Okeanis Eco Tankers Corp.

ECO

Exchange: NYSE
Industry: Deep Sea Foreign Transportation of Freight
SEC CIK: 0001964954

SEC filings (opens in a new tab)

In the last 90 days, Okeanis Eco Tankers Corp. insiders filed 0 open-market purchases and 1 sale; 117 institutions reported holding it in 13F filings for Q2 2026, worth $481.1M in total; no superinvestor holds it.

Q4 2025 vs. Q3 2025

How the institutions holding Okeanis Eco Tankers Corp. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of ECO: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	40	1	64	+25
Shares	3.46M	2.61K	7.10M	+3.65M (+105.5%)
Value	$97.2M	$76.5K	$235.3M	+$138.2M (+142.2%)

1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (33)

Institutions that held Okeanis Eco Tankers Corp. at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to ECO in Q4 2025
Institution	Shares	Value	% of portfolio
Encompass Capital Advisors LLC	810,154	$27.4M	1.31%
Fearnley Asset Management AS	555,247	$18.7M	8.58%
Marshall Wace, LLP	322,423	$10.9M	0.01%
Portolan Capital Management, LLC	161,815	$5.48M	0.29%
JPMorgan Chase & Co	154,325	$5.22M	0.00%
Walleye Capital LLC	103,186	$3.49M	0.02%
Counterpoint Mutual Funds LLC	100,179	$3.39M	0.25%
Jane Street Group, LLC	79,404	$2.67M	0.00%
Qube Research & Technologies Ltd	74,162	$2.51M	0.00%
GeoSphere Capital Management, LLC	72,500	$2.45M	1.69%
Quadrature Capital Ltd	58,643	$1.98M	0.02%
Engineers Gate Manager LP	51,885	$1.76M	0.02%
BNP Paribas Arbitrage, SA	30,395	$1.03M	0.00%
Credit Agricole S A	30,000	$1.02M	0.00%
Boothbay Fund Management, LLC	25,742	$871.1K	0.02%
Numerai GP LLC	21,077	$713.2K	0.09%
Invesco Ltd.	19,623	$664.0K	0.00%
Kovack Advisors, Inc.	18,796	$636.1K	0.03%
Navellier & Associates Inc	18,657	$631.4K	0.07%
ExodusPoint Capital Management, LP	14,461	$489.4K	0.01%
Magnetar Financial LLC	14,210	$480.9K	0.00%
Schonfeld Strategic Advisors LLC	12,697	$429.7K	0.00%
Aquatic Capital Management LLC	12,649	$428.0K	0.01%
Jain Global LLC	12,102	$409.5K	0.00%
Jump Financial, LLC	10,700	$362.1K	0.00%
LPL Financial LLC	10,125	$342.6K	0.00%
Marnell Management LLC	8,057	$272.6K	0.21%
PharVision Advisers, LLC	7,696	$260.4K	0.13%
Gotham Asset Management, LLC	7,168	$242.6K	0.00%
Advisor Group Holdings, Inc.	1,200	$40.6K	0.00%
University of Texas/Texas Am Investment Managment Co	402	$13.6K	0.00%
Cornerstone Financial Management LLC	82	$2.77K	0.00%
SRS Capital Advisors, Inc.	6	$203	0.00%

Sold out (8)

Institutions that held Okeanis Eco Tankers Corp. at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of ECO in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
SG Americas Securities, LLC	443,695	$13.0M
Macquarie Group Ltd	55,699	$1.63M
Militia Capital Partners, LP	35,000	$1.02M
Corigliano Investment Advisers, LLC	10,100	$295.6K
S.E.E.D. Planning Group LLC	8,000	$234.2K
Tower Research Capital LLC (TRC)	541	$15.8K
Federation des caisses Desjardins du Quebec	170	$4.97K
MB, Levis & Associates, LLC	100	$2.93K

Not filed for Q4 2025 yet (1)

Institutions that held Okeanis Eco Tankers Corp. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ECO in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Cubist Systematic Strategies, LLC	2,612	$76.5K