Pulse Biosciences
PLSE
96 hedge funds and large institutions have $168M invested in Pulse Biosciences in 2026 Q1 according to their latest regulatory filings, with 33 funds opening new positions, 27 increasing their positions, 23 reducing their positions, and 15 closing their positions.
466% more call options, than puts
Call options by funds: $1.5M | Put options by funds: $266K
120% more first-time investments, than exits
New positions opened: 33 | Existing positions closed: 15
93% more capital invested
Capital invested by funds: $86.9M → $168M (+$80.7M)
17% more repeat investments, than reductions
Existing positions increased: 27 | Existing positions reduced: 23
17% more funds holding
Funds holding: 82 → 96 (+14)
2.09% more ownership
Funds ownership: 9.33% → 11.42% (+2.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Massachusetts Financial Services
Boston,
Massachusetts
|
+$8.54M |
| 2 |
PCM
Portolan Capital Management
Boston,
Massachusetts
|
+$6.27M |
| 3 |
Balyasny Asset Management
Chicago,
Illinois
|
+$4.89M |
| 4 |
LP
LMR Partners
London,
United Kingdom
|
+$3.93M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$1.86M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BIG
Brooklyn Investment Group
Brooklyn,
New York
|
-$2.21M |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$774K |
| 3 |
Barclays
London,
United Kingdom
|
-$449K |
| 4 |
Tudor Investment Corp
Stamford,
Connecticut
|
-$382K |
| 5 |
TIAA Trust, National Association
Charlotte,
North Carolina
|
-$375K |
PLSE Hedge Fund Activity: Q1 2026 in Review
96 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Pulse Biosciences (PLSE) for Q1 2026, worth a combined $168M — up 93% from $86.9M a quarter earlier.
Buyers outnumbered sellers: 33 funds opened new PLSE positions and 15 closed out — a net gain of 18 holders — while 27 added to existing stakes and 23 trimmed.
The largest buyer was Massachusetts Financial Services, opening a new position worth an estimated $8.54M. The largest seller was Brooklyn Investment Group, cutting an estimated $2.21M.
- 96 institutional investors held Pulse Biosciences (PLSE) as of Q1 2026, up from 82 in Q4 2025.
- Funds reported $168M of Pulse Biosciences stock for Q1 2026, up 93% quarter-over-quarter.
- 33 funds opened new Pulse Biosciences positions in Q1 2026 and 15 closed out, a net change of +18 holders.
- The largest Pulse Biosciences buyer in Q1 2026 was Massachusetts Financial Services, an estimated $8.54M added.
- The largest Pulse Biosciences seller in Q1 2026 was Brooklyn Investment Group, an estimated $2.21M sold.
Based on aggregated 13F filings for Q1 2026.