ARCA biopharma, Inc.

NasdaqCM:ABIO Stock Report

Market Cap: US$51.9m

ARCA biopharma Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqCM:ABIO Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
03 Apr 24BuyUS$4,047,578Adage Capital Management, L.P.Company1,200,000US$3.90

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of ABIO?
Owner TypeNumber of SharesOwnership Percentage
Private Companies3,0230.0208%
Individual Insiders147,1191.01%
General Public2,531,67817.5%
Institutions3,143,71221.7%
Hedge Funds8,675,61159.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 82.53% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
27.6%
Cable Car Capital LLC
4,000,452US$14.3m0%20.69%
9.72%
Western Standard, LLC
1,410,143US$5.0m20.1%4.58%
8.28%
Adage Capital Management, L.P.
1,200,000US$4.3m0%0.01%
7.45%
Janus Henderson Group plc
1,080,107US$3.9m0%no data
7.34%
Allostery Investments LP
1,065,016US$3.8m0%no data
6.9%
Avidity Partners Management, L.P.
1,000,000US$3.6m0%0.14%
4.88%
BML Capital Management, LLC
706,930US$2.5m0%1.77%
3.13%
The Vanguard Group, Inc.
453,598US$1.6m0.68%no data
1.86%
Newtyn Management, LLC
269,320US$964.2k-10.2%0.13%
1.6%
BlackRock, Inc.
231,911US$830.2k-0.02%no data
0.98%
Geode Capital Management, LLC
142,349US$509.6k0%no data
0.49%
State Street Global Advisors, Inc.
71,137US$254.7k0%no data
0.4%
Renaissance Technologies LLC
57,299US$205.1k12.8%no data
0.35%
Christopher Ozeroff
50,970US$182.5k0%no data
0.34%
Robert Conway
50,000US$179.0k0%no data
0.29%
Dimensional Fund Advisors LP
42,514US$152.2k0%no data
0.28%
C. Dekker
40,000US$143.2k0%no data
0.22%
abrdn plc
32,461US$116.2k0%no data
0.14%
Northern Trust Global Investments
20,982US$75.1k0%no data
0.1%
Charles Schwab Investment Management, Inc.
14,988US$53.7k0%no data
0.084%
Two Sigma Securities, LLC, Asset Management Arm
12,119US$43.4k0%no data
0.044%
Citadel Advisors LLC
6,320US$22.6k0%no data
0.033%
Michael Bristow
4,808US$17.2k0%no data
0.021%
Tower Research Capital LLC
3,023US$10.8k-18.1%no data
0.0078%
UBS Asset Management AG
1,131US$4.0k805%no data
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