ARCA BIOPHARMA INC's ticker is ABIO and the CUSIP is 00211Y506. A total of 22 filers reported holding ARCA BIOPHARMA INC in Q4 2021. The put-call ratio across all filers is 0.86 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2022 | $1,000 | -80.0% | 517 | -80.1% | 0.00% | – |
| Q1 2022 | $5,000 | -84.4% | 2,604 | -82.9% | 0.00% | – |
| Q4 2021 | $32,000 | +700.0% | 15,185 | +1095.7% | 0.00% | – |
| Q3 2021 | $4,000 | -90.0% | 1,270 | -88.6% | 0.00% | – |
| Q1 2021 | $40,000 | +3900.0% | 11,121 | +3068.4% | 0.00% | – |
| Q4 2020 | $1,000 | – | 351 | – | 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% |