ECO · Okeanis Eco Tankers Corp.

$70.56 +1.54 (+2.23%)

Market Cap

$2.69B

39.04M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 117

Total Value: $496,479,086

Total Shares: 9,905,809

Showing 1–100 of 123 holdings by value · page 1 of 2

Institutional Ownership Trend

11 quarters

Holder Concentration

Across 117 13F filers · Δ vs Mar 31, 2026

Top Holder

14.4%

−0.6 pts

Top 5

39.7%

+3.4 pts

Top 10

59.7%

+5.6 pts

HHI

506

Broadly held+29

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +24

Institutional value: +3.2%

Shares held: +4.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BARCLAYS PLC	+307,700	577,701
Mega Qube Research & Technologies Ltd	+226,338	399,124
Mega TWO SIGMA INVESTMENTS, LP	+222,666	527,038
Mega JANE STREET GROUP, LLC	+210,409	536,709
Mega FIL Ltd	+205,215	829,399

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid Portolan Capital Management, LLC	−342,863	195,997
Mega BlackRock, Inc.	−233,650	32,902
Mega BANK OF AMERICA CORP /DE/	−206,279	72,026
Mid Encompass Capital Advisors LLC	−155,235	222,197
Small FEARNLEY ASSET MANAGEMENT AS	−124,558	111,836

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid CastleKnight Management LP	88,300	$4,425,596
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	85,142	$4,267,317
Mid Ruffer LLP	59,137	$2,963,946
Large Balyasny Asset Management L.P.	40,461	$2,027,905
Mid BTG Pactual Asset Management US LLC	32,280	$1,617,873

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Micro Oceanic Investment Management LTD	112,371	$5,684,848
Micro Global IMC LLC	107,025	$5,414,394
Mid DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.	105,038	$5,313,872
Mid Informed Momentum Co LLC	80,569	$4,075,985
Mid BOOTHBAY FUND MANAGEMENT, LLC	63,149	$3,194,707

Filter: New 41 Increased 35 Reduced 29 Sold out 17 Unchanged 12

Showing 100 of 123

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

QVT Financial LP

$71,370,729

14.38%

1,423,997

FIL Ltd

$41,569,477

8.37%

829,399

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIL Investments International	829,399	$41,569,477	100.0%	Defined

BARCLAYS PLC

$28,954,374

5.83%

577,701

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	282,284	$14,148,074	48.9%	Defined
BARCLAYS CAPITAL SECURITIES LTD	295,417	$14,806,300	51.1%	Defined

MARSHALL WACE, LLP

$28,349,976

5.71%

565,642

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	519,036	$26,014,084	91.8%	Other
MARSHALL WACE ASIA Ltd	46,606	$2,335,892	8.2%	Other

TWO SIGMA INVESTMENTS, LP

$26,415,144

5.32%

527,038

JANE STREET GROUP, LLC

$24,479,059

4.93%

488,409

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	184,284	$9,236,314	37.7%	Defined
Jane Street Global Trading, LLC	304,125	$15,242,745	62.3%	Defined

GOLDMAN SACHS GROUP INC

$21,235,442

4.28%

423,692

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	30,596	$1,533,471	7.2%	Defined
GOLDMAN SACHS INTERNATIONAL	393,096	$19,701,971	92.8%	Defined

Qube Research & Technologies Ltd

$20,004,094

4.03%

399,124

VR Advisory Services Ltd

$17,227,697

3.47%

343,729

ACADIAN ASSET MANAGEMENT LLC

$14,576,850

2.94%

290,839

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	290,839	$14,576,850	100.0%	Defined

JPMORGAN CHASE & CO

$14,268,912

2.87%

284,695

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	147	$7,367	0.1%	Defined
J.P. Morgan Securities LLC	19,084	$956,490	6.7%	Defined
J.P. Morgan Securities plc	265,464	$13,305,055	93.2%	Defined

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$13,046,737

2.63%

260,310

Encompass Capital Advisors LLC

$11,136,513

2.24%

222,197

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Encompass Capital Master Fund LP joint	222,197	$11,136,513	100.0%	Defined

Portolan Capital Management, LLC

$9,823,369

1.98%

195,997

MORGAN STANLEY

$9,707,941

1.96%

193,694

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	676	$33,881	0.3%	Defined
MORGAN STANLEY & CO. LLC	14,003	$701,830	7.2%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	171,645	$8,602,847	88.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,648	$82,597	0.9%	Defined
Morgan Stanley Bank, N.A.	5,722	$286,786	3.0%	Defined

