Transmedics
TMDX
375 hedge funds and large institutions have $2.31B invested in Transmedics in 2026 Q2 according to their latest regulatory filings, with 69 funds opening new positions, 138 increasing their positions, 125 reducing their positions, and 107 closing their positions.
10% more repeat investments, than reductions
Existing positions increased: 138 | Existing positions reduced: 125
5.6% less ownership
Funds ownership: 106.3% → 100.71% (-5.6%)
10% less funds holding
Funds holding: 416 → 375 (-41)
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: 69 | Existing positions closed: 107
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
375 of the 8,350 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: 107 funds closed out of TMDX and 69 opened new positions — a net loss of 38 holders — while 125 trimmed existing stakes and 138 added.
The largest buyer was Citadel Advisors, adding an estimated $42.1M. The largest seller was Invesco, cutting an estimated $54.4M.
- 375 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.
- 69 funds opened new Transmedics positions in Q2 2026 and 107 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.