Vault-13

COSTAMARE BULKERS HLDGS LTD CMDB

COM SHS · Common Stock · CUSIP Y2001C101

99 institutional holders +2 vs Q1 2026
5,088,6255.1m shares reported held*
$89.3mreported value*
11 new 31 added 36 reduced 8 sold out net bought ≈ $176.3k (+10.0k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($413.4k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $17.56.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q2 25: 90Q3 25: 92Q4 25: 91Q1 26: 97Q2 26: 9999Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 202590
Q3 202592
Q4 202591
Q1 202697
Q2 202699

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q3 25: 45 bought or addedQ3 25: 47 cut or sold outQ3 25Q4 25: 37 bought or addedQ4 25: 47 cut or sold outQ4 25Q1 26: 43 bought or addedQ1 26: 34 cut or sold outQ1 26Q2 26: 42 bought or addedQ2 26: 44 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20254547
Q4 20253747
Q1 20264334
Q2 20264244

Biggest buyers

AMERIPRISE FINANCIAL INC Added +48,011+48.0k
JACOBS LEVY EQUITY MANAGEMENT, INC New +37,842+37.8k
TWO SIGMA INVESTMENTS, LP Added +36,131+36.1k
STRS OHIO Added +34,900+34.9k
BOOTHBAY FUND MANAGEMENT, LLC Added +22,101+22.1k
Oceanic Investment Management LTD Added +22,101+22.1k
Arax Advisory Partners Added +21,055+21.1k
BlackRock, Inc. Added +16,567+16.6k
CITIGROUP INC Added +15,460+15.5k
Quantinno Capital Management LP Added +12,653+12.7k

Biggest sellers

Walleye Capital LLC Reduced -53,899-53.9k
Schonfeld Strategic Advisors LLC Sold out -45,371-45.4k
JANE STREET GROUP, LLC Sold out -44,392-44.4k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Reduced -29,000-29.0k
CITADEL ADVISORS LLC Reduced -24,698-24.7k
GOLDMAN SACHS GROUP INC Reduced -19,956-20.0k
Empowered Funds, LLC Reduced -19,000-19.0k
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Sold out -14,546-14.5k
DIMENSIONAL FUND ADVISORS LP Reduced -14,363-14.4k
MILLENNIUM MANAGEMENT LLC Reduced -12,192-12.2k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Konstantakopoulos Konstantinos 13D · may seek influence +1.2 pts · filed 2025-10-20 30.9% +1.2 pts 7.5m≈ $131.0m 2025-10-20
Konstantakopoulos Achillefs 13D · may seek influence +0.8 pts · filed 2026-07-20
Stated purposeMr. Konstantakopoulos is the direct and indirect owner of the Common Stock identified on the cover pages to this Schedule 13D. The Reporting Persons acquired the securities reported herein for investment purposes. The Reporting Persons intend to review their holdings in the Issuer on a continuing basis and, depending upon the price and availability of the Issuer's securities, subsequent developments affecting the Issuer, the business prospects of the Issuer, general stock market and economic conditions, tax considerations, investment considerations and/or other factors deemed relevant, may consider increasing or decreasing their investment in the Issuer, including through one or more open market purchases or private transactions. The timing and amount of such acquisitions or dispositions … Full filing
20.5% +0.8 pts 5.0m≈ $87.4m 2026-07-20
Konstantakopoulos Christos 13G · exempt (held before listing) new · filed 2025-05-06 15.7% new 3.8m≈ $66.9m 2025-05-06
DIMENSIONAL FUND ADVISORS LP 13G · institution new · filed 2025-07-15 6.1% new 1.5m≈ $25.7m 2025-07-15

