Who owns Euroseas (ESEA)
Which tracked institutional funds hold ESEA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ESEA company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
6 tracked funds added or opened ESEA while 13 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ESEA’s largest tracked holder by dollar value, ACADIAN ASSET MANAGEMENT LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ESEA divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 56 tracked filers holding ESEA, 25 increased or opened the position and 30 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ESEA between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 1
- CITADEL ADVISORS LLC$874K
Full exits 6
- ACADIAN ASSET MANAGEMENT LLC$5M
- MARSHALL WACE, LLP$1M
- Squarepoint Ops LLC$898K
- Walleye Capital LLC$690K
- GSA CAPITAL PARTNERS LLP$663K
- Engineers Gate Manager LP$600K
Largest adds
- Inspire Investing, LLC$573K
- NAVELLIER & ASSOCIATES INC$499K
- Qube Research & Technologies Ltd$449K
- JANE STREET GROUP, LLC$311K
- Boston Partners$300K
Largest trims
- RENAISSANCE TECHNOLOGIES LLC$2M
- TWO SIGMA INVESTMENTS, LP$1M
- MILLENNIUM MANAGEMENT LLC$941K
- D. E. Shaw & Co., Inc.$732K
- GOLDMAN SACHS GROUP INC$587K
- State of Tennessee, Department of Treasury$386K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| TWO SIGMA INVESTMENTS, LP trimmed | 67,592 | $4M | 8.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 65,465 | $4M | 8.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 34,652 | $2M | 4.2% | 2026-Q2 |
| Inspire Investing, LLC added | 32,616 | $2M | 4.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 29,136 | $2M | 3.6% | 2026-Q2 |
| Boston Partners added | 24,648 | $2M | 3.0% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 23,655 | $2M | 2.9% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 20,128 | $1M | 2.5% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 19,171 | $1M | 2.3% | 2026-Q2 |
| NAVELLIER & ASSOCIATES INC added | 15,562 | $1M | 1.9% | 2026-Q2 |
| North Star Investment Management Corp. | 15,000 | $996K | 1.8% | 2026-Q2 |
| CREDIT AGRICOLE S A | 14,234 | $945K | 1.7% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 13,772 | $914K | 1.7% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 13,172 | $874K | 1.6% | 2026-Q2 |
| Tidal Investments LLC trimmed | 11,408 | $757K | 1.4% | 2026-Q2 |
| STATE STREET CORP added | 11,198 | $743K | 1.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 8,818 | $585K | 1.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 8,701 | $577K | 1.1% | 2026-Q2 |
| Mariner, LLC trimmed | 8,040 | $534K | 1.0% | 2026-Q2 |
| WINTON GROUP Ltd added | 8,036 | $533K | 1.0% | 2026-Q2 |
| CITIGROUP INC added | 7,250 | $481K | 0.9% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 6,371 | $423K | 0.8% | 2026-Q2 |
| BlackRock, Inc. | 6,166 | $409K | 0.8% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 5,887 | $391K | 0.7% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. new | 5,179 | $344K | 0.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC | 5,058 | $336K | 0.6% | 2026-Q2 |
| U S GLOBAL INVESTORS INC new | 5,000 | $332K | 0.6% | 2026-Q2 |
| Jump Financial, LLC trimmed | 4,790 | $318K | 0.6% | 2026-Q2 |
| State of Tennessee, Department of Treasury trimmed | 4,170 | $277K | 0.5% | 2026-Q2 |
| Redhawk Wealth Advisors, Inc. added | 4,149 | $275K | 0.5% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 4,059 | $269K | 0.5% | 2026-Q2 |
| AlphaCore Capital LLC | 3,877 | $257K | 0.5% | 2026-Q2 |
| JAMISON PRIVATE WEALTH MANAGEMENT, INC. added | 3,738 | $248K | 0.5% | 2026-Q2 |
| Quadrature Capital Ltd trimmed | 3,578 | $237K | 0.4% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 3,326 | $221K | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO new | 3,062 | $203K | 0.4% | 2026-Q2 |
| BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC trimmed | 2,955 | $196K | 0.4% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey | 2,700 | $179K | 0.3% | 2026-Q2 |
