Cabaletta Bio, Inc. - CABA
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 6 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bain Capital Life Sciences Investors, LLC | History | No change | 9,677,125 | 21,192 | 1.62% | 1.5% | 1 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| JENNISON ASSOCIATES LLC | History | Added to | 8,905,699 | 19,503 | 0.01% | 0.01% | 2 | +408,162 | 4.8% | Q4 2025 | Jan 30, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | History | No change | 8,829,758 | 19,337 | 0.03% | 0.03% | 3 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| VANGUARD GROUP INC | History | Added to | 4,419,458 | 9,678 | 0.0% | 0.0% | 4 | +228,699 | 5.46% | Q4 2025 | Jan 29, 2026 |
| Cormorant Asset Management, LP | History | Reduced | 4,400,000 | 9,636 | 0.45% | 0.81% | 5 | -600,000 | -12.0% | Q4 2025 | Feb 17, 2026 |
| T. Rowe Price Investment Management, Inc. | History | Reduced | 4,004,046 | 8,769 | 0.01% | 0.01% | 6 | -4,358,443 | -52.12% | Q4 2025 | Feb 19, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 2,736,912 | 5,993 | 0.0% | 0.0% | 7 | +2,050,099 | 298.49% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 2,328,470 | 5,099 | 0.0% | 0.0% | 8 | +707,598 | 43.66% | Q4 2025 | Feb 12, 2026 |
| SUPERSTRING CAPITAL MANAGEMENT LP | History | Added to | 2,253,550 | 4,935 | 2.64% | 3.56% | 9 | +709,025 | 45.91% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 1,839,799 | 4,029 | 0.01% | 0.0% | 10 | +1,369,324 | 291.05% | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 1,522,583 | 3,334 | 0.01% | 0.0% | 11 | +183,160 | 13.67% | Q4 2025 | Feb 12, 2026 |
| MORGAN STANLEY | History | Reduced | 1,343,708 | 2,942 | 0.0% | 0.0% | 12 | -130,968 | -8.88% | Q4 2025 | Feb 13, 2026 |
| Woodline Partners LP | History | Reduced | 1,250,242 | 2,738 | 0.01% | 0.02% | 13 | -885,106 | -41.45% | Q4 2025 | Feb 17, 2026 |
| Schonfeld Strategic Advisors LLC | History | Added to | 1,204,070 | 2,636 | 0.01% | 0.01% | 14 | +159,901 | 15.31% | Q4 2025 | Feb 17, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | Reduced | 1,093,959 | 2,397 | 0.0% | 0.0% | 15 | -200,990 | -15.52% | Q4 2025 | Feb 17, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 1,085,816 | 2,378 | 0.0% | 0.0% | 16 | +165,476 | 17.98% | Q4 2025 | Feb 09, 2026 |
| MARSHALL WACE, LLP | History | Reduced | 959,076 | 2,100 | 0.0% | 0.0% | 17 | -366,967 | -27.67% | Q4 2025 | Feb 13, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 907,681 | 1,987 | 0.0% | 0.0% | 18 | +103,573 | 12.88% | Q4 2025 | Feb 17, 2026 |
| Ikarian Capital, LLC | History | New | 900,000 | 1,971 | 0.15% | — | 20 | +900,000 | New | Q4 2025 | Feb 18, 2026 |
| Opaleye Management Inc. | History | Added to | 900,000 | 1,971 | 0.26% | 0.27% | 19 | +91,118 | 11.26% | Q4 2025 | Apr 13, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 841,249 | 1,842 | 0.0% | 0.0% | 21 | +546,387 | 185.3% | Q4 2025 | Feb 12, 2026 |
| SCHRODER INVESTMENT MANAGEMENT GROUP | History | New | 756,637 | 1,626 | 0.0% | — | 22 | +756,637 | New | Q4 2025 | Feb 13, 2026 |
| TWO SIGMA ADVISERS, LP | History | Added to | 737,900 | 1,616 | 0.0% | 0.0% | 23 | +406,900 | 122.93% | Q4 2025 | Feb 17, 2026 |
