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, Q4 2025
Institutional positions in TransMedics Group, Inc. as of Dec 31, 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
- 429
- +45 vs. Q3 2025
- Shares held
- 37.2M
- +139.4K (+0.4%) vs. Q3 2025
- Total value
- $4.53B
- +$368.2M (+8.9%) vs. Q3 2025
- New holders
- 90
- 156 more added
- Sold out
- 45
- 127 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Inspire Advisors, LLC | 3,706 | $450.9K | 0.04% | −1,672−31.1% | Reduced |
| Versor Investments LP | 3,712 | $451.6K | 0.07% | +552+17.5% | Added |
| Entropy Technologies, LP | 3,742 | $455.2K | 0.02% | +3,742 | New |
| Tower Research Capital LLC (TRC) | 3,752 | $456.4K | 0.01% | +2,215+144.1% | Added |
| Mutual of America Capital Management LLC | 3,906 | $475.2K | 0.00% | +87+2.3% | Added |
| Virtue Asset Management LLC | 3,940 | $479.3K | 0.38% | +62+1.6% | Added |
| Investment Research Partners LLC | 3,966 | $482.5K | 0.21% | +18+0.5% | Added |
| Alps Advisors Inc | 4,014 | $488.3K | 0.00% | +34+0.9% | Added |
| SLT Holdings LLC | 4,099 | $498.6K | 0.33% | +1,575+62.4% | Added |
| Optimize Financial Inc | 4,119 | $501.1K | 0.25% | +56+1.4% | Added |
| Foundations Investment Advisors, LLC | 4,182 | $508.7K | 0.01% | +1,575+60.4% | Added |
| Group One Trading, L.P. | 4,191 | $509.8K | 0.02% | +4,191 | New |
| Quest Partners LLC | 4,202 | $511.2K | 0.03% | +2,652+171.1% | Added |
| IFP Advisors, Inc | 4,270 | $519.4K | 0.01% | −451−9.6% | Reduced |
| Financial Engines Advisors L.L.C. | 4,362 | $530.6K | 0.00% | +48+1.1% | Added |
| Intrust Bank NA | 4,556 | $554.2K | 0.05% | −49−1.1% | Reduced |
| Keebeck Wealth Management, LLC | 4,603 | $560.0K | 0.06% | +1,768+62.4% | Added |
| Envestnet Portfolio Solutions, Inc. | 4,702 | $572.0K | 0.00% | +207+4.6% | Added |
| AQR Capital Management LLC | 4,808 | $584.9K | 0.00% | −3,789−44.1% | Reduced |
| Pictet Asset Management Holding SA | 4,858 | $591.0K | 0.00% | +382+8.5% | Added |
| Prosperity Wealth Management, Inc. | 4,870 | $592.4K | 0.20% | +4,870 | New |
| Maryland State Retirement & Pension System | 5,015 | $610.1K | 0.01% | +114+2.3% | Added |
| Vestmark Advisory Solutions, Inc. | 5,036 | $612.6K | 0.01% | +5,036 | New |
| RB Capital Management, LLC | 5,081 | $618.1K | 0.13% | 00.0% | Unchanged |
| Cornerstone Wealth Management, LLC | 5,116 | $622.4K | 0.03% | −1,817−26.2% | Reduced |
| Amundi | 5,257 | $639.5K | 0.00% | −766−12.7% | Reduced |
| Janney Montgomery Scott LLC | 5,538 | $674.0K | 0.00% | −4,481−44.7% | Reduced |
| Winton Group Ltd | 5,623 | $684.0K | 0.02% | +5,623 | New |
| Kestra Advisory Services, LLC | 5,669 | $689.6K | 0.00% | −936−14.2% | Reduced |
| HighPoint Advisor Group LLC | 5,738 | $698.0K | 0.02% | +2,871+100.1% | Added |
