CABA in the 13F filings
Cabaletta Bio Inc · CUSIP 12674W109
- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 2 Sep 2026
- latest of these filings; the earliest 7 Aug 2026
- Managers listing it
- 15
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 0 listed it in both
- Shares listed
- 19,591,792
- combined, among listed positions
- Reported value
- $61m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 10 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,527,201.
Managers listing CABA in Q2 2026
15 of 15 holders
Largest increases and reductions, by shares
Increases
- T. Rowe Price Associates Incexisting position · 4,418,674 shares now+3,976,397
- Citadel Advisors LLCnew position · 3,522,112 shares now+3,522,112
- Woodline Partners LPexisting position · 4,200,142 shares now+2,949,900
- AllianceBernstein LPnew position · 108,410 shares now+108,410
- Susquehanna International Group LLPnew position · 63,228 shares now+63,228
Reductions
- Millennium Management LLCexisting position · 2,068,491 shares now-3,834,790
- Two Sigma Investments LPexisting position · 1,410,931 shares now-1,086,986
- Marshall Wace LLPexisting position · 1,565,939 shares now-613,879
- Renaissance Technologies LLCexisting position · 1,535,300 shares now-501,363
- D. E. Shaw & Co.existing position · 90,652 shares now-98,760
New positions and exits
New (4)
Exited (8)
- Jane Street Group LLCwas $669k
- Point72 Asset Management LPwas $663k
- Hudson Bay Capital Management LPwas $435k
- Brevan Howard Capital Management LPwas $403k
- Squarepoint Ops LLCwas $389k
- ExodusPoint Capital Management LPwas $285k
- Schonfeld Strategic Advisors LLCwas $76k
- Balyasny Asset Management LLCwas $30k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2021 | 1 | $11m | n.a. | n.a. |
| Q2 2023 | 1 | $2.3m | n.a. | n.a. |
| Q3 2023 | 3 | $23m | n.a. | n.a. |
| Q4 2023 | 4 | $57m | 3 | 1 |
| Q1 2024 | 2 | $9.9m | 2 | 1 |
| Q2 2024 | 2 | $4.3m | 1 | 1 |
| Q2 2026 | 1 | $13m | 10 | 13 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
CABA and GILD →CABA and AMGN →CABA and ARGX →Choose a stock to compare with CABA →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own CABA, latest filings →Back to the 13F Explorer →