Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Okeanis Eco Tankers Corp.

CIK 0001964954ECO· quarter ending 2026-06-30

Shares outstanding

35,433,544

as of 2025-12-31 · 20-F cover page, filed 2026-03-20

Held by 13F filers

9,775,886

27.6% of shares outstanding

Holders

117

+24 vs 2026-03-31 · 41 new, 17 exited

Value

$481.4M

shares +1.3% vs prior quarter

Share classes (cover page of the 20-F filed 2026-03-20, as of 2025-12-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ECO · NYSE	35,433,544	9,775,886	27.6%	117	Y64177101

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	Y64177101	SHS	117	9,775,886	35,433,544	27.6%	$481.4M	3 call / 4 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (117 of 117 · Y64177101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	QVT Financial LP	1,423,997	4.02%	$64.2M	—
2	FIL Ltd	829,399	2.34%	$41.1M	+205,215 (+32.9%)
3	BARCLAYS PLC	577,701	1.63%	$29.0M	+307,700 (+114.0%)
4	MARSHALL WACE, LLP	565,642	1.60%	$28.3M	+73,624 (+15.0%)
5	TWO SIGMA INVESTMENTS, LP	527,038	1.49%	$26.4M	+222,666 (+73.2%)
6	JANE STREET GROUP, LLC	488,409	1.38%	$24.1M	+162,109 (+49.7%)
7	GOLDMAN SACHS GROUP INC	423,692	1.20%	$21.2M	+81,261 (+23.7%)
8	Qube Research & Technologies Ltd	399,124	1.13%	$20.0M	+226,338 (+131.0%)
9	VR Advisory Services Ltd	343,729	0.97%	$17.2M	—
10	ACADIAN ASSET MANAGEMENT LLC	290,839	0.82%	$14.4M	-76,414 (-20.8%)
11	JPMORGAN CHASE & CO	284,695	0.80%	$14.1M	-25,875 (-8.3%)
12	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	260,310	0.73%	$13.0M	+101,689 (+64.1%)
13	Encompass Capital Advisors LLC	222,197	0.63%	$11.1M	-155,235 (-41.1%)
14	Portolan Capital Management, LLC	195,997	0.55%	$9.8M	-342,863 (-63.6%)
15	MORGAN STANLEY	193,694	0.55%	$9.7M	+134,836 (+229.1%)
16	MILLENNIUM MANAGEMENT LLC	159,952	0.45%	$8.0M	+68,712 (+75.3%)
17	VOLORIDGE INVESTMENT MANAGEMENT, LLC	159,581	0.45%	$8.0M	-18,552 (-10.4%)
18	Thomist Capital Management, LP	133,922	0.38%	$6.7M	+78,822 (+143.1%)
19	BNP PARIBAS FINANCIAL MARKETS	119,363	0.34%	$6.0M	+20,401 (+20.6%)
20	FEARNLEY ASSET MANAGEMENT AS	111,836	0.32%	$5.5M	-124,558 (-52.7%)
21	Walleye Capital LLC	111,104	0.31%	$5.6M	-66,313 (-37.4%)
22	Marnell Management LLC	96,294	0.27%	$4.8M	+43,041 (+80.8%)
23	CastleKnight Management LP	88,300	0.25%	$4.4M	NEW
24	RAYMOND JAMES FINANCIAL INC	88,258	0.25%	$4.4M	+5,203 (+6.3%)
25	Point72 Asset Management, L.P.	87,559	0.25%	$4.4M	-43,586 (-33.2%)
26	XTX Topco Ltd	81,765	0.23%	$4.1M	+43,318 (+112.7%)
27	Militia Capital Management LLC	80,000	0.23%	$4.0M	-130,000 (-61.9%)
28	BANK OF AMERICA CORP /DE/	72,026	0.20%	$3.6M	-206,279 (-74.1%)
29	GRAHAM CAPITAL WEALTH MANAGEMENT, LLC	68,948	0.19%	$3.5M	+16,353 (+31.1%)
30	Ruffer LLP	59,137	0.17%	$3.0M	NEW
31	CREDIT AGRICOLE S A	57,000	0.16%	$2.9M	+27,000 (+90.0%)
32	Quadrature Capital Ltd	51,011	0.14%	$2.6M	-18,235 (-26.3%)
