Caribou Biosciences
CRBU
129 hedge funds and large institutions have $51.9M invested in Caribou Biosciences in 2025 Q2 according to their latest regulatory filings, with 34 funds opening new positions, 28 increasing their positions, 42 reducing their positions, and 36 closing their positions.
49% more call options, than puts
Call options by funds: $170K | Put options by funds: $114K
12% more capital invested
Capital invested by funds: $46.5M → $51.9M (+$5.47M)
6% less first-time investments, than exits
New positions opened: 34 | Existing positions closed: 36
2% less funds holding
Funds holding: 131 → 129 (-2)
10.21% less ownership
Funds ownership: 54.03% → 43.83% (-10%)
33% less repeat investments, than reductions
Existing positions increased: 28 | Existing positions reduced: 42
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$718K |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$565K |
| 3 |
Renaissance Technologies
New York
|
+$523K |
| 4 |
Aberdeen Group
Edinburgh,
United Kingdom
|
+$478K |
| 5 |
P
&Partners
Nashville,
Tennessee
|
+$331K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
-$4.39M |
| 2 |
State Street
Boston,
Massachusetts
|
-$1.26M |
| 3 |
PHS
PFM Health Sciences
San Francisco,
California
|
-$1.13M |
| 4 |
Geode Capital Management
Boston,
Massachusetts
|
-$1.06M |
| 5 |
JP Morgan Chase
New York
|
-$791K |
CRBU Hedge Fund Activity: Q2 2025 in Review
129 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Caribou Biosciences (CRBU) for Q2 2025, worth a combined $51.9M — up 12% from $46.5M a quarter earlier.
Sellers outnumbered buyers: 36 funds closed out of CRBU and 34 opened new positions — a net loss of 2 holders — while 42 trimmed existing stakes and 28 added.
The largest buyer was Millennium Management, adding an estimated $718K. The largest seller was BlackRock, cutting an estimated $4.39M.
- 129 institutional investors held Caribou Biosciences (CRBU) as of Q2 2025, down from 131 in Q1 2025.
- Funds reported $51.9M of Caribou Biosciences stock for Q2 2025, up 12% quarter-over-quarter.
- 34 funds opened new Caribou Biosciences positions in Q2 2025 and 36 closed out, a net change of -2 holders.
- The largest Caribou Biosciences buyer in Q2 2025 was Millennium Management, an estimated $718K added.
- The largest Caribou Biosciences seller in Q2 2025 was BlackRock, an estimated $4.39M sold.
Based on aggregated 13F filings for Q2 2025.