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.

Costamare Bulkers Holdings Ltd

CIK 0002033535CMDB· quarter ending 2026-06-30

Shares outstanding

24,180,707

as of 2025-12-31 · 20-F cover page, filed 2026-03-30

Held by 13F filers

5,111,964

21.1% of Common Stock

Holders

+1 vs 2026-03-31 · 10 new, 9 exited

Value

$89.8M

shares +0.1% vs prior quarter

Share classes (cover page of the 20-F filed 2026-03-30, as of 2025-12-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common Stock	CMDB · NYSE	24,180,472	5,111,964	21.1%	98	Y2001C101
Preferred Stock Purchase Rights	not listed	235	—	—

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
	Y2001C101	COM SHS	98	5,111,964	24,180,472	21.1%	$89.8M	—	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 (98 of 98 · Y2001C101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	DIMENSIONAL FUND ADVISORS LP	1,294,494	5.35%	$22.7M	-14,363 (-1.1%)
2	BlackRock, Inc.	556,263	2.30%	$9.8M	+16,567 (+3.1%)
3	AMERIPRISE FINANCIAL INC	425,412	1.76%	$7.5M	+48,011 (+12.7%)
4	AMERICAN CENTURY COMPANIES INC	317,984	1.32%	$5.6M	-2,762 (-0.9%)
5	Oceanic Investment Management LTD	277,778	1.15%	$4.9M	+22,101 (+8.6%)
6	RENAISSANCE TECHNOLOGIES LLC	196,146	0.81%	$3.4M	-8,293 (-4.1%)
7	MORGAN STANLEY	156,325	0.65%	$2.7M	-2,525 (-1.6%)
8	STATE STREET CORP	141,901	0.59%	$2.5M	-990 (-0.7%)
9	Qube Research & Technologies Ltd	117,562	0.49%	$2.1M	-4,338 (-3.6%)
10	GEODE CAPITAL MANAGEMENT, LLC	114,016	0.47%	$2.0M	+7,327 (+6.9%)
11	BOOTHBAY FUND MANAGEMENT, LLC	111,340	0.46%	$2.0M	+22,101 (+24.8%)
12	Nuveen, LLC	99,495	0.41%	$1.7M	-2,050 (-2.0%)
13	Russell Investments Group, Ltd.	95,867	0.40%	$1.7M	+1,442 (+1.5%)
14	Quantinno Capital Management LP	74,757	0.31%	$1.3M	+12,653 (+20.4%)
15	BRIDGEWAY CAPITAL MANAGEMENT, LLC	72,830	0.30%	$1.3M	-29,000 (-28.5%)
16	TWO SIGMA INVESTMENTS, LP	64,121	0.27%	$1.1M	+36,131 (+129.1%)
17	Walleye Capital LLC	60,678	0.25%	$1.1M	-53,899 (-47.0%)
18	VANGUARD PORTFOLIO MANAGEMENT LLC	58,059	0.24%	$1.0M	+7,001 (+13.7%)
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	54,994	0.23%	$966K	+73 (+0.1%)
20	GOLDMAN SACHS GROUP INC	54,343	0.22%	$954K	-19,956 (-26.9%)
21	NORTHERN TRUST CORP	52,987	0.22%	$930K	-287 (-0.5%)
22	BANK OF AMERICA CORP /DE/	51,874	0.21%	$911K	-8,116 (-13.5%)
23	MARSHALL WACE, LLP	49,515	0.20%	$869K	-7,344 (-12.9%)
24	LOS ANGELES CAPITAL MANAGEMENT LLC	39,781	0.16%	$699K	+7,157 (+21.9%)
25	JACOBS LEVY EQUITY MANAGEMENT, INC	37,842	0.16%	$665K	NEW
26	STRS OHIO	36,500	0.15%	$641K	+34,900 (+2181.3%)
27	JPMORGAN CHASE & CO	34,181	0.14%	$615K	+1,770 (+5.5%)
28	CITADEL ADVISORS LLC	33,458	0.14%	$588K	-24,698 (-42.5%)
29	MILLENNIUM MANAGEMENT LLC	30,811	0.13%	$541K	-12,192 (-28.4%)
30	CITIGROUP INC	29,958	0.12%	$526K	+15,460 (+106.6%)
31	HORIZON KINETICS ASSET MANAGEMENT LLC	27,580	0.11%	$484K	—
32	Moran Wealth Management, LLC	26,700	0.11%	$469K	+6,223 (+30.4%)
33	AQR CAPITAL MANAGEMENT LLC	25,235	0.10%	$443K	+12,218 (+93.9%)
34	Bank of New York Mellon Corp	24,693	0.10%	$434K	+982 (+4.1%)
35	PRELUDE CAPITAL MANAGEMENT, LLC	23,334	0.10%	$410K	—
36	Empowered Funds, LLC	23,030	0.10%	$404K	-19,000 (-45.2%)
37	Arax Advisory Partners	22,803	0.09%	$400K	+21,055 (+1204.5%)