| Burkehill Global Management, LP | History | No change | 700,000 | 1,533 | 0.1% | 0.09% | 24 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 677,174 | 1,483 | 0.0% | 0.0% | 25 | +404,578 | 148.42% | Q4 2025 | Mar 25, 2026 |
| Ensign Peak Advisors, Inc | History | New | 550,000 | 1,204 | 0.0% | — | 26 | +550,000 | New | Q4 2025 | Feb 12, 2026 |
| KVP Capital Advisors, LP | History | New | 505,431 | 1,106 | 1.07% | — | 27 | +505,431 | New | Q4 2025 | Feb 18, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | New | 452,039 | 989 | 0.0% | — | 28 | +452,039 | New | Q4 2025 | Feb 12, 2026 |
| Raiffeisen Bank International AG | History | Added to | 450,000 | 967 | 0.01% | 0.01% | 29 | +100,000 | 28.57% | Q4 2025 | Feb 12, 2026 |
| STATE STREET CORP | History | Added to | 425,478 | 931 | 0.0% | 0.0% | 30 | +48,678 | 12.92% | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Added to | 415,677 | 910 | 0.0% | 0.0% | 31 | +10,557 | 2.61% | Q4 2025 | Jan 29, 2026 |
| 683 Capital Management, LLC | History | New | 388,562 | 850 | 0.04% | — | 32 | +388,562 | New | Q4 2025 | Feb 17, 2026 |
| Almitas Capital LLC | History | No change | 387,491 | 848 | 0.19% | 0.21% | 33 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Qube Research & Technologies Ltd | History | Added to | 331,225 | 725 | 0.0% | 0.0% | 34 | +242,068 | 271.51% | Q4 2025 | Feb 17, 2026 |
| GSA CAPITAL PARTNERS LLP | History | New | 303,992 | 666 | 0.06% | — | 35 | +303,992 | New | Q4 2025 | Feb 06, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 256,102 | 560 | 0.0% | 0.0% | 36 | -694,163 | -73.05% | Q4 2025 | Feb 17, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | New | 243,445 | 533 | 0.01% | — | 37 | +243,445 | New | Q4 2025 | Feb 17, 2026 |
| NORTHERN TRUST CORP | History | Added to | 238,442 | 522 | 0.0% | 0.0% | 38 | +11,455 | 5.05% | Q4 2025 | Feb 17, 2026 |
| BARCLAYS PLC | History | Added to | 220,696 | 483 | 0.0% | 0.0% | 39 | +217,613 | 7058.48% | Q4 2025 | Feb 13, 2026 |
| Invesco Ltd. | History | Added to | 189,195 | 414 | 0.0% | 0.0% | 40 | +66,395 | 54.07% | Q4 2025 | Feb 19, 2026 |
| Stonepine Capital Management, LLC | History | New | 171,100 | 374 | 0.27% | — | 41 | +171,100 | New | Q4 2025 | Feb 13, 2026 |
| XTX Topco Ltd | History | Reduced | 155,387 | 340 | 0.01% | 0.03% | 42 | -128,912 | -45.34% | Q4 2025 | Feb 17, 2026 |
| Graham Capital Management, L.P. | History | New | 151,451 | 331 | 0.01% | — | 43 | +151,451 | New | Q4 2025 | Feb 17, 2026 |
| Squarepoint Ops LLC | History | Added to | 149,094 | 326 | 0.0% | 0.0% | 44 | +137,226 | 1156.27% | Q4 2025 | Feb 13, 2026 |
| Hudson Bay Capital Management LP | History | New | 138,729 | 303 | 0.0% | — | 45 | +138,729 | New | Q4 2025 | Feb 13, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Added to | 130,675 | 286 | 0.01% | 0.0% | 46 | +35,000 | 36.58% | Q4 2025 | Feb 17, 2026 |
| OMERS ADMINISTRATION Corp | History | New | 95,400 | 208 | 0.0% | — | 47 | +95,400 | New | Q4 2025 | Feb 13, 2026 |
| LETKO, BROSSEAU & ASSOCIATES INC | History | New | 90,475 | 198 | 0.0% | — | 48 | +90,475 | New | Q4 2025 | Feb 11, 2026 |
| TD ASSET MANAGEMENT INC | History | No change | 88,600 | 194 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| CITIGROUP INC | History | Added to | 73,774 | 161 | 0.0% | — | 50 | +73,422 | 20858.52% | Q4 2025 | Feb 13, 2026 |
