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 59 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	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$5.25M 79,313 shares	0.01%	+218(+0.30%)Added	SEC filing ↗ Aug 13, 2026	▾
02	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$4.49M 67,592 shares	0.00%	-16.38K(-19.50%)Reduced	SEC filing ↗ Aug 14, 2026	▾
03	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$4.34M 65,465 shares	0.01%	-35.30K(-35.00%)Reduced	SEC filing ↗ Aug 13, 2026	▾
04	MORGAN STANLEY CIK 895421 · View history	$2.30M 34,652 shares	0.00%	-1.98K(-5.40%)Reduced	SEC filing ↗ Aug 13, 2026	▾
05	Inspire Investing, LLC CIK 1670139 · View history	$2.16M 32,616 shares	0.09%	+8.81K(+37.00%)Added	SEC filing ↗ Aug 12, 2026	▾
06	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$1.93M 29,136 shares	0.00%	-8.57K(-22.70%)Reduced	SEC filing ↗ Aug 14, 2026	▾
07	Boston Partners CIK 1386060 · View history	$1.64M 24,648 shares	0.00%	+4.66K(+23.30%)Added	SEC filing ↗ Aug 4, 2026	▾
08	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$1.57M 23,655 shares	0.00%	-10.78K(-31.30%)Reduced	SEC filing ↗ Aug 14, 2026	▾
09	Qube Research & Technologies Ltd CIK 1729829 · View history	$1.34M 20,128 shares	0.00%	+6.87K(+51.80%)Added	SEC filing ↗ Aug 14, 2026	▾
10	JANE STREET GROUP, LLC CIK 1595888 · View history	$1.27M 19,171 shares	0.00%	+4.79K(+33.30%)Added	SEC filing ↗ Aug 14, 2026	▾
11	NAVELLIER & ASSOCIATES INC CIK 872163 · View history	$1.03M 15,562 shares	0.08%	+7.58K(+94.80%)Added	SEC filing ↗ Aug 4, 2026	▾
12	North Star Investment Management Corp. CIK 1342857 · View history	$995.55K 15,000 shares	0.05%	0(0.00%)Unchanged	SEC filing ↗ Jul 28, 2026	▾
13	CREDIT AGRICOLE S A CIK 1191672 · View history	$944.71K 14,234 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
14	RAYMOND JAMES FINANCIAL INC CIK 720005 · View history	$914.05K 13,772 shares	0.00%	+1.42K(+11.50%)Added	SEC filing ↗ Aug 14, 2026	▾
15	CITADEL ADVISORS LLC CIK 1423053 · Amended · View history	$874.23K 13,172 shares	0.00%	+13.17KNew	SEC filing ↗ Sep 2, 2026	▾
16	GSA CAPITAL PARTNERS LLP CIK 1362033 · View history	$820.00K 12,356 shares	0.05%	+2.43K(+24.50%)Added	SEC filing ↗ Aug 6, 2026	▾
17	Tidal Investments LLC CIK 1600064 · View history	$757.15K 11,408 shares	0.00%	-1.12K(-8.90%)Reduced	SEC filing ↗ Aug 13, 2026	▾
18	STATE STREET CORP CIK 93751 · Amended · View history	$743.21K 11,198 shares	0.00%	+1.09K(+10.80%)Added	SEC filing ↗ Sep 22, 2026	▾
19	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$585.25K 8,818 shares	0.00%	-14.02K(-61.40%)Reduced	SEC filing ↗ Aug 14, 2026	▾
20	LPL Financial LLC CIK 1403438 · View history	$577.45K 8,701 shares	0.00%	-158(-1.80%)Reduced	SEC filing ↗ Aug 7, 2026	▾

Showing 20 / 59 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

628,353

Not deduplicated across managers

Disclosed value

$41.69M

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 2026

Explore all 59 reporting institutions.

This page includes 20 of 59 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.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 59 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"Y23592135","quarter":"2026Q2","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

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.