Cabaletta BioCABA
13F holders, Q1 2026 (March 31)108holders +13
24new positions
12sold out
4famous investors
$2.69avg. 13F price*
At the end of Q1 2026, 108 institutions reported holding Cabaletta Bio Inc. (CABA) in their 13F filings, up 13 from Q4 2025. 24 opened new positions and 12 sold out. The largest holders were T. Rowe Price Investment Management, Inc. ($29.8M), Bain Capital Life Sciences Investors, LLC ($26.0M) and Jennison Associates LLC ($24.1M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Cabaletta Bio Inc.
- CUSIP
- 12674W109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 24 | $5.7M |
| Exits | 12 | $1.8M |
All 13F filers, Q4 2025 → Q1 2026: 14,143,694 shares bought and 5,191,944 shares sold, net +8,951,750 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 108 holders
| T. Rowe Price Investment Management, Inc. | 0.02% | Add +12.4% | 11,080,005 | $29.8M |
| Bain Capital Life Sciences Investors, LLC | 2.35% | No change | 9,677,125 | $26.0M |
| Jennison Associates LLC | 0.02% | Add +0.7% | 8,970,578 | $24.1M |
| Adage Capital Partners Gp, L.L.C. | 0.04% | No change | 8,829,758 | $23.8M |
| Millennium Management | 0.01% | Add +115.7% | 5,903,281 | $15.9M |
| Cormorant Asset Management, LP | 0.75% | Add +25.0% | 5,500,000 | $14.8M |
| Vanguard Capital Management LLC | 0.00% | — | 4,028,991 | $10.8M |
| Two Sigma Investments, LP | 0.01% | Add +35.8% | 2,497,917 | $6.7M |
| BlackRock, Inc. | 0.00% | Add +1.9% | 2,373,003 | $6.4M |
| Marshall Wace, LLP | 0.01% | Add +127.3% | 2,179,818 | $5.9M |
| Renaissance Technologies | 0.01% | Add +33.8% | 2,036,663 | $5.5M |
| Qube Research & Technologies Ltd | 0.01% | Add +484.2% | 1,934,990 | $5.2M |
| Morgan Stanley | 0.00% | Add +4.8% | 1,408,152 | $3.8M |
| Opaleye Management Inc. | 0.49% | Add +53.3% | 1,380,000 | $3.7M |
| Woodline Partners LP | 0.01% | No change | 1,250,242 | $3.4M |
| Geode Capital Management, LLC | 0.00% | Add +4.4% | 1,133,245 | $3.0M |
| Superstring Capital Management LP | 2.05% | Reduce -52.7% | 1,066,239 | $2.9M |
| Ikarian Capital, LLC | 0.35% | No change | 900,000 | $2.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +81.9% | 783,220 | $2.1M |
| Cantor Fitzgerald, L. P. | 0.07% | New | 765,000 | $2.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +63.9% | 740,648 | $2.0M |
| Burkehill Global Management, LP | 0.10% | No change | 700,000 | $1.9M |
| Schroder Investment Management Group | 0.00% | No change | 756,637 | $1.9M |
| UBS Group AG | 0.00% | Add +46.0% | 606,664 | $1.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 570,191 | $1.5M |
| Gsa Capital Partners LLP | 0.09% | Add +84.8% | 561,726 | $1.5M |
| KVP Capital Advisors, LP | 1.02% | No change | 505,431 | $1.4M |
| State Street Corp. | 0.00% | Add +10.5% | 469,978 | $1.3M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -59.6% | 442,277 | $1.2M |
| Raiffeisen Bank International AG | 0.02% | No change | 450,000 | $1.1M |
| Almitas Capital LLC | 0.21% | Reduce -12.9% | 337,391 | $908K |
| Bank of America Corp. | 0.00% | Add +1770.9% | 269,257 | $724K |
| Bridgeway Capital Management, LLC | 0.01% | Add +104.6% | 267,372 | $719K |
| Diametric Capital, LP | 0.19% | New | 262,831 | $707K |
| Jane Street Group, LLC | 0.00% | Reduce -62.5% | 248,594 | $669K |
| Wellington Management Group LLP | 0.00% | New | 247,659 | $666K |
| Point72 Asset Management | 0.00% | Add +335.4% | 246,615 | $663K |
| Boothbay Fund Management, LLC | 0.02% | No change | 243,445 | $655K |
| Northern Trust Corp. | 0.00% | No change | 238,442 | $641K |
| 683 Capital Management, LLC | 0.06% | Reduce -42.1% | 225,000 | $605K |
| Invesco Ltd. | 0.00% | Add +1.7% | 192,383 | $518K |
| D. E. Shaw & Co. | 0.00% | New | 189,412 | $510K |
| Hudson Bay Capital Management LP | 0.00% | Add +16.6% | 161,726 | $435K |
| Brevan Howard Capital Management LP | 0.00% | New | 149,721 | $403K |
| Squarepoint Ops LLC | 0.00% | Reduce -3.0% | 144,681 | $389K |
| American Century Companies Inc. | 0.00% | Add +84.3% | 108,319 | $291K |
| ExodusPoint Capital Management, LP | 0.00% | New | 105,985 | $285K |
