CABALETTA BIO INC (CABA)
Institutional ownership reported to the SEC as of Q2 2026, across 28 quarters.
Institutions report 158,767,245 shares against 169,545,445 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| JENNISON ASSOCIATES LLC | $62.3M | 20,033,730 | 0.04% | 14q | +123.3%+$34.4M |
| T. Rowe Price Investment Management, Inc. | $58.7M | 18,869,907 | 0.04% | 11q | +70.3%+$24.2M |
| Bain Capital Life Sciences Investors, LLC | $53.6M | 17,241,445 | 3.19% | 13q | +78.2%+$23.5M |
| BlackRock, Inc. | $33.4M | 10,754,701 | 0.00% | 8q | +353.2%+$26.1M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $28.5M | 9,174,758 | 0.04% | 27q | +3.9%+$1.1M |
| STATE STREET CORP | $24.4M | 7,839,305 | 0.00% | 27q | +1568.0%+$22.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $22.5M | 7,227,018 | 0.00% | 2q | +79.4%+$9.9M |
| Cormorant Asset Management, LP | $15.6M | 5,000,000 | 0.80% | 5q | -9.1%-$1.6M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $13.7M | 4,418,674 | 0.00% | 13q | +899.1%+$12.4M |
| Woodline Partners LP | $13.1M | 4,200,142 | 0.04% | 5q | +235.9%+$9.2M |
| CITADEL ADVISORS LLC | $12.9M incl. $1.9M options CALL+PUT | 3,522,112 | 0.00% | 23q | HELD |
| NORGES BANK | $12.8M | 4,112,401 | 0.00% | new | NEW |
| Opaleye Management Inc. | $12.0M | 3,863,800 | 1.09% | 4q | +180.0%+$7.7M |
| GEODE CAPITAL MANAGEMENT, LLC | $10.8M | 3,459,464 | 0.00% | 27q | +205.3%+$7.2M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $9.1M incl. $8.9M options CALL+PUT | 63,228 | 0.00% | 22q | HELD |
| FRANKLIN RESOURCES INC | $7.5M | 2,413,937 | 0.00% | new | NEW |
| GOLDMAN SACHS GROUP INC | $6.9M | 2,211,825 | 0.00% | 12q | +182.4%+$4.4M |
| MILLENNIUM MANAGEMENT LLC | $6.4M | 2,068,491 | 0.00% | 10q | -65.0%-$11.9M |
| CANTOR FITZGERALD, L. P. | $5.0M | 1,600,002 | 0.03% | 2q | +109.2%+$2.6M |
| MARSHALL WACE, LLP | $4.9M | 1,565,939 | 0.00% | 10q | -28.2%-$1.9M |
| RENAISSANCE TECHNOLOGIES LLC | $4.8M | 1,535,300 | 0.01% | 7q | -24.6%-$1.6M |
| UBS Group AG | $4.6M | 1,471,895 | 0.00% | 16q | +142.6%+$2.7M |
| Qube Research & Technologies Ltd | $4.4M | 1,426,840 | 0.00% | 4q | -26.3%-$1.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $4.4M | 1,418,108 | 0.00% | new | NEW |
| TWO SIGMA INVESTMENTS, LP | $4.4M | 1,410,931 | 0.00% | 25q | -43.5%-$3.4M |
| MORGAN STANLEY | $4.2M | 1,345,526 | 0.00% | 27q | -4.4%-$194.8K |
| SPHERA FUNDS MANAGEMENT LTD. | $4.1M | 1,329,012 | 0.54% | new | NEW |
| SUPERSTRING CAPITAL MANAGEMENT LP | $3.5M | 1,278,652 | 2.20% | 10q | +19.9%+$577.8K |
| VANGUARD FIDUCIARY TRUST CO | $3.4M | 1,088,595 | 0.00% | 2q | +90.9%+$1.6M |
| NORTHERN TRUST CORP | $3.1M | 1,007,102 | 0.00% | 27q | +322.4%+$2.4M |
| DIMENSIONAL FUND ADVISORS LP | $3.0M | 967,195 | 0.00% | 3q | +30.6%+$704.6K |
| Stonepine Capital Management, LLC | $2.9M | 917,100 | 1.61% | 3q | +1734.2%+$2.7M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $2.7M | 856,637 | 0.00% | 3q | +13.2%+$311.0K |
| AMERIPRISE FINANCIAL INC | $2.6M | 828,145 | 0.00% | new | NEW |
| HEIGHTS CAPITAL MANAGEMENT, INC | $2.3M | 755,626 | 0.54% | new | NEW |
| Blue Owl Capital Holdings LP | $2.2M | 714,710 | 0.33% | new | NEW |
| Ikarian Capital, LLC | $2.2M | 700,000 | 0.23% | 3q | -22.2%-$622.0K |
| Burkehill Global Management, LP | $2.2M | 700,000 | 0.08% | 5q | HELD |