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 1 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 1 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20261$9820——
Q2 20260—0——
Q3 20260—1$442.9k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-06 Zikos Grigorios Chief Executive Officer, director · See Footnote Sold 24,203 $18.30 $442.9k24.2k shares -100%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 1,294,4941.3m $22.7m $22.7m 0.00% Reduced -14.4k -14,363
2 BlackRock, Inc. 0.00% of their portfolio New York, NY 556,263556.3k $9.8m $9.8m 0.00% Added +16.6k +16,567
3 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 425,412425.4k $7.5m $7.5m 0.00% Added +48.0k +48,011
4 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 317,984318.0k $5.6m $5.6m 0.00% Reduced -2.8k -2,762
5 Oceanic Investment Management LTD 6.33% of their portfolio DOUGLAS, Y8 277,778277.8k $4.9m $4.9m 6.33% Added +22.1k +22,101
6 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 196,146196.1k $3.4m $3.4m 0.00% Reduced -8.3k -8,293
7 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 156,325156.3k $2.7m $2.7m 0.00% Reduced -2.5k -2,525
8 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 141,901141.9k $2.5m $2.5m 0.00% Reduced -990 -990
9 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 117,562117.6k $2.1m $2.1m 0.00% Reduced -4.3k -4,338
10 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 114,016114.0k $2.0m $2.0m 0.00% Added +7.3k +7,327
11 BOOTHBAY FUND MANAGEMENT, LLC 0.04% of their portfolio NEW YORK, NY 111,340111.3k $2.0m $2.0m 0.04% Added +22.1k +22,101
12 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 99,49599.5k $1.7m $1.7m 0.00% Reduced -2.0k -2,050
13 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 95,86795.9k $1.7m $1.7m 0.00% Added +1.4k +1,442
14 Quantinno Capital Management LP 0.00% of their portfolio NEW YORK, NY 74,75774.8k $1.3m $1.3m 0.00% Added +12.7k +12,653
15 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio HOUSTON, TX 72,83072.8k $1.3m $1.3m 0.02% Reduced -29.0k -29,000
16 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 64,12164.1k $1.1m $1.1m 0.00% Added +36.1k +36,131
17 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 60,67860.7k $1.1m $1.1m 0.01% Reduced -53.9k -53,899
18 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 58,05958.1k $1.0m $1.0m 0.00% Added +7.0k +7,001
19 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 54,99455.0k $965.7k $965.7k 0.00% Added +73 +73
20 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 54,34354.3k $954.3k $954.3k 0.00% Reduced -20.0k -19,956
21 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 52,98753.0k $930.5k $930.5k 0.00% Reduced -287 -287
22 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 51,87451.9k $910.9k $910.9k 0.00% Reduced -8.1k -8,116
23 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 49,51549.5k $869.5k $869.5k 0.00% Reduced -7.3k -7,344
24 LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio LOS ANGELES, CA 39,78139.8k $698.6k $698.6k 0.00% Added +7.2k +7,157
25 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 37,84237.8k $664.5k $664.5k 0.00% New
26 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 36,50036.5k $640.9k $640.9k 0.00% Added +34.9k +34,900
27 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 34,18134.2k $614.9k $614.9k 0.00% Added +1.8k +1,770
28 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 33,45833.5k $587.5k $587.5k 0.00% Reduced -24.7k -24,698
29 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 30,81130.8k $541.0k $541.0k 0.00% Reduced -12.2k -12,192
30 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 29,95830.0k $526.1k $526.1k 0.00% Added +15.5k +15,460
31 HORIZON KINETICS ASSET MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 27,58027.6k $484.3k $484.3k 0.01% Unchanged
32 Moran Wealth Management, LLC 0.01% of their portfolio NAPLES, FL 26,70026.7k $468.9k $468.9k 0.01% Added +6.2k +6,223
33 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 25,23525.2k $443.1k $443.1k 0.00% Added +12.2k +12,218
34 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 24,69324.7k $433.6k $433.6k 0.00% Added +982 +982
35 PRELUDE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio NEW YORK, NY 23,33423.3k $409.7k $409.7k 0.03% Unchanged
36 Empowered Funds, LLC 0.00% of their portfolio NEWTOWN SQUARE, PA 23,03023.0k $404.4k $404.4k 0.00% Reduced -19.0k -19,000
37 Arax Advisory Partners 0.00% of their portfolio NEW YORK, NY 22,80322.8k $400.4k $400.4k 0.00% Added +21.1k +21,055
