Switch to:

ARCA biopharma Inc (ABIO) Ownership Data

Short Interest History (%)

This is the historical short interest of ARCA biopharma Inc, as measured by the Short Percentage Of Float.

Institutional Ownership History (%)

This the Institutional Ownership History of ARCA biopharma Inc Peter Lynch prefers to buy companies with low institutional ownership.

Insider ownership (%)

This is the historical insider ownership of ARCA biopharma Inc. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Top Direct Holders

HolderShares% of Shares
Report Date
Dr. Michael R. Bristow,M.D.,PhD292,6251.38%2014-09-18
Christopher D. Ozeroff126,7370.6%2014-02-27
Mr. Patrick Wheeler101,5100.48%2014-09-18
Richard B. Brewer83,4900.39%2009-01-27
Mark L. Perry65,8330.31%2006-09-28
Dr. James R. Gavin,III25,0000.12%2006-05-24
Dr. Michael D. Levy,M.D.20,8210.1%2008-02-01
Mr. Ted W. Love,M.D.3,580less than 0.1%2008-12-31
Mr. Gary S. Titus2,633less than 0.1%2006-08-30
Lee Bendekgey1,502less than 0.1%2008-12-31

Top Fund Holders

HolderSharesReport Date% of Shares
% of Total
Assets Managed
Market Value
Sabby Management LLC1,565,9892013-12-319.980.002,630,862
Vanguard Group, Inc.404,2522014-09-301.930.00505,000
Vanguard Total Stock Mkt Idx320,4242014-10-311.520.00358,875
Atlas Venture Fund VII LP263,2562013-12-311.680.00442,270
GRT Capital Partners LLC214,0772014-09-301.010.03265,000
Bridgeway Capital Management, Inc120,0002014-09-300.570.00150,000
Bridgeway Ultra Small Company Fund120,0002014-09-300.570.11150,000
Vanguard Instl Total Stock Market Index69,7002014-10-310.330.0078,064
California Public Employees Retrmnt Sys57,6952014-09-300.270.0072,000
Fidelity Spartan® Extended Mkt Indx Fd25,6532014-10-310.120.0028,731

Add Notes, Comments

If you want to ask a question, or report a bug, please create a support ticket.

User Comments

No comment yet

Get WordPress Plugins for easy affiliate links on Stock Tickers and Guru Names | Earn affiliate commissions by embedding GuruFocus Charts
GuruFocus Affiliate Program: Earn up to $400 per referral. ( Learn More)
Free 7-day Trial