Transmedics
TMDX
374 hedge funds and large institutions have $2.31B invested in Transmedics in 2026 Q2 according to their latest regulatory filings, with 68 funds opening new positions, 139 increasing their positions, 124 reducing their positions, and 106 closing their positions.
12% more repeat investments, than reductions
Existing positions increased: 139 | Existing positions reduced: 124
5.59% less ownership
Funds ownership: 106.3% → 100.71% (-5.6%)
10% less funds holding
Funds holding: 416 → 374 (-42)
12% less call options, than puts
Call options by funds: $115M | Put options by funds: $131M
36% less first-time investments, than exits
New positions opened: 68 | Existing positions closed: 106
36% less capital invested
Capital invested by funds: $3.63B → $2.31B (-$1.31B)
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$42.1M |
| 2 |
BlackRock
New York
|
+$25.7M |
| 3 |
B
Braidwell
Stamford,
Connecticut
|
+$23.7M |
| 4 |
TI
Tidal Investments
Milwaukee,
Wisconsin
|
+$21.3M |
| 5 |
CAM
Congress Asset Management
Boston,
Massachusetts
|
+$19.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
-$54.4M |
| 2 |
UBS AM
Chicago,
Illinois
|
-$45.8M |
| 3 |
Two Sigma Investments
New York
|
-$26.8M |
| 4 |
Goldman Sachs
New York
|
-$25.9M |
| 5 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$25.4M |
TMDX Hedge Fund Activity: Q2 2026 in Review
374 of the 8,305 institutional investors tracked by Wall St. Rank reported a position in Transmedics (TMDX) for Q2 2026, worth a combined $2.31B — down 36% from $3.63B a quarter earlier.
Sellers outnumbered buyers: 106 funds closed out of TMDX and 68 opened new positions — a net loss of 38 holders — while 124 trimmed existing stakes and 139 added.
The largest buyer was Citadel Advisors, adding an estimated $42.1M. The largest seller was Invesco, cutting an estimated $54.4M.
- 374 institutional investors held Transmedics (TMDX) as of Q2 2026, down from 416 in Q1 2026.
- Funds reported $2.31B of Transmedics stock for Q2 2026, down 36% quarter-over-quarter.
- 68 funds opened new Transmedics positions in Q2 2026 and 106 closed out, a net change of -38 holders.
- The largest Transmedics buyer in Q2 2026 was Citadel Advisors, an estimated $42.1M added.
- The largest Transmedics seller in Q2 2026 was Invesco, an estimated $54.4M sold.
Based on aggregated 13F filings for Q2 2026.