| Values First Advisors, Inc. | 5,763 | $701.1K | 0.36% | −75−1.3% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 5,763 | $701.1K | 0.00% | +288+5.3% | Added |
| Allspring Global Investments Holdings, LLC | 5,813 | $713.2K | 0.00% | +1,644+39.4% | Added |
| Harbour Capital Advisors, LLC | 5,827 | $714.9K | 0.15% | −50−0.9% | Reduced |
| Abundance Wealth Counselors | 6,162 | $749.6K | 0.13% | −15−0.2% | Reduced |
| Gilder Gagnon Howe & Co LLC | 6,207 | $755.1K | 0.01% | −968−13.5% | Reduced |
| Penserra Capital Management LLC | 6,283 | $764.0K | 0.01% | +6,283 | New |
| Pathstone Holdings, LLC | 6,330 | $770.0K | 0.00% | −2,340−27.0% | Reduced |
| Catalyst Capital Advisors LLC | 6,575 | $799.8K | 0.02% | −300−4.4% | Reduced |
| ProShare Advisors LLC | 6,710 | $816.3K | 0.00% | +287+4.5% | Added |
| Wiley Bros.-Aintree Capital, LLC | 6,732 | $818.9K | 0.00% | +264+4.1% | Added |
| Russell Investments Group, Ltd. | 6,871 | $835.9K | 0.00% | +2,322+51.0% | Added |
| Advisor Group Holdings, Inc. | 6,873 | $836.0K | 0.00% | −13,369−66.0% | Reduced |
| KLP Kapitalforvaltning AS | 6,900 | $839.4K | 0.00% | +300+4.5% | Added |
| Clough Capital Partners L P | 7,119 | $866.0K | 0.08% | +7,119 | New |
| Resources Investment Advisors, LLC. | 7,520 | $914.8K | 0.01% | +264+3.6% | Added |
| Stifel Financial Corp | 7,642 | $929.7K | 0.00% | −926−10.8% | Reduced |
| NLB Skladi, upravljanje premozenja, d.o.o. | 7,670 | $933.1K | 0.04% | +7,670 | New |
| Quadrant Capital Group LLC | 7,681 | $934.4K | 0.03% | −20.0% | Reduced |
| Brevan Howard Capital Management LP | 7,761 | $944.1K | 0.02% | −9,719−55.6% | Reduced |
| Graham Capital Management, L.P. | 7,785 | $947.0K | 0.03% | −270−3.4% | Reduced |
| Oregon Public Employees Retirement Fund | 7,797 | $948.5K | 0.01% | +162+2.1% | Added |
| State Board of Administration of Florida Retirement System | 8,217 | $999.6K | 0.00% | 00.0% | Unchanged |
| Park Avenue Securities LLC | 8,462 | $1.03M | 0.01% | +903+11.9% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 8,460 | $1.03M | 0.01% | −222−2.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 8,519 | $1.04M | 0.01% | −1,001−10.5% | Reduced |
| VGI Partners Ltd | 8,600 | $1.05M | 0.06% | +8,600 | New |
| Nisa Investment Advisors, LLC | 8,631 | $1.05M | 0.00% | −22−0.3% | Reduced |
| Wakefield Asset Management LLLP | 8,801 | $1.07M | 0.29% | −18−0.2% | Reduced |
| Mariner, LLC | 9,022 | $1.10M | 0.00% | +405+4.7% | Added |
| Acadian Asset Management LLC | 9,118 | $1.11M | 0.00% | +8,647+1,835.9% | Added |
| Arizona State Retirement System | 9,117 | $1.11M | 0.01% | −383−4.0% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 9,121 | $1.11M | 0.01% | −172−1.9% | Reduced |
| Concurrent Investment Advisors, LLC | 9,344 | $1.14M | 0.01% | +9,344 | New |
| Timothy G. Youngquist 2020 Irrevocable Trust | 9,629 | $1.17M | 1.00% | +9,629 | New |
