Butterfly Network
BFLY
203 hedge funds and large institutions have $452M invested in Butterfly Network in 2025 Q4 according to their latest regulatory filings, with 48 funds opening new positions, 71 increasing their positions, 42 reducing their positions, and 18 closing their positions.
507% more call options, than puts
Call options by funds: $19.7M | Put options by funds: $3.24M
167% more first-time investments, than exits
New positions opened: 48 | Existing positions closed: 18
140% more capital invested
Capital invested by funds: $188M → $452M (+$264M)
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
69% more repeat investments, than reductions
Existing positions increased: 71 | Existing positions reduced: 42
15% more funds holding
Funds holding: 176 → 203 (+27)
8.99% more ownership
Funds ownership: 43.59% → 52.58% (+9%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GCM
Glenview Capital Management
New York
|
+$11.9M |
| 2 |
AIC
AWM Investment Company
New York
|
+$8.16M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
+$6.26M |
| 4 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$4.58M |
| 5 |
Millennium Management
New York
|
+$4.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$5.98M |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$2.75M |
| 3 |
State Street
Boston,
Massachusetts
|
-$1.59M |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$1.53M |
| 5 |
PHP
Parkman Healthcare Partners
Stamford,
Connecticut
|
-$1.36M |
BFLY Hedge Fund Activity: Q4 2025 in Review
203 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Butterfly Network (BFLY) for Q4 2025, worth a combined $452M — up 140% from $188M a quarter earlier.
Buyers outnumbered sellers: 48 funds opened new BFLY positions and 18 closed out — a net gain of 30 holders — while 71 added to existing stakes and 42 trimmed.
The largest buyer was Glenview Capital Management, adding an estimated $11.9M. The largest seller was Citadel Advisors, cutting an estimated $5.98M.
- 203 institutional investors held Butterfly Network (BFLY) as of Q4 2025, up from 176 in Q3 2025.
- Funds reported $452M of Butterfly Network stock for Q4 2025, up 140% quarter-over-quarter.
- 48 funds opened new Butterfly Network positions in Q4 2025 and 18 closed out, a net change of +30 holders.
- The largest Butterfly Network buyer in Q4 2025 was Glenview Capital Management, an estimated $11.9M added.
- The largest Butterfly Network seller in Q4 2025 was Citadel Advisors, an estimated $5.98M sold.
Based on aggregated 13F filings for Q4 2025.