ECO Okeanis Eco Tankers Corp.
Okeanis Eco Tankers Corp. (ECO) Institutional Ownership
What the institutions did with ECO last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| QVT Financial LP | 1.4M | 14.6% |
| FIL Ltd | 829.4K | 8.5% |
| BARCLAYS PLC | 577.7K | 5.9% |
| MARSHALL WACE, LLP | 565.6K | 5.8% |
| TWO SIGMA INVESTMENTS, LP | 527.0K | 5.4% |
| JANE STREET GROUP, LLC | 488.4K | 5.0% |
| GOLDMAN SACHS GROUP INC | 423.7K | 4.3% |
| Qube Research & Technologies Ltd | 399.1K | 4.1% |
| VR Advisory Services Ltd | 343.7K | 3.5% |
| ACADIAN ASSET MANAGEMENT LLC | 290.8K | 3.0% |
| JPMORGAN CHASE & CO | 284.7K | 2.9% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 260.3K | 2.7% |
| Encompass Capital Advisors LLC | 222.2K | 2.3% |
| Portolan Capital Management, LLC | 196.0K | 2.0% |
| MORGAN STANLEY | 193.7K | 2.0% |
| MILLENNIUM MANAGEMENT LLC | 160.0K | 1.6% |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 159.6K | 1.6% |
| Thomist Capital Management, LP | 133.9K | 1.4% |
| BNP PARIBAS FINANCIAL MARKETS | 119.4K | 1.2% |
| FEARNLEY ASSET MANAGEMENT AS | 111.8K | 1.1% |
| Walleye Capital LLC | 111.1K | 1.1% |
| Marnell Management LLC | 96.3K | 1.0% |
| CastleKnight Management LP | 88.3K | 0.9% |
| RAYMOND JAMES FINANCIAL INC | 88.3K | 0.9% |
| Point72 Asset Management, L.P. | 87.6K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Portolan Capital Management, LLC | Reduced | 538.9K | 196.0K | -342.9K |
| BARCLAYS PLC | Increased | 270.0K | 577.7K | +307.7K |
| BlackRock, Inc. | Reduced | 266.6K | 32.9K | -233.7K |
| Qube Research & Technologies Ltd | Increased | 172.8K | 399.1K | +226.3K |
| TWO SIGMA INVESTMENTS, LP | Increased | 304.4K | 527.0K | +222.7K |
| BANK OF AMERICA CORP /DE/ | Reduced | 278.3K | 72.0K | -206.3K |
| FIL Ltd | Increased | 624.2K | 829.4K | +205.2K |
| JANE STREET GROUP, LLC | Increased | 326.3K | 488.4K | +162.1K |
| Encompass Capital Advisors LLC | Reduced | 377.4K | 222.2K | -155.2K |
| MORGAN STANLEY | Increased | 58.9K | 193.7K | +134.8K |
| Militia Capital Management LLC | Reduced | 210.0K | 80.0K | -130.0K |
| FEARNLEY ASSET MANAGEMENT AS | Reduced | 236.4K | 111.8K | -124.6K |
| Oceanic Investment Management LTD | Sold Out | 112.4K | 0 | -112.4K |
| Global IMC LLC | Sold Out | 107.0K | 0 | -107.0K |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. | Sold Out | 105.0K | 0 | -105.0K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 158.6K | 260.3K | +101.7K |
| CastleKnight Management LP | New | 0 | 88.3K | +88.3K |
| GOLDMAN SACHS GROUP INC | Increased | 342.4K | 423.7K | +81.3K |
| Informed Momentum Co LLC | Sold Out | 80.6K | 0 | -80.6K |
| Thomist Capital Management, LP | Increased | 55.1K | 133.9K | +78.8K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 367.3K | 290.8K | -76.4K |
| MARSHALL WACE, LLP | Increased | 492.0K | 565.6K | +73.6K |
| MILLENNIUM MANAGEMENT LLC | Increased | 91.2K | 160.0K | +68.7K |
| Walleye Capital LLC | Reduced | 177.4K | 111.1K | -66.3K |
| BOOTHBAY FUND MANAGEMENT, LLC | Sold Out | 63.1K | 0 | -63.1K |
| Ruffer LLP | New | 0 | 59.1K | +59.1K |
| ExodusPoint Capital Management, LP | Reduced | 62.0K | 4.4K | -57.6K |
| UBS Group AG | Reduced | 90.9K | 39.7K | -51.3K |
| Aquatic Capital Management LLC | Reduced | 53.6K | 8.8K | -44.8K |
| Point72 Asset Management, L.P. | Reduced | 131.1K | 87.6K | -43.6K |
| XTX Topco Ltd | Increased | 38.4K | 81.8K | +43.3K |
| Marnell Management LLC | Increased | 53.3K | 96.3K | +43.0K |
| Penserra Capital Management LLC | Reduced | 58.6K | 16.4K | -42.2K |
| Engineers Gate Manager LP | Reduced | 71.5K | 30.8K | -40.7K |
| Balyasny Asset Management L.P. | New | 0 | 40.5K | +40.5K |
| GeoSphere Capital Management, LLC | Sold Out | 40.0K | 0 | -40.0K |
| CITADEL ADVISORS LLC | Increased | 5.2K | 44.2K | +39.0K |
| HRT FINANCIAL LP | Reduced | 54.7K | 16.2K | -38.5K |
| Cetera Investment Advisers | Reduced | 42.4K | 8.3K | -34.1K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 8.1K | 41.6K | +33.5K |
| BTG Pactual Asset Management US LLC | New | 0 | 32.3K | +32.3K |
| FOLKETRYGDFONDET | New | 0 | 32.3K | +32.3K |
| Precision Wealth Strategies, LLC | New | 0 | 31.3K | +31.3K |
| Allianz Asset Management GmbH | New | 0 | 30.5K | +30.5K |
| Skandinaviska Enskilda Banken AB (publ) | New | 0 | 29.7K | +29.7K |
| CREDIT AGRICOLE S A | Increased | 30.0K | 57.0K | +27.0K |
| JPMORGAN CHASE & CO | Reduced | 310.6K | 284.7K | -25.9K |
| Energy Income Partners, LLC | Reduced | 69.1K | 44.7K | -24.5K |
| Inspire Advisors, LLC | New | 0 | 23.4K | +23.4K |
| Persistent Asset Partners Ltd | New | 0 | 22.2K | +22.2K |
| Centiva Capital, LP | New | 0 | 21.6K | +21.6K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 99.0K | 119.4K | +20.4K |
| COMMONWEALTH EQUITY SERVICES, LLC | New | 0 | 20.2K | +20.2K |
| Massar Capital Management, LP | Reduced | 26.3K | 6.4K | -19.9K |
| Invesco Ltd. | Reduced | 63.2K | 44.0K | -19.2K |
| LPL Financial LLC | Increased | 7.2K | 25.8K | +18.6K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | 178.1K | 159.6K | -18.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | 0 | 18.3K | +18.3K |
| Quadrature Capital Ltd | Reduced | 69.2K | 51.0K | -18.2K |
| GRAHAM CAPITAL WEALTH MANAGEMENT, LLC | Increased | 52.6K | 68.9K | +16.4K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.