33	Energy Income Partners, LLC	44,659	0.13%	$2.2M	-24,459 (-35.4%)
34	CITADEL ADVISORS LLC	44,151	0.12%	$2.2M	+38,987 (+755.0%)
35	Invesco Ltd.	44,011	0.12%	$2.2M	-19,179 (-30.4%)
36	DIMENSIONAL FUND ADVISORS LP	41,643	0.12%	$2.1M	+33,524 (+412.9%)
37	Balyasny Asset Management L.P.	40,461	0.11%	$2.0M	NEW
38	UBS Group AG	39,676	0.11%	$2.0M	-51,256 (-56.4%)
39	CITIGROUP INC	33,876	0.10%	$1.7M	+6,599 (+24.2%)
40	BlackRock, Inc.	32,902	0.09%	$1.6M	-233,650 (-87.7%)
41	BTG Pactual Asset Management US LLC	32,280	0.09%	$1.6M	NEW
42	FOLKETRYGDFONDET	32,274	0.09%	$1.6M	NEW
43	CVFG LLC	31,665	0.09%	$1.6M	—
44	Precision Wealth Strategies, LLC	31,313	0.09%	$1.6M	NEW
45	Engineers Gate Manager LP	30,762	0.09%	$1.5M	-40,703 (-57.0%)
46	Allianz Asset Management GmbH	30,470	0.09%	$1.5M	NEW
47	Skandinaviska Enskilda Banken AB (publ)	29,669	0.08%	$1.5M	NEW
48	Glenorchy Capital Ltd	26,198	0.07%	$1.3M	-1,508 (-5.4%)
49	LPL Financial LLC	25,800	0.07%	$1.3M	+18,603 (+258.5%)
50	Jain Global LLC	25,002	0.07%	$1.3M	+14,100 (+129.3%)
51	NAVELLIER & ASSOCIATES INC	24,815	0.07%	$1.2M	+4,976 (+25.1%)
52	Inspire Advisors, LLC	23,388	0.07%	$1.2M	NEW
53	Uniplan Investment Counsel, Inc.	22,345	0.06%	$1.1M	-485 (-2.1%)
54	Persistent Asset Partners Ltd	22,187	0.06%	$1.1M	NEW
55	Centiva Capital, LP	21,563	0.06%	$1.1M	NEW
56	COMMONWEALTH EQUITY SERVICES, LLC	20,152	0.06%	$1.0M	NEW
57	Triumph Capital Management	20,112	0.06%	$1.0M	+312 (+1.6%)
58	Kovack Advisors, Inc.	18,646	0.05%	$935K	—
59	SUSQUEHANNA INTERNATIONAL GROUP, LLP	18,342	0.05%	$919K	NEW
60	DAVENPORT & Co LLC	18,148	0.05%	$910K	+5,958 (+48.9%)
61	ENVESTNET ASSET MANAGEMENT INC	17,963	0.05%	$900K	+12,991 (+261.3%)
62	Manatuck Hill Partners, LLC	17,700	0.05%	$887K	-2,300 (-11.5%)
63	Penserra Capital Management LLC	16,415	0.05%	$822K	-42,212 (-72.0%)
64	HRT FINANCIAL LP	16,241	0.05%	$813K	-38,463 (-70.3%)
65	SPROTT INC.	15,800	0.04%	$792K	—
66	Cambridge Investment Research Advisors, Inc.	13,643	0.04%	$684K	+7,114 (+109.0%)
67	Veracity Capital LLC	12,951	0.04%	$649K	NEW
68	NORTHERN TRUST CORP	12,275	0.03%	$615K	NEW
69	Numerai GP LLC	10,291	0.03%	$516K	-4,612 (-30.9%)
70	Regatta Research & Money Management	10,163	0.03%	$509K	NEW
71	Nuveen, LLC	9,715	0.03%	$487K	NEW
72	FOX RUN MANAGEMENT, L.L.C.	9,699	0.03%	$486K	NEW
73	Y-Intercept (Hong Kong) Ltd	9,503	0.03%	$476K	NEW
74	State of Wyoming	9,340	0.03%	$468K	+1,217 (+15.0%)
75	Aquatic Capital Management LLC	8,783	0.02%	$440K	-44,824 (-83.6%)
76	Cetera Investment Advisers	8,318	0.02%	$417K	-34,085 (-80.4%)
77	Janney Montgomery Scott LLC	8,041	0.02%	$403K	NEW
78	OneAscent Investment Solutions LLC	8,001	0.02%	$401K	NEW
79	Massar Capital Management, LP	6,387	0.02%	$320K	-19,933 (-75.7%)
80	Magnetar Financial LLC	5,847	0.02%	$293K	+758 (+14.9%)
81	MONTCHANIN ASSET MANAGEMENT, LLC	5,375	0.02%	$269K	NEW
82	Marex Group Ltd	5,102	0.01%	$256K	NEW