| UBS Group AG added | 1,854 | $123K | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 1,601 | $106K | 0.2% | 2026-Q2 |
| Aquatic Capital Management LLC trimmed | 964 | $64K | 0.1% | 2026-Q2 |
| BARCLAYS PLC | 600 | $40K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 400 | $27K | 0.0% | 2026-Q2 |
| Allworth Financial LP trimmed | 260 | $17K | 0.0% | 2026-Q2 |
| Archer Investment Corp added | 215 | $14K | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 190 | $13K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA | 174 | $12K | 0.0% | 2026-Q2 |
| SIGNATUREFD, LLC | 175 | $12K | 0.0% | 2026-Q2 |
| NewEdge Advisors, LLC new | 145 | $10K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. added | 140 | $9K | 0.0% | 2026-Q2 |
| Triumph Capital Management | 126 | $8K | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC added | 98 | $7K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 82 | $5K | 0.0% | 2026-Q2 |
| AMERICAN NATIONAL BANK & TRUST | 34 | $2K | 0.0% | 2026-Q2 |
| Ameritas Advisory Services, LLC new | 12 | $796 | 0.0% | 2026-Q2 |
| Kingdom Financial Group LLC. | 0 | $31 | 0.0% | 2026-Q2 |
| ACADIAN ASSET MANAGEMENT LLC added | 79,095 | $5M | 9.7% | 2026-Q1 stale (1 quarter behind) |
| LAZARD ASSET MANAGEMENT LLC added | 35,031 | $2M | 3.5% | 2025-Q4 stale (2 quarters behind) |
| MARSHALL WACE, LLP added | 21,700 | $1M | 2.7% | 2026-Q1 stale (1 quarter behind) |
| MACKENZIE FINANCIAL CORP trimmed | 18,469 | $1M | 1.9% | 2025-Q4 stale (2 quarters behind) |
| Squarepoint Ops LLC added | 13,429 | $898K | 1.7% | 2026-Q1 stale (1 quarter behind) |
| Cubist Systematic Strategies, LLC added | 13,858 | $826K | 1.5% | 2025-Q3 stale (3 quarters behind) |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 17,583 | $786K | 1.4% | 2025-Q2 stale (4 quarters behind) |
| Walleye Capital LLC trimmed | 10,327 | $690K | 1.3% | 2026-Q1 stale (1 quarter behind) |
| GSA CAPITAL PARTNERS LLP added | 9,923 | $663K | 1.2% | 2026-Q1 stale (1 quarter behind) |
| Engineers Gate Manager LP added | 8,974 | $600K | 1.1% | 2026-Q1 stale (1 quarter behind) |
| COMMONS CAPITAL, LLC added | 10,304 | $563K | 1.0% | 2025-Q4 stale (2 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 9,901 | $541K | 1.0% | 2025-Q4 stale (2 quarters behind) |
| NOVEM GROUP trimmed | 11,693 | $523K | 1.0% | 2025-Q2 stale (4 quarters behind) |
| Perritt Capital Management Inc trimmed | 8,899 | $398K | 0.7% | 2025-Q2 stale (4 quarters behind) |
| MANGROVE PARTNERS IM, LLC new | 5,782 | $387K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| PharVision Advisers, LLC trimmed | 6,696 | $366K | 0.7% | 2025-Q4 stale (2 quarters behind) |
| State of Wyoming new | 4,830 | $323K | 0.6% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC new | 5,383 | $321K | 0.6% | 2025-Q3 stale (3 quarters behind) |
| BANK OF AMERICA CORP /DE/ trimmed | 4,472 | $299K | 0.6% | 2026-Q1 stale (1 quarter behind) |
| Cambridge Investment Research Advisors, Inc. new | 3,632 | $243K | 0.4% | 2026-Q1 stale (1 quarter behind) |
| Inspire Advisors, LLC new | 3,674 | $219K | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Kestra Advisory Services, LLC new | 4,780 | $214K | 0.4% | 2025-Q2 stale (4 quarters behind) |
| Magnetar Financial LLC new | 3,731 | $204K | 0.4% | 2025-Q4 stale (2 quarters behind) |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added | 1,280 | $76K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Russell Investments Group, Ltd. | 612 | $38K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| OPTIMUM INVESTMENT ADVISORS | 500 | $30K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Quarry LP trimmed | 495 | $27K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| CWM, LLC | 400 | $27K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Brooklyn Investment Group new | 228 | $10K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Tower Research Capital LLC (TRC) added | 18 | $983 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Lloyd Advisory Services, LLC. new | 0 | $31 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.