| Dynamic Technology Lab Private Ltd | History | New | 66,789 | 146 | 0.03% | — | 51 | +66,789 | New | Q4 2025 | Feb 13, 2026 |
| Quadrature Capital Ltd | History | Added to | 66,377 | 145 | 0.0% | 0.0% | 52 | +23,465 | 54.68% | Q4 2025 | Feb 17, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Added to | 58,777 | 128 | 0.0% | 0.0% | 53 | +46,745 | 388.51% | Q4 2025 | Feb 13, 2026 |
| Point72 Asset Management, L.P. | History | New | 56,648 | 124 | 0.0% | — | 54 | +56,648 | New | Q4 2025 | Feb 17, 2026 |
| MATAURO, LLC | History | New | 55,108 | 120 | 0.02% | — | 55 | +55,108 | New | Q4 2025 | Jan 16, 2026 |
| Bank of New York Mellon Corp | History | Added to | 54,047 | 118 | 0.0% | 0.0% | 56 | +6,237 | 13.05% | Q4 2025 | Feb 10, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | History | New | 51,552 | 112 | 0.0% | — | 57 | +51,552 | New | Q4 2025 | Feb 17, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | No change | 50,824 | 111 | 0.0% | 0.0% | 58 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Jefferies Financial Group Inc. | History | Reduced | 45,125 | 98 | 0.0% | 0.0% | 59 | -2,375 | -5.0% | Q4 2025 | Feb 09, 2026 |
| LPL Financial LLC | History | New | 42,615 | 93 | 0.0% | — | 60 | +42,615 | New | Q4 2025 | Feb 11, 2026 |
| Lighthouse Investment Partners, LLC | History | New | 38,880 | 85 | 0.0% | — | 61 | +38,880 | New | Q4 2025 | Feb 17, 2026 |
| SG Americas Securities, LLC | History | Added to | 30,629 | 67 | 0.0% | 0.0% | 62 | +9,365 | 44.04% | Q4 2025 | Jan 09, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 30,345 | 66 | 0.0% | 0.0% | 63 | +25,978 | 594.87% | Q4 2025 | Feb 17, 2026 |
| FRED ALGER MANAGEMENT, LLC | History | Reduced | 28,021 | 61 | 0.0% | 0.0% | 64 | -31,792 | -53.15% | Q4 2025 | Feb 17, 2026 |
| MERCER GLOBAL ADVISORS INC /ADV | History | New | 26,510 | 58 | 0.0% | — | 65 | +26,510 | New | Q4 2025 | Feb 18, 2026 |
| Callan Family Office, LLC | History | New | 22,575 | 49 | 0.0% | — | 67 | +22,575 | New | Q4 2025 | Feb 12, 2026 |
| Vanguard Personalized Indexing Management, LLC | History | Added to | 22,384 | 49 | 0.0% | 0.0% | 66 | +233 | 1.05% | Q4 2025 | Feb 13, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | Added to | 20,660 | 45 | 0.0% | 0.0% | 68 | +653 | 3.26% | Q4 2025 | Feb 17, 2026 |
| Clear Harbor Asset Management, LLC | History | New | 19,500 | 42 | 0.0% | — | 69 | +19,500 | New | Q4 2025 | Feb 10, 2026 |
| ANTIPODES PARTNERS Ltd | History | New | 17,187 | 37 | 0.0% | — | 70 | +17,187 | New | Q4 2025 | Feb 05, 2026 |
| China Universal Asset Management Co., Ltd. | History | New | 15,686 | 34 | 0.0% | — | 71 | +15,686 | New | Q4 2025 | Jan 29, 2026 |
| Private Advisor Group, LLC | History | New | 14,725 | 32 | 0.0% | — | 72 | +14,725 | New | Q4 2025 | Feb 17, 2026 |
| CRA Financial Services, LLC | History | No change | 15,000 | 32 | 0.0% | 0.0% | 73 | 0 | 0.0% | Q4 2025 | Jan 16, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 14,392 | 31 | 0.0% | 0.0% | 74 | -253,666 | -94.63% | Q4 2025 | Feb 17, 2026 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | History | New | 13,011 | 28 | 0.0% | — | 76 | +13,011 | New | Q4 2025 | Feb 13, 2026 |
| FMR LLC | History | Reduced | 13,045 | 28 | 0.0% | 0.0% | 75 | -1,019 | -7.25% | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 9,805 | 21 | 0.0% | 0.0% | 77 | -527,844 | -98.18% | Q4 2025 | Feb 11, 2026 |
