ARCA BIOPHARMA INC's ticker is ABIO and the CUSIP is 00211Y506. A total of 21 filers reported holding ARCA BIOPHARMA INC in Q4 2020. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $466,237 | -1.0% | 231,959 | 0.0% | 0.00% | – |
| Q2 2023 | $470,876 | -10.6% | 231,959 | -12.4% | 0.00% | – |
| Q1 2023 | $526,815 | -15.7% | 264,731 | +0.4% | 0.00% | – |
| Q4 2022 | $624,923 | +15.3% | 263,681 | +0.1% | 0.00% | – |
| Q3 2022 | $542,000 | -17.6% | 263,427 | -0.3% | 0.00% | – |
| Q2 2022 | $658,000 | +6.1% | 264,302 | -2.1% | 0.00% | – |
| Q1 2022 | $620,000 | +6.0% | 269,877 | -0.7% | 0.00% | – |
| Q4 2021 | $585,000 | -26.4% | 271,722 | +1.2% | 0.00% | – |
| Q3 2021 | $795,000 | -16.7% | 268,394 | -1.8% | 0.00% | – |
| Q2 2021 | $954,000 | -9.0% | 273,442 | -4.8% | 0.00% | – |
| Q1 2021 | $1,048,000 | -9.0% | 287,263 | 0.0% | 0.00% | – |
| Q4 2020 | $1,152,000 | -9.2% | 287,263 | 0.0% | 0.00% | – |
| Q3 2020 | $1,269,000 | – | 287,263 | +598364.6% | 0.00% | – |
| Q2 2020 | $0 | – | 48 | 0.0% | 0.00% | – |
| Q1 2020 | $0 | – | 48 | 0.0% | 0.00% | – |
| Q4 2019 | $0 | – | 48 | 0.0% | 0.00% | – |
| Q3 2019 | $0 | – | 48 | 0.0% | 0.00% | – |
| Q2 2019 | $0 | – | 48 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| SG3 Management, LLC | 100,000 | $249,000 | 0.03% |
| Murchinson Ltd. | 50,593 | $126,000 | 0.02% |
| Marquette Asset Management, LLC | 17,318 | $43,000 | 0.01% |
| SG3 Management, LLC | 22,706 | $57,000 | 0.01% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 46,948 | $117,000 | 0.00% |
| Tekla Capital Management LLC | 32,461 | $81,000 | 0.00% |
| BAILARD, INC. | 35,000 | $87,000 | 0.00% |
| GROUP ONE TRADING, L.P. | 131,501 | $327,000 | 0.00% |
| TWO SIGMA SECURITIES, LLC | 10,238 | $25,000 | 0.00% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 882,900 | $2,198,000 | 0.00% |