Alpha Tau Medical
DRTS
31 hedge funds and large institutions have $8.26M invested in Alpha Tau Medical in 2025 Q3 according to their latest regulatory filings, with 9 funds opening new positions, 7 increasing their positions, 4 reducing their positions, and 2 closing their positions.
350% more first-time investments, than exits
New positions opened: 9 | Existing positions closed: 2
75% more repeat investments, than reductions
Existing positions increased: 7 | Existing positions reduced: 4
67% more capital invested
Capital invested by funds: $4.95M → $8.26M (+$3.31M)
29% more funds holding
Funds holding: 24 → 31 (+7)
0.29% more ownership
Funds ownership: 1.87% → 2.16% (+0.29%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Mariner
Overland Park,
Kansas
|
+$273K |
| 2 |
SF
Summit Financial
Parsippany,
New Jersey
|
+$176K |
| 3 |
Millennium Management
New York
|
+$128K |
| 4 |
Renaissance Technologies
New York
|
+$111K |
| 5 |
Bank of America
Charlotte,
North Carolina
|
+$73.8K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AI
Atom Investors
Austin,
Texas
|
-$80.4K |
| 2 |
Northern Trust
Chicago,
Illinois
|
-$40.2K |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$20K |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$9.19K |
| 5 |
Kovitz Investment Group Partners
Chicago,
Illinois
|
-$5.46K |
DRTS Hedge Fund Activity: Q3 2025 in Review
31 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in Alpha Tau Medical (DRTS) for Q3 2025, worth a combined $8.26M — up 67% from $4.95M a quarter earlier.
Buyers outnumbered sellers: 9 funds opened new DRTS positions and 2 closed out — a net gain of 7 holders — while 7 added to existing stakes and 4 trimmed.
The largest buyer was Mariner, adding an estimated $273K. The largest seller was Atom Investors, exiting entirely with an estimated $80.4K sold.
- 31 institutional investors held Alpha Tau Medical (DRTS) as of Q3 2025, up from 24 in Q2 2025.
- Funds reported $8.26M of Alpha Tau Medical stock for Q3 2025, up 67% quarter-over-quarter.
- 9 funds opened new Alpha Tau Medical positions in Q3 2025 and 2 closed out, a net change of +7 holders.
- The largest Alpha Tau Medical buyer in Q3 2025 was Mariner, an estimated $273K added.
- The largest Alpha Tau Medical seller in Q3 2025 was Atom Investors, an estimated $80.4K sold.
Based on aggregated 13F filings for Q3 2025.