Transmedics GroupTMDX
13F holders, Q3 2025 (September 30)388holders +20
69new positions
50sold out
8famous investors
$112.21avg. 13F price*
At the end of Q3 2025, 388 institutions reported holding Transmedics Group Inc. (TMDX) in their 13F filings, up 20 from Q2 2025. 69 opened new positions and 50 sold out. The largest holders were BlackRock, Inc. ($598.2M), FMR LLC ($568.2M) and Vanguard Group Inc. ($404.5M). 8 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Ray Dalio (0.0% of Bridgewater Associates's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Transmedics Group Inc.
- CUSIP
- 89377M109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 69 | $87.7M |
| Exits | 50 | $266.3M |
All 13F filers, Q2 2025 → Q3 2025: 4,195,434 shares bought and 3,864,584 shares sold, net +330,850 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 388 holders
| BlackRock, Inc. | 0.01% | Add +2.1% | 5,331,598 | $598.2M |
| FMR LLC | 0.03% | Add +0.8% | 5,064,370 | $568.2M |
| Vanguard Group Inc. | 0.01% | Add +0.3% | 3,605,607 | $404.5M |
| State Street Corp. | 0.01% | Reduce -0.7% | 1,279,541 | $143.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.03% | Add +11.9% | 1,069,492 | $120.0M |
| Macquarie Group Ltd. | 0.12% | Reduce -4.8% | 906,268 | $101.7M |
| UBS Group AG | 0.02% | Add +79.8% | 856,063 | $96.1M |
| Geode Capital Management, LLC | 0.01% | Add +1.1% | 813,571 | $91.3M |
| Driehaus Capital Management LLC | 0.59% | Reduce -13.6% | 738,158 | $82.8M |
| Goldman Sachs Group Inc. | 0.01% | Add +121.8% | 703,578 | $78.9M |
| Hood River Capital Management LLC | 0.90% | Reduce -0.2% | 678,437 | $76.1M |
| Two Sigma Investments, LP | 0.12% | Add +54.2% | 635,394 | $71.3M |
| Morgan Stanley | 0.00% | Reduce -25.2% | 547,819 | $61.5M |
| Eventide Asset Management, LLC | 1.01% | Reduce -0.0% | 547,296 | $61.4M |
| Marshall Wace, LLP | 0.07% | Reduce -0.9% | 541,678 | $60.8M |
| Dimensional Fund Advisors LP | 0.01% | Add +20.3% | 450,993 | $50.6M |
| Two Sigma Advisers, LP | 0.10% | Add +53.7% | 423,300 | $47.5M |
| T. Rowe Price Associates Inc. | 0.00% | Add +188.8% | 398,160 | $44.7M |
| JPMorgan Chase & Co. | 0.00% | Reduce -15.5% | 392,356 | $44.0M |
| Emerald Advisers, LLC | 1.39% | Reduce -11.8% | 387,588 | $43.5M |
| Invesco Ltd. | 0.01% | Reduce -19.1% | 385,804 | $43.3M |
| Braidwell LP | 1.59% | Add +37.7% | 351,248 | $39.4M |
| Northern Trust Corp. | 0.01% | Reduce -1.5% | 347,469 | $39.0M |
| Wasatch Advisors LP | 0.20% | Reduce -3.0% | 325,202 | $36.5M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +1.8% | 320,787 | $36.0M |
| Brown Capital Management LLC | 1.45% | Reduce -30.5% | 313,855 | $35.2M |
| ArrowMark Colorado Holdings LLC | 0.65% | Add +54.0% | 313,125 | $35.1M |
| Baillie Gifford & Co. | 0.02% | Reduce -0.8% | 260,719 | $29.3M |
| Zevenbergen Capital Investments LLC | 0.56% | Add +112.7% | 258,523 | $29.0M |
| Royce & Associates LP | 0.27% | Reduce -1.7% | 243,149 | $27.3M |
| Principal Financial Group Inc. | 0.01% | Add +28.7% | 242,039 | $27.2M |
| Emerald Mutual Fund Advisers Trust | 1.38% | Reduce -6.7% | 238,438 | $26.8M |
| Capital World Investors | 0.00% | No change | 227,441 | $25.5M |
| Wells Fargo & Company | 0.01% | Add +14.0% | 224,781 | $25.2M |
| Frontier Capital Management Co. LLC | 0.22% | Add +199.0% | 219,466 | $24.6M |
| Wellington Management Group LLP | 0.00% | Reduce -2.2% | 216,141 | $24.3M |
| Bank of America Corp. | 0.00% | Reduce -0.7% | 215,975 | $24.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.3% | 211,797 | $23.8M |
| BNP Paribas Financial Markets | 0.02% | Add +6.4% | 210,070 | $23.6M |
| Barclays PLC | 0.01% | Add +8.9% | 201,858 | $22.6M |
| Royal Bank of Canada | 0.00% | Reduce -34.0% | 198,442 | $22.3M |
| Deutsche Bank AG | 0.01% | Add +29.8% | 172,623 | $19.4M |
| Fred Alger Management, LLC | 0.07% | Add +303.8% | 150,741 | $16.9M |
| Davidson Kempner Capital Management LP | 0.35% | Add +41.0% | 146,400 | $16.4M |
