Company · Ownership research

EUROSEAS LTD. ESEA

CIK 0001341170 · CUSIP Y23592135

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP Y23592135 (ESEA), not CUSIP Y23592309 (ESEA), and does not merge CUSIPs.

This page lists the top 20 of 43 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$4.38M 97,978 shares	0.01%	-600(-0.60%)Reduced	SEC filing ↗ Aug 13, 2025	▾
02	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$3.66M 81,791 shares	0.00%	+19.65K(+31.60%)Added	SEC filing ↗ Aug 14, 2025	▾
03	LAZARD ASSET MANAGEMENT LLC CIK 1207017 · View history	$1.60M 35,861 shares	0.00%	-127(-0.40%)Reduced	SEC filing ↗ Aug 14, 2025	▾
04	RAYMOND JAMES FINANCIAL INC CIK 720005 · View history	$870.07K 19,456 shares	0.00%	+19.46KNew	SEC filing ↗ Aug 14, 2025	▾
05	MORGAN STANLEY CIK 895421 · View history	$869.58K 19,445 shares	0.00%	+13.84K(+247.00%)Added	SEC filing ↗ Aug 14, 2025	▾
06	MARSHALL WACE, LLP CIK 1318757 · View history	$801.74K 17,928 shares	0.00%	-13.68K(-43.30%)Reduced	SEC filing ↗ Aug 13, 2025	▾
07	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$786.31K 17,583 shares	0.00%	-28.72K(-62.00%)Reduced	SEC filing ↗ Aug 13, 2025	▾
08	Boston Partners CIK 1386060 · Amended · View history	$762.25K 17,045 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 12, 2025	▾
09	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$672.37K 15,035 shares	0.00%	+4.18K(+38.60%)Added	SEC filing ↗ Aug 14, 2025	▾
10	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$602.29K 13,468 shares	0.00%	+13.47KNew	SEC filing ↗ Aug 14, 2025	▾
11	OSAIC HOLDINGS, INC. CIK 1677044 · Amended · View history	$557.33K 12,463 shares	0.00%	-1.58K(-11.20%)Reduced	SEC filing ↗ Sep 4, 2025	▾
12	NOVEM GROUP CIK 1926783 · View history	$522.91K 11,693 shares	0.07%	-6.91K(-37.10%)Reduced	SEC filing ↗ Jul 16, 2025	▾
13	CITADEL ADVISORS LLC CIK 1423053 · View history	$485.30K 10,852 shares	0.00%	+10.85KNew	SEC filing ↗ Aug 14, 2025	▾
14	Cubist Systematic Strategies, LLC CIK 1603465 · View history	$413.35K 9,243 shares	0.00%	+9.24KNew	SEC filing ↗ Aug 14, 2025	▾
15	Perritt Capital Management Inc CIK 1279342 · Amended · View history	$397.96K 8,899 shares	0.21%	-4.10K(-31.50%)Reduced	SEC filing ↗ Aug 14, 2025	▾
16	Mariner, LLC CIK 1373442 · View history	$364.96K 8,161 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
17	Quadrature Capital Ltd CIK 1651424 · View history	$319.42K 7,092 shares	0.01%	+7.09KNew	SEC filing ↗ Aug 13, 2025	▾
18	BlackRock, Inc. CIK 2012383 · View history	$310.58K 6,945 shares	0.00%	+123(+1.80%)Added	SEC filing ↗ Aug 12, 2025	▾
19	LPL Financial LLC CIK 1403438 · View history	$309.95K 6,931 shares	0.00%	-2.14K(-23.60%)Reduced	SEC filing ↗ Aug 12, 2025	▾
20	Tidal Investments LLC CIK 1600064 · View history	$277.26K 6,200 shares	0.00%	+6.20KNew	SEC filing ↗ Aug 14, 2025	▾

Showing 20 / 43 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

468,084

Not deduplicated across managers

Disclosed value

$20.93M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

EUROSEAS LTD. · Q2 2025

Explore all 43 reporting institutions.

This page includes 20 of 43 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.