Security record
TMDX
TransMedics Group, Inc. · Healthcare · Medical - Devices
105Tracked holders
-3Δ holders
25.87MShares held
$1.72BReported value
+11New positions
−13Exits
Momentum inputs (comparable managers):
holder breadth -2.8% ·
share flow -4.7% ·
net new positions -1.9%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 105 | -3 | 25.87M | $1.72B | +11 | −13 |
| Q1 2026 | 110 | -2 | 27.24M | $2.71B | +6 | −9 |
| Q4 2025 | 113 | -2 | 29.10M | $3.52B | +1 | −2 |
| Q3 2025 | 21 | +2 | 20.81M | $2.34B | +2 | −1 |
| Q2 2025 | 17 | +3 | 18.14M | $2.43B | +3 | — |
| Q1 2025 | 11 | -1 | 3.86M | $259.47M | +2 | −3 |
| Q4 2024 | 12 | +2 | 3.62M | $225.65M | +3 | −1 |
| Q3 2024 | 9 | -4 | 2.19M | $344.12M | — | −4 |
| Q2 2024 | 13 | — | 2.46M | $370.15M | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 5.60M | +5.7% | $371.72M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 5.13M | +0.7% | $340.96M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | Vanguard Capital Management Llc | 1.50M | +1.3% | $99.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | State Street Global Advisors ✦ (passive) | 1.42M | +7.7% | $94.34M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 28 | State Street Global Advisors ✦ (passive) | 1.42M | +7.7% | $94.34M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 29 | Nomura Asset Management… | 910.50K | +2.8% | $60.48M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 30 | Geode Capital Management ✦ (passive) | 894.91K | +6.6% | $59.45M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 31 | Geode Capital Management ✦ (passive) | 894.91K | +6.6% | $59.45M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 32 | Dimensional Fund Advisors Lp | 610.11K | +18.1% | $40.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 33 | Dimensional Fund Advisors Lp | 610.11K | +18.1% | $40.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 34 | Dimensional Fund Advisors Lp | 610.11K | +18.1% | $40.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 35 | Dimensional Fund Advisors Lp | 610.11K | +18.1% | $40.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 36 | Dimensional Fund Advisors Lp | 610.11K | +18.1% | $40.53M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 37 | Goldman Sachs Group ✦ | 559.77K | -35.4% | $37.18M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 38 | Goldman Sachs Group ✦ | 559.77K | -35.4% | $37.18M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 39 | Citadel Advisors ✦ | 558.82K | +807.2% | $37.12M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 40 | Citadel Advisors ✦ | 558.82K | +807.2% | $37.12M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 41 | Wellington Management ✦ | 515.97K | +6.1% | $34.27M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 42 | Wellington Management ✦ | 515.97K | +6.1% | $34.27M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 43 | Wellington Management ✦ | 515.97K | +6.1% | $34.27M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 44 | Wellington Management ✦ | 515.97K | +6.1% | $34.27M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 45 | Wellington Management ✦ | 515.97K | +6.1% | $34.27M | 0.0% | ▲ Add | 9 | SEC ↗ |
| 46 | UBS Group AG | 488.06K | -16.0% | $32.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 47 | UBS Group AG | 488.06K | -16.0% | $32.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 48 | UBS Group AG | 488.06K | -16.0% | $32.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 49 | UBS Group AG | 488.06K | -16.0% | $32.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 405.11K | -41.6% | $26.91M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 57 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 58 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 59 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 60 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 61 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 62 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 63 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 64 | UBS AM, a distinct business unit of… | 398.25K | -57.6% | $26.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 65 | Invesco Ltd. | 394.98K | -62.0% | $26.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 66 | Invesco Ltd. | 394.98K | -62.0% | $26.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 67 | Invesco Ltd. | 394.98K | -62.0% | $26.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 68 | Invesco Ltd. | 394.98K | -62.0% | $26.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 69 | Invesco Ltd. | 394.98K | -62.0% | $26.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 70 | Citigroup Inc | 386.07K | +8.0% | $25.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 71 | Citigroup Inc | 386.07K | +8.0% | $25.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 72 | Citigroup Inc | 386.07K | +8.0% | $25.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Capital World Investors ✦ | 384.67K | +2.8% | $25.55M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 74 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 75 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 77 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 78 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 80 | Northern Trust Corp | 368.86K | +9.1% | $24.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 81 | Charles Schwab Investment… | 328.67K | +3.0% | $21.83M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Baillie Gifford ✦ | 267.94K | -12.2% | $17.80M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 83 | Baillie Gifford ✦ | 267.94K | -12.2% | $17.80M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 84 | Baillie Gifford ✦ | 267.94K | -12.2% | $17.80M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 85 | Baillie Gifford ✦ | 267.94K | -12.2% | $17.80M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 86 | Wells Fargo & Company/Mn | 260.22K | -5.0% | $17.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 87 | Wells Fargo & Company/Mn | 260.22K | -5.0% | $17.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 88 | Wells Fargo & Company/Mn | 260.22K | -5.0% | $17.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 89 | Wells Fargo & Company/Mn | 260.22K | -5.0% | $17.28M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 90 | Bank Of America Corp /De/ | 257.00K | -12.9% | $17.07M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 91 | Bank Of America Corp /De/ | 257.00K | -12.9% | $17.07M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 92 | Bank Of America Corp /De/ | 257.00K | -12.9% | $17.07M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 93 | Bank Of America Corp /De/ | 257.00K | -12.9% | $17.07M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 94 | Bank Of America Corp /De/ | 257.00K | -12.9% | $17.07M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 95 | Susquehanna International Group, Llp | 255.40K | +90.8% | $16.96M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Tidal Investments LLC | 251.20K | New | $16.68M | 0.0% | New | 1 | SEC ↗ |
| 97 | Millennium Management ✦ | 248.31K | -18.9% | $16.49M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 98 | Principal Financial Group Inc | 240.87K | +4.1% | $16.00M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 99 | Principal Financial Group Inc | 240.87K | +4.1% | $16.00M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 100 | Barclays Plc | 237.62K | +24.7% | $15.78M | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Tidal Investments LLC | $16.68M | 0.0% |
Exited
| Federated Hermes, Inc. | $5.11M | was 0.0% |
| Tudor Investment Corp Et Al | $4.00M | was 0.0% |
| Gotham Asset Management | $3.76M | was 0.0% |
| Baird Financial Group, Inc. | $2.11M | was 0.0% |
| Marshall Wace | $1.56M | was 0.0% |
| Canada Pension Plan… | $844,985 | was 0.0% |
| Squarepoint Ops LLC | $723,108 | was 0.0% |
| Captrust Financial Advisors | $692,769 | was 0.0% |
| Massachusetts Financial… | $321,293 | was 0.0% |
| Neuberger Berman Group LLC | $313,738 | was 0.0% |
| Truist Financial Corp | $249,718 | was 0.0% |
| D. E. Shaw & Co. | $246,636 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 412 holders, 36.17M shares, $3.51B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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