Pulse Biosciences
PLSE
84 hedge funds and large institutions have $91.7M invested in Pulse Biosciences in 2025 Q1 according to their latest regulatory filings, with 17 funds opening new positions, 23 increasing their positions, 29 reducing their positions, and 6 closing their positions.
183% more first-time investments, than exits
New positions opened: 17 | Existing positions closed: 6
44% more call options, than puts
Call options by funds: $1.49M | Put options by funds: $1.03M
15% more funds holding
Funds holding: 73 → 84 (+11)
0.44% less ownership
Funds ownership: 9.7% → 9.26% (-0.44%)
12% less capital invested
Capital invested by funds: $104M → $91.7M (-$12.2M)
21% less repeat investments, than reductions
Existing positions increased: 23 | Existing positions reduced: 29
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$1.61M |
| 2 |
Renaissance Technologies
New York
|
+$1.26M |
| 3 |
Squarepoint
New York
|
+$958K |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$507K |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$479K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
-$5.65M |
| 2 |
Invesco
Atlanta,
Georgia
|
-$3.73M |
| 3 |
State Street
Boston,
Massachusetts
|
-$1.03M |
| 4 |
BlackRock
New York
|
-$396K |
| 5 |
Swiss National Bank
Zurich,
Switzerland
|
-$226K |
PLSE Hedge Fund Activity: Q1 2025 in Review
84 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Pulse Biosciences (PLSE) for Q1 2025, worth a combined $91.7M — down 12% from $104M a quarter earlier.
Buyers outnumbered sellers: 17 funds opened new PLSE positions and 6 closed out — a net gain of 11 holders — while 23 added to existing stakes and 29 trimmed.
The largest buyer was Millennium Management, opening a new position worth an estimated $1.61M. The largest seller was Vanguard Group, cutting an estimated $5.65M.
- 84 institutional investors held Pulse Biosciences (PLSE) as of Q1 2025, up from 73 in Q4 2024.
- Funds reported $91.7M of Pulse Biosciences stock for Q1 2025, down 12% quarter-over-quarter.
- 17 funds opened new Pulse Biosciences positions in Q1 2025 and 6 closed out, a net change of +11 holders.
- The largest Pulse Biosciences buyer in Q1 2025 was Millennium Management, an estimated $1.61M added.
- The largest Pulse Biosciences seller in Q1 2025 was Vanguard Group, an estimated $5.65M sold.
Based on aggregated 13F filings for Q1 2025.