| Engineers Gate Manager LP | 52,625 | $5.23M | 0.07% | +38,852+282.1% | Added |
| Alliancebernstein L.P. | 42,764 | $5.20M | 0.00% | +622+1.5% | Added |
| Federated Hermes, Inc. | 51,386 | $5.11M | 0.01% | +4,085+8.6% | Added |
| Integrated Advisors Network LLC | 47,590 | $4.73M | 0.25% | +47,590 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 47,275 | $4.70M | 0.01% | −45,171−48.9% | Reduced |
| King Luther Capital Management Corp | 47,084 | $4.68M | 0.02% | +27,084+135.4% | Added |
| Bessemer Group Inc | 45,821 | $4.55M | 0.01% | +12,812+38.8% | Added |
| Beaconlight Capital, LLC | 42,478 | $4.22M | 2.38% | +13,134+44.8% | Added |
| Trillium Asset Management, LLC | 37,411 | $4.08M | 0.14% | +9,534+34.2% | Added |
| Tudor Investment Corp Et Al | 40,217 | $4.00M | 0.02% | +40,217 | New |
| Driehaus Capital Management LLC | 40,114 | $3.99M | 0.03% | −671,927−94.4% | Reduced |
| F/M Investments LLC | 40,086 | $3.98M | 0.26% | −25,453−38.8% | Reduced |
| LPL Financial LLC | 39,896 | $3.97M | 0.00% | +8,633+27.6% | Added |
| Nordea Investment Management AB | 38,830 | $3.78M | 0.00% | +6,838+21.4% | Added |
| California State Teachers Retirement System | 37,840 | $3.76M | 0.00% | +7,019+22.8% | Added |
| Gotham Asset Management, LLC | 37,820 | $3.76M | 0.01% | −3,052−7.5% | Reduced |
| HRT Financial LP | 33,102 | $3.29M | 0.01% | +33,102 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 32,909 | $3.27M | 0.00% | 00.0% | Unchanged |
| Hussman Strategic Advisors, Inc. | 31,500 | $3.13M | 0.68% | +16,800+114.3% | Added |
| Geneos Wealth Management Inc. | 30,635 | $3.05M | 0.07% | +30,635 | New |
| State of Wisconsin Investment Board | 30,618 | $3.04M | 0.01% | −1,332−4.2% | Reduced |