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.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
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