83	SIH Partners, LLLP	5,013	0.01%	$251K	NEW
84	COMMERCE BANK	5,000	0.01%	$251K	+1,000 (+25.0%)
85	MML INVESTORS SERVICES, LLC	4,838	0.01%	$242K	+513 (+11.9%)
86	Mariner, LLC	4,708	0.01%	$236K	NEW
87	ExodusPoint Capital Management, LP	4,419	0.01%	$221K	-57,565 (-92.9%)
88	Jefferies Financial Group Inc.	4,418	0.01%	$218K	NEW
89	Schonfeld Strategic Advisors LLC	4,179	0.01%	$209K	NEW
90	WELLS FARGO & COMPANY/MN	3,451	0.01%	$173K	-3,181 (-48.0%)
91	NewEdge Advisors, LLC	2,980	0.01%	$149K	NEW
92	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	2,775	0.01%	$137K	-12,297 (-81.6%)
93	ROYAL BANK OF CANADA	2,695	0.01%	$135K	+306 (+12.8%)
94	Caitong International Asset Management Co., Ltd	2,442	0.01%	$122K	-2,686 (-52.4%)
95	MCGUIRE CAPITAL ADVISORS INC	2,285	0.01%	$115K	NEW
96	OSAIC HOLDINGS, INC.	2,260	0.01%	$113K	+925 (+69.3%)
97	Quantbot Technologies LP	2,001	0.01%	$100K	-2,251 (-52.9%)
98	JONES FINANCIAL COMPANIES LLLP	1,321	0.00%	$66K	NEW
99	SIMPLEX TRADING, LLC	1,264	0.00%	$63K	NEW
100	MACQUARIE GROUP LTD	1,200	0.00%	$60K	NEW
101	FIFTH THIRD BANCORP	567	0.00%	$28K	—
102	UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO	402	0.00%	$20K	—
103	Parallel Advisors, LLC	279	0.00%	$14K	NEW
104	Rockefeller Capital Management L.P.	200	0.00%	$10K	—
105	Institute for Wealth Management, LLC.	93	0.00%	$5K	NEW
106	LANARK FINANCIAL, INC.	92	0.00%	$5K	NEW
107	HARBOUR INVESTMENTS, INC.	90	0.00%	$5K	—
108	EverSource Wealth Advisors, LLC	83	0.00%	$4K	NEW
109	Cornerstone Financial Management LLC	82	0.00%	$4K	—
110	Ancora Advisors LLC	50	0.00%	$3K	NEW
111	Clearstead Advisors, LLC	44	0.00%	$2K	NEW
112	Farther Finance Advisors, LLC	22	0.00%	$1K	NEW
113	Dogwood Wealth Management LLC	21	0.00%	$1K	—
114	TD PRIVATE CLIENT WEALTH LLC	17	0.00%	$852	—
115	Arax Advisory Partners	6	0.00%	$301	NEW
116	Quarry LP	5	0.00%	$251	NEW
117	SBI Securities Co., Ltd.	2	0.00%	$100	+1 (+100.0%)

Exited since 2026-03-31 (17 filers; largest 17 shown)

Oceanic Investment Management LTD	−112,371
Global IMC LLC	−107,025
DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.	−105,038
Informed Momentum Co LLC	−80,569
BOOTHBAY FUND MANAGEMENT, LLC	−63,149
GeoSphere Capital Management, LLC	−40,000
Tidal Investments LLC	−13,562
PRELUDE CAPITAL MANAGEMENT, LLC	−8,414
D. E. Shaw & Co., Inc.	−8,340
SG Americas Securities, LLC	−7,073
EPACRIA CAPITAL PARTNERS, LLC	−5,857
Private Advisor Group, LLC	−5,069
GTS SECURITIES LLC	−4,788
Dynamic Technology Lab Private Ltd	−4,753
Tower Research Capital LLC (TRC)	−232
Ascentis Independent Advisors	−25
Root Financial Partners, LLC	−13

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Hospitality Assets Corp.	SCHEDULE 13G/A	2026-03-18	2026-03-18	6,641,934	17%
Themistoklis Alafouzos	SCHEDULE 13G/A	2026-03-18	2026-03-18	6,641,934	17%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.