ARCA BIOPHARMA INC - COM PAR$.001 (ABIO)

CUSIP: 00211Y407

Q3 2018 13F Holders as of 30 Sep 2018

Share change
+288,749
SEC-reported price per share
$0.56
Number of holders
10
Value change
+$162,660
Number of buys
4
Number of sells
4

Security key

00211Y407

Report period

Q3 2018

Institutions

10

Top holders

10

Ownership snapshot

Top reported holders of ABIO - ARCA BIOPHARMA INC - COM PAR$.001 (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Tekla Capital Management LLC
Disclosed value leader
Tekla Capital Management LLC
Comparable rows
0/13
Latest evidence
30 Jun 2018
13F Highest disclosed value: $451,000 13 rows are not safely comparable across share classes. Showing 1-6 of 13 holder rows.

Quick read

Tekla Capital Management LLC has the largest disclosed position value at $451K.

0 of 13 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Tekla Capital Management LLC's linked filing trail.
Disclosed position value Top 5
Tekla Capital Management LLC $451K
RENAISSANCE TECHNOLOGIES LLC $233K
ACADIAN ASSET MANAGEMENT LLC $56K
Aveo Capital Partners, LLC $52K
PANAGORA ASSET MANAGEMENT INC $49K

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 13 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Tekla Capital Management LLC
13F
Company
13F
—
denominator unverified
$451,000
811,227 shares
— 30 Jun 2018
RENAISSANCE TECHNOLOGIES LLC
13F
Company
13F
—
denominator unverified
$233,000
419,250 shares
— 30 Jun 2018
ACADIAN ASSET MANAGEMENT LLC
13F
Company
13F
—
denominator unverified
$56,000
100,336 shares
— 30 Jun 2018
Aveo Capital Partners, LLC
13F
Company
13F
—
denominator unverified
$52,000
93,258 shares
— 30 Jun 2018
PANAGORA ASSET MANAGEMENT INC
13F
Company
13F
—
denominator unverified
$49,000
88,995 shares
— 30 Jun 2018
GEODE CAPITAL MANAGEMENT, LLC
13F
Company
13F
—
denominator unverified
$27,000
48,679 shares
— 30 Jun 2018
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2018

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
10
Shares
2,013,596
Rows available
10
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2018 vs Q2 2018 Across Filers

Q2 2018 holders
13
Q3 2018 holders
10
Holder diff
-3
Investor Q2 2018 Shares Q3 2018 Shares Share Diff Share Chg % Q2 2018 value Q3 2018 value Value change Value Chg %
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