MILLENNIUM MANAGEMENT LLC

$8,016,794

1.61%

159,952

VOLORIDGE INVESTMENT MANAGEMENT, LLC

$7,998,199

1.61%

159,581

Thomist Capital Management, LP

$6,712,170

1.35%

133,922

BNP PARIBAS ARBITRAGE, SA

$5,982,473

1.20%

119,363

FEARNLEY ASSET MANAGEMENT AS

$5,605,220

1.13%

111,836

Walleye Capital LLC

$5,568,532

1.12%

111,104

Marnell Management LLC

$4,826,255

0.97%

96,294

CastleKnight Management LP

$4,425,596

0.89%

88,300

RAYMOND JAMES FINANCIAL INC

$4,423,490

0.89%

88,258

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	4,780	$239,573	5.4%	Defined
Raymond James Financial Services Advisors, Inc.	83,478	$4,183,917	94.6%	Defined

Point72 Asset Management, L.P.

$4,388,457

0.88%

87,559

XTX Topco Ltd

$4,098,061

0.83%

81,765

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	81,765	$4,098,061	100.0%	Defined

Militia Capital Management LLC

$4,009,600

0.81%

80,000

BANK OF AMERICA CORP /DE/

$3,609,942

0.73%

72,026

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	6,570	$329,288	9.1%	Defined
MERRILL LYNCH INTERNATIONAL	60,975	$3,056,067	84.7%	Defined
BofA Securities Europe SA	4,481	$224,587	6.2%	Defined

GRAHAM CAPITAL WEALTH MANAGEMENT, LLC

$3,455,673

0.70%

68,948

Ruffer LLP

$2,963,946

0.60%

59,137

CREDIT AGRICOLE S A

$2,856,840

0.58%

57,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Credit Agricole Corporate & Investment Bank joint	57,000	$2,856,840	100.0%	Defined

Quadrature Capital Ltd

$2,556,671

0.51%

51,011

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	51,011	$2,556,671	100.0%	Other

JANE STREET GROUP, LLC

$2,420,796

0.49%

48,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	48,300	$2,420,796	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$2,260,412

0.46%

45,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	45,100	$2,260,412	100.0%	Other

Energy Income Partners, LLC

$2,238,309

0.45%

44,659

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIRST TRUST ADVISORS LP	25,859	$1,296,053	57.9%	Other
Held directly	18,800	$942,256	42.1%	Sole

CITADEL ADVISORS LLC

$2,212,848

0.45%

44,151

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	39,442	$1,976,833	89.3%	Defined
Held directly	4,709	$236,015	10.7%	Defined

Invesco Ltd.

$2,205,831

0.44%

44,011

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Capital Management LLC	44,011	$2,205,831	100.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$2,087,146

0.42%

41,643

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	896	$44,907	2.2%	Defined
Dimensional Ireland Ltd	6,669	$334,250	16.0%	Defined
Held directly	34,078	$1,707,989	81.8%	Sole

Balyasny Asset Management L.P.

$2,027,905

0.41%

40,461

UBS Group AG

$1,988,561

0.40%

39,676

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	39,676	$1,988,561	100.0%	Defined

CITIGROUP INC

$1,697,864

0.34%

33,876

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	33,876	$1,697,864	100.0%	Defined

BlackRock, Inc.

$1,649,047

0.33%

32,902

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	8,508	$426,420	25.9%	Sole
BlackRock Institutional Trust Company, N.A.	24,394	$1,222,627	74.1%	Sole

BTG Pactual Asset Management US LLC

$1,617,873

0.33%

32,280

FOLKETRYGDFONDET

$1,617,572

0.33%

32,274

CVFG LLC

$1,587,049

0.32%

31,665

Precision Wealth Strategies, LLC

$1,569,407

0.32%

31,313

Engineers Gate Manager LP

$1,541,791

0.31%

30,762

Allianz Asset Management GmbH

$1,527,156

0.31%

30,470

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Allianz Global Investors GmbH	30,470	$1,527,156	100.0%	Defined

Skandinaviska Enskilda Banken AB (publ)

$1,487,010

0.30%

29,669

Glenorchy Capital Ltd

$1,313,043

0.26%

26,198

LPL Financial LLC

$1,293,096

0.26%

25,800

Jain Global LLC

$1,253,100

0.25%

25,002

NAVELLIER & ASSOCIATES INC

$1,243,727

0.25%

24,815

Inspire Advisors, LLC

$1,172,206

0.24%

23,388

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Inspire Investing, LLC	23,388	$1,172,206	100.0%	Defined

Uniplan Investment Counsel, Inc.

