Transmedics
TMDX
369 hedge funds and large institutions have $4.93B invested in Transmedics in 2025 Q2 according to their latest regulatory filings, with 104 funds opening new positions, 117 increasing their positions, 114 reducing their positions, and 31 closing their positions.
400% more funds holding in top 10
Funds holding in top 10: 1 → 5 (+4)
235% more first-time investments, than exits
New positions opened: 104 | Existing positions closed: 31
55% more call options, than puts
Call options by funds: $190M | Put options by funds: $123M
23% more funds holding
Funds holding: 299 → 369 (+70)
3% more repeat investments, than reductions
Existing positions increased: 117 | Existing positions reduced: 114
7.29% less ownership
Funds ownership: 116.02% → 108.72% (-7.3%)
35% less capital inflows, than outflows
Capital inflows: $425M | Capital outflows: $653M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
+$43.3M |
| 2 |
Two Sigma Investments
New York
|
+$42.7M |
| 3 |
Two Sigma Advisers
New York
|
+$30.2M |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$30.1M |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$20.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS AM
Chicago,
Illinois
|
-$237M |
| 2 |
Braidwell
Stamford,
Connecticut
|
-$65.9M |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$49.8M |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$29.1M |
| 5 |
Capital Fund Management (CFM)
Paris,
France
|
-$24.8M |
TMDX Hedge Fund Activity: Q2 2025 in Review
369 of the 7,627 institutional investors tracked by Wall St. Rank reported a position in Transmedics (TMDX) for Q2 2025, worth a combined $4.93B — up 87% from $2.63B a quarter earlier.
Buyers outnumbered sellers: 104 funds opened new TMDX positions and 31 closed out — a net gain of 73 holders — while 117 added to existing stakes and 114 trimmed.
The largest buyer was Marshall Wace, adding an estimated $43.3M. The largest seller was UBS AM, cutting an estimated $237M.
- 369 institutional investors held Transmedics (TMDX) as of Q2 2025, up from 299 in Q1 2025.
- Funds reported $4.93B of Transmedics stock for Q2 2025, up 87% quarter-over-quarter.
- 104 funds opened new Transmedics positions in Q2 2025 and 31 closed out, a net change of +73 holders.
- The largest Transmedics buyer in Q2 2025 was Marshall Wace, an estimated $43.3M added.
- The largest Transmedics seller in Q2 2025 was UBS AM, an estimated $237M sold.
Based on aggregated 13F filings for Q2 2025.