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 |
|---|---|---|---|---|---|
| Fred Alger Management, LLC | 30,005 | $2.98M | 0.01% | −264−0.9% | Reduced |
| Vanguard Asset Management, Ltd | 29,763 | $2.96M | 0.00% | +29,763 | New |
| New York State Teachers Retirement System | 29,430 | $2.93M | 0.01% | −73−0.2% | Reduced |
| IMC-Chicago, LLC | 27,692 | $2.75M | 0.04% | +27,692 | New |
| Royal Bank of Canada | 26,937 | $2.68M | 0.00% | −35,896−57.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 25,898 | $2.57M | 0.00% | −3,943−13.2% | Reduced |
| Algert Global LLC | 25,444 | $2.53M | 0.04% | −4,850−16.0% | Reduced |
| Emerald Investment Advisers, LLC | 25,042 | $2.49M | 0.22% | +25,042 | New |
| Bullseye Asset Management LLC | 24,061 | $2.39M | 1.39% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 22,810 | $2.27M | 0.00% | −673−2.9% | Reduced |
| Panagora Asset Management Inc | 22,584 | $2.25M | 0.01% | −79,441−77.9% | Reduced |
| Intech Investment Management LLC | 21,883 | $2.18M | 0.02% | +2,970+15.7% | Added |
| Regency Capital Management Inc. | 21,846 | $2.17M | 0.97% | +21,846 | New |
| Baird Financial Group, Inc. | 21,202 | $2.11M | 0.00% | +7,327+52.8% | Added |
| Militia Capital Management LLC | 21,000 | $2.09M | 0.47% | +21,000 | New |
| Perigon Wealth Management, LLC | 20,954 | $2.08M | 0.04% | −371−1.7% | Reduced |
| Fifth Third Bancorp | 20,802 | $2.07M | 0.00% | +20,363+4,638.5% | Added |
| Creative Planning | 20,637 | $2.05M | 0.00% | −993−4.6% | Reduced |
| Commonwealth Equity Services, LLC | 20,132 | $2.00M | 0.00% | −2,359−10.5% | Reduced |
| Taylor Frigon Capital Management LLC | 19,718 | $1.96M | 1.12% | −105−0.5% | Reduced |
| Illinois Municipal Retirement Fund | 19,618 | $1.95M | 0.02% | −915−4.5% | Reduced |
| New York State Common Retirement Fund | 18,640 | $1.85M | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 18,327 | $1.82M | 0.01% | −193−1.0% | Reduced |
| Dana Investment Advisors, Inc. | 17,593 | $1.75M | 0.05% | +1,935+12.4% | Added |
| Cambridge Investment Research Advisors, Inc. | 17,445 | $1.73M | 0.00% | −224−1.3% | Reduced |
| Jump Financial, LLC | 17,387 | $1.73M | 0.03% | +13,987+411.4% | Added |
| Cetera Investment Advisers | 17,073 | $1.70M | 0.00% | +6,302+58.5% | Added |
| State of New Jersey Common Pension Fund D | 16,924 | $1.68M | 0.01% | −1,500−8.1% | Reduced |
| State of Alaska, Department of Revenue | 16,870 | $1.68M | 0.02% | −531−3.1% | Reduced |
| Teachers Retirement System of the State of Kentucky | 16,779 | $1.67M | 0.01% | +8,260+97.0% | Added |
| Gladstone Institutional Advisory LLC | 16,595 | $1.65M | 0.06% | −10−0.1% | Reduced |
| Marshall Wace, LLP | 15,646 | $1.56M | 0.00% | −174,824−91.8% | Reduced |
| Twinbeech Capital LP | 15,600 | $1.55M | 0.16% | +15,600 | New |
| Blue Jean Financial LLC | 15,273 | $1.52M | 1.25% | +15,273 | New |
| Franklin Resources Inc | 15,255 | $1.52M | 0.00% | −516−3.3% | Reduced |
| Manufacturers Life Insurance Company, The | 15,234 | $1.51M | 0.00% | −457−2.9% | Reduced |
| Louisiana State Employees Retirement System | 15,200 | $1.51M | 0.03% | −500−3.2% | Reduced |
| Russell Investments Group, Ltd. | 15,121 | $1.50M | 0.00% | +8,250+120.1% | Added |
| D.A. Davidson & Co. | 14,971 | $1.49M | 0.01% | −363−2.4% | Reduced |
| HB Wealth Management, LLC | 14,843 | $1.48M | 0.01% | +107+0.7% | Added |
| Public Employees Retirement System of Ohio | 14,666 | $1.46M | 0.00% | +1,094+8.1% | Added |
| Vanguard Global Advisers, LLC | 14,595 | $1.45M | 0.00% | +14,595 | New |
| Timothy G. Youngquist 2020 Irrevocable Trust | 14,444 | $1.44M | 0.70% | +4,815+50.0% | Added |
| Summit Financial, LLC | 14,176 | $1.41M | 0.02% | +458+3.3% | Added |
| Handelsbanken Fonder AB | 13,900 | $1.38M | 0.00% | +2,900+26.4% | Added |
| Sit Investment Associates Inc | 13,380 | $1.33M | 0.03% | 00.0% | Unchanged |
| Shelton Wealth Management, LLC | 13,148 | $1.31M | 0.58% | +1,263+10.6% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 13,101 | $1.30M | 0.00% | −3,164−19.5% | Reduced |
| Voya Investment Management LLC | 12,589 | $1.25M | 0.00% | +937+8.0% | Added |