38	Creative Planning	18,964	0.08%	$333K	-2,383 (-11.2%)
39	XTX Topco Ltd	15,053	0.06%	$264K	+331 (+2.2%)
40	Trexquant Investment LP	14,326	0.06%	$252K	-5,599 (-28.1%)
41	WINTON GROUP Ltd	13,323	0.06%	$234K	-21 (-0.2%)
42	Point72 Asset Management, L.P.	12,859	0.05%	$226K	+1,079 (+9.2%)
43	RHUMBLINE ADVISERS	12,256	0.05%	$215K	+240 (+2.0%)
44	ALLIANCEBERNSTEIN L.P.	12,172	0.05%	$188K	—
45	Savant Capital, LLC	11,020	0.05%	$194K	-31 (-0.3%)
46	Squarepoint Ops LLC	10,797	0.04%	$190K	NEW
47	ALGERT GLOBAL LLC	10,454	0.04%	$184K	NEW
48	WELLS FARGO & COMPANY/MN	9,139	0.04%	$160K	+4,314 (+89.4%)
49	FMR LLC	8,629	0.04%	$152K	+39 (+0.5%)
50	DEUTSCHE BANK AG\	7,040	0.03%	$124K	+232 (+3.4%)
51	BARCLAYS PLC	6,791	0.03%	$119K	-422 (-5.9%)
52	UBS Group AG	5,206	0.02%	$91K	-5,006 (-49.0%)
53	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	3,924	0.02%	$69K	-367 (-8.6%)
54	VANGUARD FIDUCIARY TRUST CO	3,530	0.01%	$62K	-106 (-2.9%)
55	GAMMA Investing LLC	2,557	0.01%	$45K	-43 (-1.7%)
56	BNP PARIBAS FINANCIAL MARKETS	2,539	0.01%	$45K	+644 (+34.0%)
57	NEW YORK STATE COMMON RETIREMENT FUND	2,218	0.01%	$39K	—
58	Police & Firemen's Retirement System of New Jersey	1,843	0.01%	$32K	—
59	ACADIAN ASSET MANAGEMENT LLC	1,619	0.01%	$28K	NEW
60	Parallel Advisors, LLC	1,596	0.01%	$28K	-347 (-17.9%)
61	Blue Trust, Inc.	1,424	0.01%	$25K	-328 (-18.7%)
62	Allworth Financial LP	1,105	0.00%	$19K	+1,041 (+1626.6%)
63	Tower Research Capital LLC (TRC)	1,017	0.00%	$18K	-1,297 (-56.1%)
64	Ameritas Investment Partners, Inc.	859	0.00%	$15K	—
65	ROYAL BANK OF CANADA	831	0.00%	$15K	-16 (-1.9%)
66	SIGNATUREFD, LLC	776	0.00%	$14K	-59 (-7.1%)
67	Legal & General Group Plc	740	0.00%	$13K	—
68	NISA INVESTMENT ADVISORS, LLC	412	0.00%	$7K	-265 (-39.1%)
69	Private Wealth Management Group, LLC	231	0.00%	$4K	—
70	JPL Wealth Management, LLC	205	0.00%	$4K	+201 (+5025.0%)
71	MassMutual Private Wealth & Trust, FSB	185	0.00%	$3K	—
72	Torren Management, LLC	176	0.00%	$3K	—
73	Sterling Capital Management LLC	153	0.00%	$3K	-122 (-44.4%)
74	Smartleaf Asset Management LLC	141	0.00%	$3K	—
75	JONES FINANCIAL COMPANIES LLLP	132	0.00%	$2K	+66 (+100.0%)
76	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	117	0.00%	$2K	-358 (-75.4%)
77	Buck Wealth Strategies, LLC	100	0.00%	$2K	NEW
78	OSAIC HOLDINGS, INC.	100	0.00%	$2K	—
79	EverSource Wealth Advisors, LLC	99	0.00%	$2K	-124 (-55.6%)
80	ARMSTRONG ADVISORY GROUP, INC	90	0.00%	$2K	—
81	Boreal Capital Management LLC	70	0.00%	$1K	NEW
82	Versant Capital Management, Inc	64	0.00%	$1K	—
83	Farther Finance Advisors, LLC	55	0.00%	$966	+1 (+1.9%)
84	RAFFA WEALTH MANAGEMENT, LLC	48	0.00%	$843	NEW
85	Essential Partners LLC	46	0.00%	$808	-291 (-86.4%)
86	HUNTINGTON NATIONAL BANK	46	0.00%	$811	—
87	IFP Advisors, Inc	38	0.00%	$667	—
88	Cornerstone Planning Group LLC	37	0.00%	$697	—
89	Basecamp Wealth Advisors LLC	28	0.00%	$492	+6 (+27.3%)
90	SJS Investment Consulting Inc.	22	0.00%	$388	+2 (+10.0%)
91	ASSETMARK, INC	21	0.00%	$369	—
92	Physician Wealth Advisors, Inc.	21	0.00%	$369	—
93	MATHER GROUP, LLC.	21	0.00%	$369	—
94	ROTHSCHILD INVESTMENT LLC	16	0.00%	$281	NEW
95	Covestor Ltd	15	0.00%	$0	—
96	Quarry LP	11	0.00%	$193	NEW
97	FIFTH THIRD BANCORP	9	0.00%	$158	-3 (-25.0%)
98	Clearstead Advisors, LLC	1	0.00%	$18	NEW

