ARCA BIOPHARMA INC's ticker is ABIO and the CUSIP is 00211Y506. A total of 27 filers reported holding ARCA BIOPHARMA INC in Q4 2023. The put-call ratio across all filers is 0.00 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2024 | $1,318 | -75.6% | 344 | -88.8% | 0.00% | – |
| Q1 2024 | $5,412 | +5.3% | 3,075 | +1.7% | 0.00% | – |
| Q4 2023 | $5,139 | -30.7% | 3,023 | -18.1% | 0.00% | – |
| Q3 2023 | $7,419 | +49.7% | 3,691 | +51.1% | 0.00% | – |
| Q2 2023 | $4,957 | +82516.7% | 2,442 | -18.4% | 0.00% | – |
| Q1 2023 | $6 | +100.0% | 2,991 | +103.2% | 0.00% | – |
| Q4 2022 | $3 | -99.7% | 1,472 | +182.0% | 0.00% | – |
| Q3 2022 | $1,000 | -90.9% | 522 | -89.5% | 0.00% | – |
| Q1 2022 | $11,000 | +120.0% | 4,951 | +116.7% | 0.00% | – |
| Q4 2021 | $5,000 | -28.6% | 2,285 | -2.4% | 0.00% | – |
| Q3 2021 | $7,000 | – | 2,341 | +3292.8% | 0.00% | – |
| Q2 2021 | $0 | -100.0% | 69 | -99.6% | 0.00% | -100.0% |
| Q1 2021 | $57,000 | +5600.0% | 15,660 | +9749.1% | 0.00% | – |
| Q3 2020 | $1,000 | – | 159 | +15800.0% | 0.00% | – |
| Q4 2019 | $0 | – | 1 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Newtyn Management, LLC | 500,000 | $1,030,000 | 0.23% |
| SG3 Management, LLC | 200,000 | $412,000 | 0.03% |
| Marquette Asset Management, LLC | 17,318 | $36,000 | 0.01% |
| SG3 Management, LLC | 75,412 | $155,674 | 0.01% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 46,948 | $97,000 | 0.00% |
| Tekla Capital Management LLC | 32,461 | $67,000 | 0.00% |
| Virtu Financial LLC | 14,221 | $29,000 | 0.00% |
| GROUP ONE TRADING, L.P. | 144,284 | $297,000 | 0.00% |
| WELLS FARGO & COMPANY/MN | 96 | $0 | 0.00% |
| NORTHERN TRUST CORP | 17,517 | $36,000 | 0.00% |