| HighTower Advisors, LLC | 12,519 | $1.24M | 0.00% | −3,888−23.7% | Reduced |
| Campbell Newman Asset Management Inc | 12,248 | $1.22M | 0.10% | +209+1.7% | Added |
| Winton Group Ltd | 11,941 | $1.19M | 0.04% | +6,318+112.4% | Added |
| Steinberganna Wealth Management | 11,596 | $1.15M | 0.55% | +11,596 | New |
| Portolan Capital Management, LLC | 10,688 | $1.06M | 0.06% | −86,205−89.0% | Reduced |
| Virtu Financial LLC | 10,367 | $1.03M | 0.04% | −16,582−61.5% | Reduced |
| Natixis Advisors, L.P. | 10,220 | $1.02M | 0.00% | −1,803−15.0% | Reduced |
| NLB Skladi, upravljanje premozenja, d.o.o. | 10,170 | $1.01M | 0.05% | +2,500+32.6% | Added |
| Amalgamated Bank | 9,819 | $976.0K | 0.01% | −70−0.7% | Reduced |
| Park Avenue Securities LLC | 9,790 | $973.0K | 0.01% | +1,328+15.7% | Added |
| Yousif Capital Management, LLC | 9,421 | $936.5K | 0.01% | −70−0.7% | Reduced |
| Nisa Investment Advisors, LLC | 9,306 | $925.1K | 0.00% | +675+7.8% | Added |
| Police & Firemen's Retirement System of New Jersey | 9,121 | $906.7K | 0.01% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 9,100 | $904.6K | 0.01% | −1,300−12.5% | Reduced |
| Victory Capital Management Inc | 8,961 | $890.8K | 0.00% | −18,916−67.9% | Reduced |
| Arizona State Retirement System | 8,918 | $886.5K | 0.01% | −199−2.2% | Reduced |
| Strong Tower Advisory Services | 8,891 | $883.9K | 0.17% | +8,891 | New |
| State of Tennessee, Treasury Department | 8,744 | $869.2K | 0.00% | −4,789−35.4% | Reduced |
| MML Investors Services, LLC | 8,744 | $869.2K | 0.00% | −3,190−26.7% | Reduced |
| CI Private Wealth, LLC | 8,641 | $857.7K | 0.00% | +5,557+180.2% | Added |
| Canada Pension Plan Investment Board | 8,500 | $845.0K | 0.00% | −36,100−80.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 8,451 | $840.1K | 0.00% | −9−0.1% | Reduced |
| Kensington Investment Counsel, LLC | 8,291 | $824.2K | 0.40% | −7,293−46.8% | Reduced |
| State Board of Administration of Florida Retirement System | 8,217 | $816.9K | 0.00% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 8,118 | $807.0K | 0.00% | +8,118 | New |
| Quantinno Capital Management LP | 8,059 | $801.1K | 0.00% | +5,354+197.9% | Added |
| Oregon Public Employees Retirement Fund | 7,784 | $773.8K | 0.01% | −13−0.2% | Reduced |
| AQR Capital Management LLC | 7,779 | $773.3K | 0.00% | +2,971+61.8% | Added |
| Quadrant Capital Group LLC | 7,647 | $760.2K | 0.02% | −34−0.4% | Reduced |
| Stifel Financial Corp | 7,566 | $752.1K | 0.00% | −76−1.0% | Reduced |
| Resources Investment Advisors, LLC. | 7,507 | $746.3K | 0.01% | −13−0.2% | Reduced |
| Polen Capital Management LLC | 7,422 | $737.8K | 0.01% | −3,406−31.5% | Reduced |
| Squarepoint Ops LLC | 7,274 | $723.1K | 0.00% | −103,222−93.4% | Reduced |
| Oasis Advisors, LLC | 7,232 | $718.9K | 0.14% | +7,232 | New |
| KLP Kapitalforvaltning AS | 7,100 | $705.8K | 0.00% | +200+2.9% | Added |
| Advisor Group Holdings, Inc. | 6,988 | $694.6K | 0.00% | +115+1.7% | Added |
| Captrust Financial Advisors | 6,969 | $692.8K | 0.00% | +5,289+314.8% | Added |
| SG Americas Securities, LLC | 6,910 | $687.0K | 0.00% | −8,815−56.1% | Reduced |
| Amundi | 6,897 | $685.6K | 0.00% | +1,640+31.2% | Added |
| Harbour Capital Advisors, LLC | 5,807 | $665.8K | 0.13% | −20−0.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 6,465 | $649.1K | 0.00% | +652+11.2% | Added |
| Group One Trading, L.P. | 6,336 | $629.9K | 0.02% | +2,145+51.2% | Added |
| Havemeyer Place LP | 6,170 | $613.4K | 0.07% | +4,093+197.1% | Added |
| XTX Topco Ltd | 6,132 | $609.6K | 0.01% | −7,561−55.2% | Reduced |
| Gilder Gagnon Howe & Co LLC | 6,130 | $609.4K | 0.01% | −77−1.2% | Reduced |
| Values First Advisors, Inc. | 5,944 | $590.9K | 0.31% | +181+3.1% | Added |
| Yorktown Management & Research Co Inc | 5,800 | $576.6K | 0.48% | +2,300+65.7% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 5,711 | $567.7K | 0.00% | −52−0.9% | Reduced |
| Centiva Capital, LP | 5,674 | $564.1K | 0.03% | +5,674 | New |
| Janney Montgomery Scott LLC | 5,455 | $542.0K | 0.00% | −83−1.5% | Reduced |
| ProShare Advisors LLC | 5,405 | $537.3K | 0.00% | −1,305−19.4% | Reduced |