Cabaletta Bio
CABA
75 hedge funds and large institutions have $162M invested in Cabaletta Bio in 2025 Q3 according to their latest regulatory filings, with 10 funds opening new positions, 24 increasing their positions, 31 reducing their positions, and 21 closing their positions.
5,676% more call options, than puts
Call options by funds: $5.26M | Put options by funds: $91K
46% more capital invested
Capital invested by funds: $111M → $162M (+$51.3M)
13% less funds holding
Funds holding: 86 → 75 (-11)
23% less repeat investments, than reductions
Existing positions increased: 24 | Existing positions reduced: 31
52% less first-time investments, than exits
New positions opened: 10 | Existing positions closed: 21
67.73% less ownership
Funds ownership: 143.4% → 75.67% (-68%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jennison Associates
New York
|
+$4.25M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$2.69M |
| 3 |
Renaissance Technologies
New York
|
+$2.08M |
| 4 |
Marshall Wace
London,
United Kingdom
|
+$1.95M |
| 5 |
WP
Woodline Partners
San Francisco,
California
|
+$1.57M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$6.01M |
| 2 |
JFG
Jefferies Financial Group
New York
|
-$3.35M |
| 3 |
AFM
Anson Funds Management
Dallas,
Texas
|
-$2.77M |
| 4 |
BGM
Burkehill Global Management
New York
|
-$2.06M |
| 5 |
HCM
Heights Capital Management
San Francisco,
California
|
-$1.82M |
CABA Hedge Fund Activity: Q3 2025 in Review
75 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Cabaletta Bio (CABA) for Q3 2025, worth a combined $162M — up 46% from $111M a quarter earlier.
Sellers outnumbered buyers: 21 funds closed out of CABA and 10 opened new positions — a net loss of 11 holders — while 31 trimmed existing stakes and 24 added.
The largest buyer was Jennison Associates, adding an estimated $4.25M. The largest seller was Alyeska Investment Group, cutting an estimated $6.01M.
- 75 institutional investors held Cabaletta Bio (CABA) as of Q3 2025, down from 86 in Q2 2025.
- Funds reported $162M of Cabaletta Bio stock for Q3 2025, up 46% quarter-over-quarter.
- 10 funds opened new Cabaletta Bio positions in Q3 2025 and 21 closed out, a net change of -11 holders.
- The largest Cabaletta Bio buyer in Q3 2025 was Jennison Associates, an estimated $4.25M added.
- The largest Cabaletta Bio seller in Q3 2025 was Alyeska Investment Group, an estimated $6.01M sold.
Based on aggregated 13F filings for Q3 2025.