| HB Wealth Management, LLC | History | New | 10,000 | 21 | 0.0% | — | 78 | +10,000 | New | Q4 2025 | Jan 28, 2026 |
| Mirae Asset Global Investments Co., Ltd. | History | New | 4,678 | 10 | 0.0% | — | 80 | +4,678 | New | Q4 2025 | Jan 26, 2026 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | Added to | 4,600 | 10 | 0.0% | 0.0% | 79 | +4,000 | 666.67% | Q4 2025 | Feb 06, 2026 |
| CANADA PENSION PLAN INVESTMENT BOARD | History | New | 3,500 | 7 | 0.0% | — | 81 | +3,500 | New | Q4 2025 | Feb 17, 2026 |
| GF FUND MANAGEMENT CO. LTD. | History | New | 1,891 | 4 | 0.0% | — | 83 | +1,891 | New | Q4 2025 | Jan 27, 2026 |
| WELLS FARGO & COMPANY/MN | History | Reduced | 2,000 | 4 | 0.0% | 0.0% | 82 | -1,000 | -33.33% | Q4 2025 | Feb 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 1,640 | 3 | 0.0% | 0.0% | 84 | -191 | -10.43% | Q4 2025 | Feb 10, 2026 |
| FLAGSHIP HARBOR ADVISORS, LLC | History | New | 1,000 | 2 | 0.0% | — | 85 | +1,000 | New | Q4 2025 | Jan 21, 2026 |
| Russell Investments Group, Ltd. | History | No change | 939 | 2 | 0.0% | 0.0% | 86 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| NISA INVESTMENT ADVISORS, LLC | History | No change | 811 | 1 | 0.0% | 0.0% | 87 | 0 | 0.0% | Q4 2025 | Jan 15, 2026 |
| Truvestments Capital LLC | History | No change | 680 | 1 | 0.0% | 0.0% | 88 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | Closed out | 0 | 0 | — | 1.39% | — | -2,084,202 | -100.0% | Q3 2025 | Nov 18, 2025 |
| Alyeska Investment Group, L.P. | History | Closed out | 0 | 0 | — | 0.01% | — | -1,300,000 | -100.0% | Q3 2025 | Nov 17, 2025 |
| Caption Management, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -250,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| ACADIAN ASSET MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -186,521 | -100.0% | Q3 2025 | Nov 13, 2025 |
| FEDERATED HERMES, INC. | History | Closed out | 0 | 0 | — | 0.0% | — | -112,028 | -100.0% | Q3 2025 | Nov 03, 2025 |
| Susquehanna Portfolio Strategies, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -33,937 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Rangeley Capital, LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -11,300 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Caitong International Asset Management Co., Ltd | History | Closed out | 0 | 0 | — | 0.01% | — | -8,983 | -100.0% | Q3 2025 | Nov 19, 2025 |
| Rise Advisors, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -1,083 | -100.0% | Q3 2025 | Oct 08, 2025 |
| SBI Securities Co., Ltd. | History | Reduced | 316 | 0 | — | 0.0% | — | -140 | -30.7% | Q4 2025 | Feb 03, 2026 |
| ROYAL BANK OF CANADA | History | New | 123 | 0 | — | — | — | +123 | New | Q4 2025 | Feb 17, 2026 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | History | Added to | 60 | 0 | — | — | — | +58 | 2900.0% | Q4 2025 | Feb 10, 2026 |
| Arax Advisory Partners | History | No change | 10 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Optiver Holding B.V. | History | No change | 24 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Covestor Ltd | History | No change | 34 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| Federation des caisses Desjardins du Quebec | History | No change | 340 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |