ANDOVER, MA
TRANSMEDICS GROUP, INC.TMDX— Latest position per institution from SEC 13F filings
15
Institutional holders
33.20M
Total shares held
2.75B
Estimated value
1.66M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
5.60M
Value
371.72M
Filed
Jun 30, 2026
FMR LLC
CIK 315066
Shares
5.13M
Value
340.96M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.61M
Value
438.58M
Filed
Dec 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.65M
Value
398.47M
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.93M
Value
128.46M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.50M
Value
99.47M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
1.44M
Value
95.78M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.42M
Value
94.34M
Filed
Jun 30, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.42M
Value
94.13M
Filed
Jun 30, 2026
FIL LTD
CIK 318989
Shares
1.06M
Value
141.45M
Filed
Jun 30, 2025
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
CIK 921739
Shares
910.50K
Value
60.48M
Filed
Jun 30, 2026
MACQUARIE GROUP LTD
CIK 1418333
Shares
906.27K
Value
101.68M
Filed
Sep 30, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
894.91K
Value
59.45M
Filed
Jun 30, 2026
CREDIT SUISSE AG/
CIK 824468
Shares
847.88K
Value
62.69M
Filed
Mar 31, 2024
TIDAL INVESTMENTS LLC
CIK 1600064
Shares
751.20K
Value
49.89M
Filed
Jun 30, 2026
HOOD RIVER CAPITAL MANAGEMENT LLC
CIK 1578177
Shares
751.13K
Value
49.89M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
615.30K
Value
40.87M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
610.11K
Value
40.53M
Filed
Jun 30, 2026
BRAIDWELL LP
CIK 1920938
Shares
609.72K
Value
40.50M
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
559.77K
Value
37.18M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 5.60M | 371.72M | Jun 30, 2026 |
| 2 | FMR LLC | 315066 | 5.13M | 340.96M | Jun 30, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 3.61M | 438.58M | Dec 31, 2025 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 2.65M | 398.47M | Jun 30, 2024 |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.93M | 128.46M | Jun 30, 2026 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.50M | 99.47M | Jun 30, 2026 |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 1.44M | 95.78M | Jun 30, 2026 |
| 8 | STATE STREET CORP | 93751 | 1.42M | 94.34M | Jun 30, 2026 |
| 9 | CITADEL ADVISORS LLC | 1423053 | 1.42M | 94.13M | Jun 30, 2026 |
| 10 | FIL LTD | 318989 | 1.06M | 141.45M | Jun 30, 2025 |
| 11 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 921739 | 910.50K | 60.48M | Jun 30, 2026 |
| 12 | MACQUARIE GROUP LTD | 1418333 | 906.27K | 101.68M | Sep 30, 2025 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 894.91K | 59.45M | Jun 30, 2026 |
| 14 | CREDIT SUISSE AG/ | 824468 | 847.88K | 62.69M | Mar 31, 2024 |
| 15 | TIDAL INVESTMENTS LLC | 1600064 | 751.20K | 49.89M | Jun 30, 2026 |
| 16 | HOOD RIVER CAPITAL MANAGEMENT LLC | 1578177 | 751.13K | 49.89M | Jun 30, 2026 |
| 17 | JANE STREET GROUP, LLC | 1595888 | 615.30K | 40.87M | Jun 30, 2026 |
| 18 | DIMENSIONAL FUND ADVISORS LP | 354204 | 610.11K | 40.53M | Jun 30, 2026 |
| 19 | BRAIDWELL LP | 1920938 | 609.72K | 40.50M | Jun 30, 2026 |
| 20 | GOLDMAN SACHS GROUP INC | 886982 | 559.77K | 37.18M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.