| Renaissance Technologies | 0.02% | New | 145,199 | $16.3M |
| Lord, Abbett & Co. LLC | 0.05% | Reduce -5.2% | 133,414 | $15.0M |
| Public Sector Pension Investment Board | 0.05% | Add +15.3% | 132,972 | $14.9M |
| Squarepoint Ops LLC | 0.03% | Add +1713.4% | 132,504 | $14.9M |
| Montanaro Asset Management Ltd | 3.66% | Add +3.7% | 130,586 | $14.7M |
| Jump Financial, LLC | 0.19% | Add +482.7% | 127,032 | $14.3M |
| Citadel Advisors | 0.01% | Reduce -20.1% | 124,917 | $14.0M |
| Bellevue Group AG | 0.27% | Reduce -10.4% | 116,968 | $13.1M |
| Ameriprise Financial Inc. | 0.00% | Add +12.4% | 114,790 | $12.9M |
| Man Group plc | 0.03% | Add +360.8% | 113,556 | $12.7M |
| Raymond James Financial Inc. | 0.00% | Reduce -41.0% | 112,980 | $12.7M |
| Oppenheimer & Co. Inc. | 0.15% | Reduce -4.9% | 111,640 | $12.5M |
| Lagoda Investment Management, L.P. | 6.86% | Add +3.5% | 108,060 | $12.1M |
| State of Michigan Retirement System | 0.06% | No change | 108,000 | $12.1M |
| Bank of Montreal | 0.01% | Reduce -38.6% | 105,117 | $11.8M |
| Rhumbline Advisers | 0.01% | Add +0.1% | 93,342 | $10.5M |
| Susquehanna International Group, LLP | 0.01% | Add +125.3% | 90,297 | $10.1M |
| Legal & General Group Plc | 0.00% | Reduce -4.7% | 88,160 | $9.9M |
| Trexquant Investment LP | 0.09% | Reduce -27.7% | 80,401 | $9.0M |
| Jane Street Group, LLC | 0.01% | Reduce -61.1% | 78,156 | $8.8M |
| Citigroup Inc. | 0.01% | Add +77.0% | 76,785 | $8.6M |
| Nuveen, LLC | 0.00% | Reduce -1.2% | 76,366 | $8.6M |
| Panagora Asset Management Inc. | 0.03% | New | 76,300 | $8.6M |
| Renaissance Group LLC | 0.32% | New | 76,078 | $8.5M |
| Ensign Peak Advisors, Inc | 0.01% | Reduce -23.7% | 74,631 | $8.4M |
| Lazard Asset Management LLC | 0.01% | Add +279.7% | 70,552 | $7.9M |
| Portolan Capital Management, LLC | 0.42% | New | 68,910 | $7.7M |
| Peregrine Capital Management LLC | 0.23% | Add +16.5% | 68,406 | $7.7M |
| Wolverine Trading, LLC | 0.15% | Add +50.4% | 65,578 | $7.4M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +6.1% | 65,345 | $7.3M |
| Credit Agricole S A | 0.02% | — | 63,615 | $7.1M |
| Swiss National Bank | 0.00% | Add +2.0% | 62,300 | $7.0M |
| Biondo Investment Advisors, LLC | 0.82% | Reduce -0.2% | 58,375 | $6.5M |
| Blair William & Co. | 0.02% | Reduce -16.1% | 57,443 | $6.4M |
| F/m Investments LLC | 0.25% | Add +6.7% | 56,912 | $6.4M |
| Lisanti Capital Growth, LLC | 1.56% | Add +62.0% | 56,901 | $6.4M |
| Next Century Growth Investors LLC | 0.44% | Reduce -54.6% | 54,350 | $6.1M |
| Balyasny Asset Management L.P. | 0.01% | Add +102.2% | 54,305 | $6.1M |
| Millennium Management | 0.00% | Reduce -57.5% | 48,814 | $5.5M |
| Envestnet Asset Management Inc. | 0.00% | Add +78.9% | 47,048 | $5.3M |
| Prudential Financial Inc. | 0.01% | Add +28.7% | 46,271 | $5.2M |
| Bastion Asset Management Inc. | 2.95% | New | 44,887 | $5.1M |
| Beaconlight Capital, LLC | 2.45% | Add +105.4% | 44,218 | $5.0M |
| Sei Investments Co. | 0.01% | Add +4.5% | 43,716 | $4.9M |
| Alliancebernstein L.P. | 0.00% | Add +0.0% | 40,789 | $4.6M |
| First Trust Advisors LP | 0.00% | Reduce -9.9% | 39,093 | $4.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -7.0% | 38,409 | $4.3M |
| Divisadero Street Capital Management, LP | 0.20% | No change | 38,390 | $4.3M |
| D. E. Shaw & Co. | 0.00% | Reduce -51.6% | 37,270 | $4.2M |
| Nordea Investment Management AB | 0.00% | New | 36,372 | $4.1M |
| Trillium Asset Management, LLC | 0.10% | Reduce -1.5% | 33,533 | $3.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Reduce -0.8% | 32,468 | $3.6M |
| LPL Financial LLC | 0.00% | Add +41.7% | 31,677 | $3.6M |
| Nomura Holdings Inc. | 0.02% | New | 30,975 | $3.5M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 30,830 | $3.5M |
| Bridgewater Associates | 0.01% | New | 30,085 | $3.4M |
"% of holder's portfolio" is TMDX's weight in each manager's 13F, not the share of Transmedics Group Inc. the manager owns.