TMDX
TransMedics Group, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -30.0% ·
share flow -10.8% ·
net new positions -20.0%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| 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 | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 763.79K | +1.3% | $119.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 763.79K | +1.3% | $119.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Norges Bank ✦ (passive) | 358.08K | +32.7% | $56.22M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 303.77K | -3.4% | $47.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | Wellington Management ✦ | 303.77K | -3.4% | $47.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Wellington Management ✦ | 303.77K | -3.4% | $47.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Wellington Management ✦ | 303.77K | -3.4% | $47.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 293.47K | -11.2% | $46.08M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 293.47K | -11.2% | $46.08M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Baillie Gifford ✦ | 234.89K | -8.8% | $36.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Baillie Gifford ✦ | 234.89K | -8.8% | $36.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Baillie Gifford ✦ | 234.89K | -8.8% | $36.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Baillie Gifford ✦ | 234.89K | -8.8% | $36.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Millennium Management ✦ | 111.84K | +49.9% | $17.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Renaissance Technologies ✦ | 111.80K | -15.2% | $17.55M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 9.17K | +204.1% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 9.17K | +204.1% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 9.17K | +204.1% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Bridgewater Associates ✦ | 4.87K | -78.0% | $764,904 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| D. E. Shaw & Co. | $31.67M | was 0.0% |
| Citadel Advisors | $11.77M | was 0.0% |
| Marshall Wace | $1.42M | was 0.0% |
| Gotham Asset Management | $300,186 | 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.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.