Exited since 2026-03-31 (9 filers; largest 9 shown)

Schonfeld Strategic Advisors LLC	−45,371
JANE STREET GROUP, LLC	−44,392
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	−14,546
CWM, LLC	−2,579
Root Financial Partners, LLC	−627
QUADRANT CAPITAL GROUP LLC	−376
Medallion Wealth Advisors, LLC	−130
MAI Capital Management	−39
Advisory Services Network, LLC	−7

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
Achillefs Konstantakopoulos	SCHEDULE 13D	2026-07-20	2026-07-17	4,979,706	20.5%
Costamare Shipping Services Ltd.	SCHEDULE 13D	2026-07-20	2026-07-17	810,612	3.3%
Konstantakopoulos Achillefs	SCHEDULE 13G/A	2026-07-06	2026-06-30	4,790,965	19.7%
Costamare Shipping Company S.A.	SCHEDULE 13D/A	2025-10-20	2025-10-16	846	0%
Kent Maritime Investments S.A.	SCHEDULE 13D/A	2025-10-20	2025-10-16	2,985,999	12.4%
Konstantakopoulos Konstantinos	SCHEDULE 13D/A	2025-10-20	2025-10-16	7,458,806	30.9%
Longshaw Maritime Investments S.A.	SCHEDULE 13D/A	2025-10-20	2025-10-16	945,318	3.9%
COSTAMARE SHIPPING Co S.A.	SCHEDULE 13D/A	2025-08-28	2025-08-26	846	0%
Dimensional Fund Advisors LP	SCHEDULE 13G	2025-07-15	2025-06-30	1,465,556	6.1%
Konstantakopoulos, Achillefs	SCHEDULE 13G	2025-05-06	2025-05-06	4,523,506	18.7%
Konstantakopoulos, Christos	SCHEDULE 13G	2025-05-06	2025-05-06	3,810,317	15.7%
Konstantakopoulos, Konstantinos	SCHEDULE 13D	2025-05-06	2025-05-06	6,933,667	28.6%

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.