| Amalgamated Bank | 9,889 | $1.20M | 0.01% | +62+0.6% | Added |
| Renaissance Technologies LLC | 10,299 | $1.25M | 0.00% | −134,900−92.9% | Reduced |
| Virginia Retirement Systems Et Al | 10,400 | $1.27M | 0.01% | +3,800+57.6% | Added |
| Dark Forest Capital Management LP | 10,588 | $1.29M | 0.06% | −18,817−64.0% | Reduced |
| Cetera Investment Advisers | 10,771 | $1.31M | 0.00% | +2,240+26.3% | Added |
| Polen Capital Management LLC | 10,828 | $1.32M | 0.01% | +5,138+90.3% | Added |
| Handelsbanken Fonder AB | 11,000 | $1.34M | 0.00% | 00.0% | Unchanged |
| Fieldview Capital Management, LLC | 11,045 | $1.34M | 0.23% | −4,246−27.8% | Reduced |
| Yousif Capital Management, LLC | 9,491 | $1.35M | 0.01% | −1,347−12.4% | Reduced |
| Polymer Capital Management (US) LLC | 11,197 | $1.36M | 0.18% | +11,197 | New |
| Voya Investment Management LLC | 11,652 | $1.42M | 0.00% | +958+9.0% | Added |
| Shelton Wealth Management, LLC | 11,885 | $1.45M | 0.63% | +1,449+13.9% | Added |
| MML Investors Services, LLC | 11,934 | $1.45M | 0.00% | +419+3.6% | Added |
| Militia Capital Partners, LP | 12,000 | $1.46M | 0.55% | −1,000−7.7% | Reduced |
| Natixis Advisors, L.P. | 12,023 | $1.46M | 0.00% | −1,259−9.5% | Reduced |
| Campbell Newman Asset Management Inc | 12,039 | $1.46M | 0.11% | −459−3.7% | Reduced |
| Guggenheim Capital LLC | 12,542 | $1.53M | 0.01% | +10,146+423.5% | Added |
| Sit Investment Associates Inc | 13,380 | $1.63M | 0.03% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 13,572 | $1.65M | 0.01% | +2,549+23.1% | Added |
| XTX Topco Ltd | 13,693 | $1.67M | 0.04% | +6,035+78.8% | Added |
| Summit Financial, LLC | 13,718 | $1.67M | 0.02% | +418+3.1% | Added |
| Engineers Gate Manager LP | 13,773 | $1.68M | 0.02% | −10,379−43.0% | Reduced |
| Baird Financial Group, Inc. | 13,875 | $1.69M | 0.00% | −6,994−33.5% | Reduced |
| Hussman Strategic Advisors, Inc. | 14,700 | $1.79M | 0.43% | +14,700 | New |
| HB Wealth Management, LLC | 14,736 | $1.79M | 0.01% | +258+1.8% | Added |
| State of Tennessee, Treasury Department | 13,533 | $1.81M | 0.01% | −1,379−9.2% | Reduced |
| Weiss Asset Management LP | 15,264 | $1.86M | 0.03% | +15,264 | New |
| D.A. Davidson & Co. | 15,334 | $1.87M | 0.01% | +83+0.5% | Added |
| American Century Companies Inc | 15,546 | $1.89M | 0.00% | +15,546 | New |
| Kensington Investment Counsel, LLC | 15,584 | $1.90M | 0.77% | −1,581−9.2% | Reduced |
| Dana Investment Advisors, Inc. | 15,658 | $1.90M | 0.06% | −175−1.1% | Reduced |
| Manufacturers Life Insurance Company, The | 15,691 | $1.91M | 0.00% | −669−4.1% | Reduced |
| Louisiana State Employees Retirement System | 15,700 | $1.91M | 0.03% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 15,725 | $1.91M | 0.00% | +8,762+125.8% | Added |
| Legato Capital Management LLC | 15,735 | $1.91M | 0.16% | +5,170+48.9% | Added |