Arca Biopharma Inc.
13F holders, Q2 2024 (June 30)At the end of Q2 2024, 31 institutions reported holding Arca Biopharma Inc. in their 13F filings, up 8 from Q1 2024. 13 opened new positions and 4 sold out. The largest holders were Cable Car Capital, LP ($15.3M), RTW Investments, LP ($5.4M) and Janus Henderson Group PLC ($5.2M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Arca Biopharma Inc.
- CUSIP
- 00211Y506
- Latest filing quarter
- Q2 2024
History
Number of 13F holders
Total Exit/New Position Q1 2024 → Q2 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $29.8M |
| Exits | 4 | $3.7M |
All 13F filers, Q1 2024 → Q2 2024: 7,853,996 shares bought and 2,132,849 shares sold, net +5,721,147 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 31 holders
| Cable Car Capital, LP | 16.86% | No change | 4,000,452 | $15.3M |
| RTW Investments, LP | 0.08% | New | 1,400,000 | $5.4M |
| Janus Henderson Group PLC | 0.00% | New | 1,382,736 | $5.2M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | New | 1,200,000 | $4.6M |
| Avidity Partners Management LP | 0.16% | New | 1,000,000 | $3.8M |
| Venrock Adviser, LLC | 0.21% | New | 866,375 | $3.3M |
| Cowen and Company, LLC | 0.07% | New | 700,000 | $2.7M |
| Morgan Stanley | 0.00% | New | 650,000 | $2.5M |
| Vanguard Group Inc. | 0.00% | No change | 453,598 | $1.7M |
| Commodore Capital LP | 0.11% | New | 414,325 | $1.6M |
| BlackRock Inc. | 0.00% | Add +7.2% | 247,909 | $949K |
| Geode Capital Management, LLC | 0.00% | Add +13.6% | 161,735 | $620K |
| ADAR1 Capital Management, LLC | 0.07% | New | 84,676 | $324K |
| Renaissance Technologies | 0.00% | Add +11.3% | 73,099 | $280K |
| Affinity Asset Advisors, LLC | 0.05% | New | 72,484 | $278K |
| State Street Corp. | 0.00% | No change | 59,707 | $229K |
| Dimensional Fund Advisors LP | 0.00% | No change | 42,502 | $163K |
| Aberdeen Group plc | 0.00% | No change | 32,461 | $124K |
| Cubist Systematic Strategies, LLC | 0.00% | New | 27,779 | $106K |
| Northern Trust Corp. | 0.00% | No change | 20,982 | $80K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 14,988 | $57K |
| Group One Trading LLC | 0.00% | New | 7,131 | $27K |
| Citadel Advisors | 0.00% | Add +225.6% | 3,985 | $15K |
| Activest Wealth Management | 0.00% | New | 2,000 | $8K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -88.8% | 344 | $1K |
| Simplex Trading, LLC | 0.00% | Add +9066.7% | 275 | $1K |
| Parallel Advisors, LLC | 0.00% | No change | 244 | $935 |
| Bank of America Corp. | 0.00% | Reduce -14.2% | 151 | $579 |
| Qube Research & Technologies Ltd | 0.00% | No change | 50 | $192 |
| JPMorgan Chase & Co. | 0.00% | Reduce -11.1% | 16 | $61 |
| Royal Bank of Canada | 0.00% | Reduce -41.1% | 33 | $0 |
"% of holder's portfolio" is ARCA BIOPHARMA INC's weight in each manager's 13F, not the share of Arca Biopharma Inc. the manager owns.