| GSA CAPITAL PARTNERS LLP | $2.1M | 668,563 | 0.13% | 3q | +19.0%+$332.2K |
| Nuveen, LLC | $2.0M | 646,345 | 0.00% | new | NEW |
| Caption Management, LLC | $1.9M CALL | options only | 0.01% | 2q | OPTIONS |
| SIMPLEX TRADING, LLC | $1.6M CALL+PUT | options only | 0.00% | 16q | OPTIONS |
| KVP Capital Advisors, LP | $1.6M | 505,431 | 1.15% | 3q | HELD |
| GROUP ONE TRADING LLC | $1.5M CALL+PUT | options only | 0.00% | 7q | OPTIONS |
| BANK OF AMERICA CORP /DE/ | $1.5M | 493,314 | 0.00% | 27q | +83.2%+$696.8K |
| JANE STREET GROUP, LLC | $1.5M CALL+PUT | options only | 0.00% | 5q | OPTIONS |
| Jump Financial, LLC | $1.5M | 488,775 | 0.01% | 2q | +2826.8%+$1.5M |
| Raiffeisen Bank International AG | $1.3M | 430,000 | 0.02% | 7q | -4.4%-$62.2K |
| TD Asset Management Inc | $1.2M | 391,472 | 0.00% | 11q | +485.0%+$1.0M |
| Susquehanna Portfolio Strategies, LLC | $1.2M | 383,294 | 0.02% | 2q | +2078.4%+$1.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.2M | 374,886 | 0.00% | 15q | +637.6%+$1.0M |
| Bank of New York Mellon Corp | $948.0K | 304,819 | 0.00% | 27q | +461.4%+$779.1K |
| WELLINGTON MANAGEMENT GROUP LLP | $890.1K | 286,212 | 0.00% | 2q | +15.6%+$119.9K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $831.5K | 267,372 | 0.01% | 7q | HELD |
| Invesco Ltd. | $751.3K | 241,565 | 0.00% | 13q | +25.6%+$153.0K |
| WELLS FARGO & COMPANY/MN | $612.3K | 196,872 | 0.00% | 27q | +3181.2%+$593.6K |
| CITIGROUP INC | $573.0K | 184,232 | 0.00% | 14q | +570.6%+$487.5K |
| BOOTHBAY FUND MANAGEMENT, LLC | $567.4K | 182,455 | 0.01% | 3q | -25.1%-$189.7K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $566.2K | 182,055 | 0.00% | new | NEW |
| PANAGORA ASSET MANAGEMENT INC | $503.6K | 161,916 | 0.00% | new | NEW |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $475.7K | 152,964 | 0.01% | new | NEW |
| TUDOR INVESTMENT CORP ET AL | $466.5K CALL | options only | 0.00% | 2q | OPTIONS |
| Rafferty Asset Management, LLC | $454.4K | 146,107 | 0.00% | new | NEW |
| Diametric Capital, LP | $421.7K | 135,598 | 0.04% | 2q | -48.4%-$395.7K |
| RHUMBLINE ADVISERS | $409.4K | 131,640 | 0.00% | new | NEW |
| Almitas Capital LLC | $391.5K | 125,900 | 0.09% | 6q | -62.7%-$657.7K |
| DEUTSCHE BANK AG\ | $345.1K | 110,962 | 0.00% | new | NEW |
| Virtus Investment Advisers, LLC | $338.1K | 108,703 | 0.08% | new | NEW |
| HRT FINANCIAL LP | $306.0K incl. $306.0K options OPT | 98,500 | 0.00% | 2q | HELD |
| ALLIANCEBERNSTEIN L.P. | $291.6K | 108,410 | 0.00% | new | NEW |
| D. E. Shaw & Co., Inc. | $281.9K | 90,652 | 0.00% | 2q | -52.1%-$307.1K |
| LETKO, BROSSEAU & ASSOCIATES INC | $281.4K | 90,475 | 0.00% | 3q | HELD |
| Graham Capital Management, L.P. | $252.8K | 81,279 | 0.00% | 3q | -20.1%-$63.5K |
| LPL Financial LLC | $245.9K | 79,075 | 0.00% | 3q | +13.7%+$29.5K |
| RAYMOND JAMES FINANCIAL INC | $237.5K incl. $50.0K options CALL | 60,289 | 0.00% | 2q | +205.0%+$159.6K |
| PROFUND ADVISORS LLC | $228.3K | 73,409 | 0.01% | new | NEW |
| Virtu Financial LLC | $216.0K | 69,511 | 0.01% | 2q | +79.6%+$95.7K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $213.3K | 68,592 | 0.00% | new | NEW |
| MetLife Investment Management, LLC | $207.6K | 66,749 | 0.00% | new | NEW |
| JPMORGAN CHASE & CO | $184.6K | 59,368 | 0.00% | 27q | +723.9%+$162.2K |
| Vanguard Global Advisers, LLC | $178.4K | 57,372 | 0.00% | 2q | +60.5%+$67.2K |
