Transmedics
TMDX
299 hedge funds and large institutions have $2.63B invested in Transmedics in 2025 Q1 according to their latest regulatory filings, with 51 funds opening new positions, 122 increasing their positions, 91 reducing their positions, and 63 closing their positions.
34% more repeat investments, than reductions
Existing positions increased: 122 | Existing positions reduced: 91
30% more call options, than puts
Call options by funds: $70.5M | Put options by funds: $54.1M
14% more capital invested
Capital invested by funds: $2.3B → $2.63B (+$329M)
6.14% more ownership
Funds ownership: 109.88% → 116.01% (+6.1%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
5% less funds holding
Funds holding: 314 → 299 (-15)
19% less first-time investments, than exits
New positions opened: 51 | Existing positions closed: 63
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS AM
Chicago,
Illinois
|
+$152M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$68.1M |
| 3 |
HRCM
Hood River Capital Management
Palm Beach Gardens,
Florida
|
+$54.7M |
| 4 |
BCM
Brown Capital Management
Baltimore,
Maryland
|
+$32.2M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$25.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Mackenzie Financial
Toronto Ontario,
Ontario, Canada
|
-$51.6M |
| 2 |
Man Group
London,
United Kingdom
|
-$24.7M |
| 3 |
VNIM
Vaughan Nelson Investment Management
Houston,
Texas
|
-$22.5M |
| 4 |
Norges Bank
Oslo,
Norway
|
-$22.4M |
| 5 |
Voloridge Investment Management
Jupiter,
Florida
|
-$18.6M |
TMDX Hedge Fund Activity: Q1 2025 in Review
299 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Transmedics (TMDX) for Q1 2025, worth a combined $2.63B — up 14% from $2.3B a quarter earlier.
Sellers outnumbered buyers: 63 funds closed out of TMDX and 51 opened new positions — a net loss of 12 holders — while 91 trimmed existing stakes and 122 added.
The largest buyer was UBS AM, adding an estimated $152M. The largest seller was Mackenzie Financial, exiting entirely with an estimated $51.6M sold.
- 299 institutional investors held Transmedics (TMDX) as of Q1 2025, down from 314 in Q4 2024.
- Funds reported $2.63B of Transmedics stock for Q1 2025, up 14% quarter-over-quarter.
- 51 funds opened new Transmedics positions in Q1 2025 and 63 closed out, a net change of -12 holders.
- The largest Transmedics buyer in Q1 2025 was UBS AM, an estimated $152M added.
- The largest Transmedics seller in Q1 2025 was Mackenzie Financial, an estimated $51.6M sold.
Based on aggregated 13F filings for Q1 2025.