Western Standard LLC - ARCA BIOPHARMA INC ownership

ARCA BIOPHARMA INC's ticker is ABIO and the CUSIP is 00211Y506. A total of 24 filers reported holding ARCA BIOPHARMA INC in Q3 2023. The put-call ratio across all filers is 0.00 and the average weighting 0.1%.

Quarter-by-quarter ownership
Western Standard LLC ownership history of ARCA BIOPHARMA INC
ValueSharesWeighting
Q3 2023$2,360,283
+84.5%
1,174,270
+86.3%
2.13%
+93.5%
Q2 2023$1,279,288630,1911.10%
Other shareholders
ARCA BIOPHARMA INC shareholders Q3 2023
NameSharesValueWeighting ↓
SG3 Management, LLC 100,000$249,0000.03%
Murchinson Ltd. 50,593$126,0000.02%
Marquette Asset Management, LLC 17,318$43,0000.01%
SG3 Management, LLC 22,706$57,0000.01%
BRIDGEWAY CAPITAL MANAGEMENT, LLC 46,948$117,0000.00%
Tekla Capital Management LLC 32,461$81,0000.00%
BAILARD, INC. 35,000$87,0000.00%
GROUP ONE TRADING, L.P. 131,501$327,0000.00%
TWO SIGMA SECURITIES, LLC 10,238$25,0000.00%
SUSQUEHANNA INTERNATIONAL GROUP, LLP 882,900$2,198,0000.00%
View complete list of ARCA BIOPHARMA INC shareholders