| MATAURO, LLC | $171.4K | 55,108 | 0.02% | 3q | HELD |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $168.2K | 54,086 | 0.00% | new | NEW |
| EntryPoint Capital, LLC | $158.4K | 50,927 | 0.04% | new | NEW |
| ADAR1 Capital Management, LLC | $155.5K | 50,000 | 0.01% | new | NEW |
| XTX Topco Ltd | $142.1K | 45,702 | 0.00% | 5q | +265.3%+$103.2K |
| BARCLAYS PLC | $139.0K | 44,701 | 0.00% | 18q | -54.3%-$165.1K |
| KEYBANK NATIONAL ASSOCIATION/OH | $121.3K | 39,005 | 0.00% | new | NEW |
| Quantbot Technologies LP | $115.7K | 37,208 | 0.00% | new | NEW |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $107.0K | 34,419 | 0.00% | new | NEW |
| Police & Firemen's Retirement System of New Jersey | $103.3K | 33,203 | 0.00% | new | NEW |
| Grey Ledge Advisors, LLC | $93.3K | 30,000 | 0.02% | 2q | +50.0%+$31.1K |
| WINTON GROUP Ltd | $84.0K | 27,000 | 0.00% | 2q | +76.5%+$36.4K |
| TWO SIGMA SECURITIES, LLC | $82.9K | 26,663 | 0.01% | new | NEW |
| China Universal Asset Management Co., Ltd. | $80.7K | 25,950 | 0.00% | 3q | +51.9%+$27.6K |
| RITHOLTZ WEALTH MANAGEMENT | $77.8K | 25,000 | 0.00% | new | NEW |
| Wealthfront Advisers LLC | $75.8K | 24,389 | 0.00% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $72.8K | 23,400 | 0.00% | new | NEW |
| INTECH INVESTMENT MANAGEMENT LLC | $71.6K | 23,035 | 0.00% | new | NEW |
| VOYA INVESTMENT MANAGEMENT LLC | $66.5K | 21,377 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-30 | 13G/A | Vanguard Capital Management | 3.8% |
| 2026-10-27 | 13G/A | BlackRock, Inc. | 7.7% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 19 | $2.3M | 1,202,496 | 6 | 9 | 1 | 0.0% |
| Q2 2026 | 145 | $511.1M | 158,767,245 | 53 | 50 | 21 | 3.6% |
| Q1 2026 | 114 | $237.7M | 84,774,671 | 28 | 29 | 29 | 4.3% |
| Q4 2025 | 95 | $181.1M | 80,250,735 | 29 | 33 | 18 | 3.0% |
| Q3 2025 | 77 | $169.5M | 70,138,947 | 12 | 22 | 31 | 3.2% |
| Q2 2025 | 86 | $112.6M | 72,765,133 | 26 | 21 | 26 | 1.7% |
| Q1 2025 | 94 | $51.1M | 36,317,397 | 15 | 25 | 30 | 1.5% |
| Q4 2024 | 108 | $88.7M | 38,433,318 | 21 | 39 | 24 | 1.6% |
| Q3 2024 | 117 | $229.7M | 48,339,118 | 19 | 43 | 35 | 0.7% |
| Q2 2024 | 140 | $391.4M | 52,039,265 | 17 | 50 | 47 | 0.6% |
| Q1 2024 | 161 | $928.9M | 53,013,570 | 43 | 45 | 47 | 2.6% |
| Q4 2023 | 130 | $1.1B | 48,981,867 | 37 | 39 | 29 | 1.3% |
| Q3 2023 | 100 | $624.7M | 40,903,546 | 25 | 45 | 9 | 0.3% |
| Q2 2023 | 88 | $472.4M | 36,440,182 | 30 | 29 | 15 | 0.4% |
| Q1 2023 | 73 | $204.8M | 24,652,225 | 23 | 21 | 13 | 0.4% |
| Q4 2022 | 63 | $185.0M | 19,878,092 | 25 | 11 | 18 | 0.6% |
| Q3 2022 | 46 | $378.4M | 581,828,907 | 7 | 10 | 13 | 0.0% |
| Q2 2022 | 48 | $28.4M | 26,793,402 | 4 | 9 | 17 | 0.0% |
| Q1 2022 | 57 | $58.1M | 28,173,431 | 7 | 18 | 16 | 1.6% |
| Q4 2021 | 62 | $109.8M | 28,312,277 | 16 | 19 | 15 | 2.3% |
| Q3 2021 | 59 | $216.5M | 17,652,746 | 12 | 17 | 14 | 0.9% |
| Q2 2021 | 59 | $138.5M | 16,030,288 | 12 | 19 | 15 | 0.5% |
| Q1 2021 | 66 | $1.0B | 93,277,881 | 14 | 17 | 17 | 0.1% |
| Q4 2020 | 55 | $205.3M | 16,451,140 | 6 | 16 | 18 | 0.0% |
| Q3 2020 | 54 | $180.3M | 16,631,601 | 7 | 14 | 22 | 0.0% |
| Q2 2020 | 51 | $186.3M | 16,720,681 | 15 | 24 | 4 | 0.0% |
| Q1 2020 | 41 | $117.4M | 16,081,866 | 6 | 14 | 13 | 0.0% |
| Q4 2019 | 40 | $228.8M | 16,376,232 | 38 | 0 | 0 | 0.0% |