$1,119,931

0.23%

22,345

Persistent Asset Partners Ltd

$1,112,011

0.22%

22,187

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,087,604

0.22%

21,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	21,700	$1,087,604	100.0%	Other

Centiva Capital, LP

$1,080,737

0.22%

21,563

COMMONWEALTH EQUITY SERVICES, LLC

$1,010,018

0.20%

20,152

Triumph Capital Management

$1,008,013

0.20%

20,112

Kovack Advisors, Inc.

$934,537

0.19%

18,646

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$919,301

0.19%

18,342

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	18,342	$919,301	100.0%	Other

DAVENPORT & Co LLC

$909,577

0.18%

18,148

ENVESTNET ASSET MANAGEMENT INC

$900,305

0.18%

17,963

Manatuck Hill Partners, LLC

$887,124

0.18%

17,700

Penserra Capital Management LLC

$822,719

0.17%

16,415

HRT FINANCIAL LP

$813,998

0.16%

16,241

SPROTT INC.

$791,896

0.16%

15,800

Veracity Capital LLC

$649,104

0.13%

12,951

NORTHERN TRUST CORP

$615,223

0.12%

12,275

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	12,275	$615,223	100.0%	Defined

CITADEL ADVISORS LLC

$561,344

0.11%

11,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	11,200	$561,344	100.0%	Defined

Numerai GP LLC

$515,784

0.10%

10,291

Regatta Research & Money Management

$509,367

0.10%

10,163

Nuveen, LLC

$486,915

0.10%

9,715

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	9,715	$486,915	100.0%	Defined

FOX RUN MANAGEMENT, L.L.C.

$486,113

0.10%

9,699

Y-Intercept (Hong Kong) Ltd

$476,290

0.10%

9,503

State of Wyoming

$468,120

0.09%

9,340

Aquatic Capital Management LLC

$440,203

0.09%

8,783

CITADEL ADVISORS LLC

$431,032

0.09%

8,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	8,600	$431,032	100.0%	Defined

Cetera Investment Advisers

$416,898

0.08%

8,318

Janney Montgomery Scott LLC

$403,014

0.08%

8,041

OneAscent Investment Solutions LLC

$401,010

0.08%

8,001

Cambridge Investment Research Advisors, Inc.

$341,617

0.07%

6,816

Massar Capital Management, LP

$320,116

0.06%

6,387

Magnetar Financial LLC

$293,051

0.06%

5,847

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Magnetar Asset Management LLC	11	$551	0.2%	Sole
Held directly	5,836	$292,500	99.8%	Sole

MONTCHANIN ASSET MANAGEMENT, LLC

$269,395

0.05%

5,375

Marex Group plc

$255,712

0.05%

5,102

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marex Financial	5,102	$255,712	100.0%	Defined

SIH Partners, LLLP

$251,251

0.05%

5,013

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Susquehanna International Group Ltd.	5,013	$251,251	100.0%	Other

COMMERCE BANK

$250,600

0.05%

5,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
COMMERCE BANCSHARES INC /MO/	5,000	$250,600	100.0%	Defined

MML INVESTORS SERVICES, LLC

$242,480

0.05%

4,838

Mariner, LLC

$235,964

0.05%

4,708

ExodusPoint Capital Management, LP

$221,480

0.04%

4,419

Jefferies Financial Group Inc.

$221,430

0.04%

4,418

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jefferies International Ltd	4,418	$221,430	100.0%	Defined

Schonfeld Strategic Advisors LLC

$209,451

0.04%

4,179

WELLS FARGO & COMPANY/MN

$172,963

0.03%

3,451

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	2,960	$148,355	85.8%	Defined
WELLS FARGO CLEARING SERVICES, LLC	491	$24,608	14.2%	Defined

NewEdge Advisors, LLC

$149,357

0.03%

2,980

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$139,083

0.03%

2,775

ROYAL BANK OF CANADA

$135,073

0.03%

2,695

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	2,695	$135,073	100.0%	Defined

Caitong International Asset Management Co., Ltd

$122,393

0.02%

2,442

MCGUIRE CAPITAL ADVISORS INC

$114,524

0.02%

2,285

Key facts CIK 1964954 CUSIP Y64177101 13F (30d) 98 filings 96 filers Visit website Investor relations