| Graham Capital Management, L.P. | 0.01% | Reduce -32.9% | 101,688 | $274K |
| Barclays PLC | 0.00% | Reduce -55.7% | 97,792 | $263K |
| Nomura Holdings Inc. | 0.00% | New | 95,512 | $257K |
| Letko, Brosseau & Associates Inc. | 0.00% | No change | 90,475 | $243K |
| Quadrature Capital Ltd | 0.00% | Add +31.2% | 87,060 | $234K |
| LPL Financial LLC | 0.00% | Add +63.3% | 69,575 | $187K |
| TD Asset Management Inc | 0.00% | Reduce -24.5% | 66,924 | $180K |
| Matauro, LLC | 0.02% | No change | 55,108 | $148K |
| Bank of New York Mellon Corp | 0.00% | Add +0.5% | 54,299 | $146K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -43.3% | 54,100 | $146K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 50,824 | $137K |
| Stonepine Capital Management, LLC | 0.12% | Reduce -70.8% | 50,000 | $135K |
| Prelude Capital Management, LLC | 0.01% | New | 43,416 | $117K |
| Virtu Financial LLC | 0.00% | New | 38,703 | $104K |
| Vanguard Global Advisers, LLC | 0.00% | — | 35,751 | $96K |
| Jefferies Financial Group Inc. | 0.00% | Reduce -25.9% | 33,442 | $90K |
| HRT Financial LP | 0.00% | New | 33,104 | $89K |
| Axq Capital, LP | 0.01% | New | 28,938 | $78K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -97.7% | 28,172 | $76K |
| Citigroup Inc. | 0.00% | Reduce -62.8% | 27,473 | $74K |
| Mercer Global Advisors Inc. | 0.00% | No change | 26,510 | $71K |
| Fred Alger Management, LLC | 0.00% | Reduce -17.4% | 23,157 | $62K |
| Catalyst Funds Management Pty Ltd | 0.01% | New | 21,300 | $57K |
| Grey Ledge Advisors, LLC | 0.01% | New | 20,000 | $54K |
| Raymond James Financial Inc. | 0.00% | New | 19,769 | $53K |
| Clear Harbor Asset Management, LLC | 0.00% | No change | 19,500 | $52K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Reduce -13.4% | 19,390 | $52K |
| Private Advisor Group, LLC | 0.00% | Add +22.4% | 18,025 | $48K |
| Susquehanna Portfolio Strategies, LLC | 0.00% | New | 17,595 | $47K |
| Callan Family Office, LLC | 0.00% | Reduce -22.8% | 17,434 | $47K |
| China Universal Asset Management Co., Ltd. | 0.00% | Add +8.9% | 17,083 | $46K |
| Jump Financial, LLC | 0.00% | New | 16,700 | $45K |
| WINTON GROUP Ltd | 0.00% | New | 15,300 | $41K |
| CRA Financial Services, LLC | 0.01% | No change | 15,000 | $40K |
| FMR LLC | 0.00% | Reduce -0.4% | 12,991 | $35K |
| SummitTX Capital, L.P. | 0.00% | New | 12,522 | $34K |
| XTX Topco Ltd | 0.00% | Reduce -92.0% | 12,512 | $34K |
| Kestra Advisory Services, LLC | 0.00% | New | 11,750 | $32K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -78.4% | 11,154 | $30K |
| Dynamic Technology Lab Private Ltd | 0.00% | Reduce -83.9% | 10,777 | $29K |
| JPMorgan Chase & Co. | 0.00% | Reduce -26.5% | 7,206 | $18K |
| Quadrant Capital Group LLC | 0.00% | New | 6,495 | $17K |
| Wells Fargo & Company | 0.00% | Add +200.0% | 6,000 | $16K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -80.9% | 5,784 | $16K |
| ANTIPODES PARTNERS Ltd | 0.00% | Reduce -67.3% | 5,616 | $15K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +7.3% | 5,021 | $14K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 4,600 | $12K |
| Osaic Holdings, Inc. | 0.00% | New | 2,907 | $8K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.6% | 2,149 | $6K |
| Rockefeller Capital Management L.P. | 0.00% | New | 2,000 | $5K |
| BNP Paribas Financial Markets | 0.00% | Reduce -4.3% | 1,569 | $4K |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 1,322 | $4K |
| Russell Investments Group, Ltd. | 0.00% | No change | 939 | $3K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 811 | $2K |
| Royal Bank of Canada | 0.00% | Add +535.0% | 781 | $2K |
| Jones Financial Companies LLLP | 0.00% | Reduce -96.8% | 653 | $2K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 340 | $915 |
| SBI Securities Co., Ltd. | 0.00% | No change | 316 | $850 |
| Fortitude Family Office, LLC | 0.00% | New | 163 | $438 |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 60 | $161 |
| Arax Advisory Partners | 0.00% | Reduce -80.0% | 2 | $27 |
"% of holder's portfolio" is CABA's weight in each manager's 13F, not the share of Cabaletta Bio Inc. the manager owns.