38 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 18,96419.0k $333.0k $333.0k 0.00% Reduced -2.4k -2,383
39 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 15,05315.1k $264.3k $264.3k 0.00% Added +331 +331
40 Trexquant Investment LP 0.00% of their portfolio STAMFORD, CT 14,32614.3k $251.6k $251.6k 0.00% Reduced -5.6k -5,599
41 WINTON GROUP Ltd 0.01% of their portfolio LONDON, X0 13,32313.3k $234.0k $234.0k 0.01% Reduced -21 -21
42 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 12,85912.9k $225.8k $225.8k 0.00% Added +1.1k +1,079
43 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 12,25612.3k $215.2k $215.2k 0.00% Added +240 +240
44 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 12,17212.2k $188.3k $188.3k 0.00% Unchanged
45 Savant Capital, LLC 0.00% of their portfolio ROCKFORD, IL 11,02011.0k $193.5k $193.5k 0.00% Reduced -31 -31
46 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 10,79710.8k $189.6k $189.6k 0.00% New
47 ALGERT GLOBAL LLC 0.00% of their portfolio SAN FRANCISCO, CA 10,45410.5k $183.6k $183.6k 0.00% New
48 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 9,1399.1k $160.5k $160.5k 0.00% Added +4.3k +4,314
49 FMR LLC 0.00% of their portfolio BOSTON, MA 8,6298.6k $151.5k $151.5k 0.00% Added +39 +39
50 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 7,0407.0k $123.6k $123.6k 0.00% Added +232 +232
51 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 6,7916.8k $119.2k $119.2k 0.00% Reduced -422 -422
52 UBS Group AG 0.00% of their portfolio ZURICH, V8 5,2065.2k $91.4k $91.4k 0.00% Reduced -5.0k -5,006
53 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 3,9243.9k $68.9k $68.9k 0.00% Reduced -367 -367
54 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 3,5303.5k $62.0k $62.0k 0.00% Reduced -106 -106
55 GAMMA Investing LLC 0.00% of their portfolio FOSTER CITY, CA 2,5572.6k $44.9k $44.9k 0.00% Reduced -43 -43
56 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 2,5392.5k $44.6k $44.6k 0.00% Added +644 +644
57 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 2,2182.2k $38.9k $38.9k 0.00% Unchanged
58 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 1,8431.8k $32.4k $32.4k 0.00% Unchanged
59 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 1,6191.6k $28.0k $28.0k 0.00% New
60 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 1,5961.6k $28.0k $28.0k 0.00% Reduced -347 -347
61 Blue Trust, Inc. 0.00% of their portfolio BRENTWOOD, TN 1,4241.4k $25.0k $25.0k 0.00% Reduced -328 -328
62 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 1,1051.1k $19.4k $19.4k 0.00% Added +1.0k +1,041
63 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,0171.0k $17.9k $17.9k 0.00% Reduced -1.3k -1,297
64 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 859859 $15.1k $15.1k 0.00% Unchanged
65 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 831831 $15.0k $15.0k 0.00% Reduced -16 -16
66 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 776776 $13.6k $13.6k 0.00% Reduced -59 -59
67 Legal & General Group Plc 0.00% of their portfolio London, X0 740740 $13.0k $13.0k 0.00% Unchanged
68 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 412412 $7.2k $7.2k 0.00% Reduced -265 -265
69 Private Wealth Management Group, LLC 0.00% of their portfolio PRINCETON, NJ 231231 $4.1k $4.1k 0.00% Unchanged
70 JPL Wealth Management, LLC 0.00% of their portfolio GREENWOOD VILLAGE, CO 205205 $3.6k $3.6k 0.00% Added +201 +201
71 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 204204 $3.6k $3.6k 0.00% New
72 MassMutual Private Wealth & Trust, FSB 0.00% of their portfolio Windsor, CT 185185 $3.2k $3.2k 0.00% Unchanged
73 Torren Management, LLC 0.00% of their portfolio SAN DIEGO, CA 176176 $3.1k $3.1k 0.00% Unchanged
74 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 153153 $2.7k $2.7k 0.00% Reduced -122 -122
75 Smartleaf Asset Management LLC 0.00% of their portfolio BOSTON, MA 141141 $2.5k $2.5k 0.00% Unchanged
76 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 132132 $2.3k $2.3k 0.00% Added +66 +66
77 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 117117 $2.1k $2.1k 0.00% Reduced -358 -358
78 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 100100 $1.8k $1.8k 0.00% Unchanged
79 Buck Wealth Strategies, LLC 0.00% of their portfolio DENVER, CO 100100 $1.8k $1.8k 0.00% New
80 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 9999 $1.7k $1.7k 0.00% Reduced -124 -124
81 ARMSTRONG ADVISORY GROUP, INC 0.00% of their portfolio NEEDHAM, MA 9090 $1.6k $1.6k 0.00% Unchanged
82 Boreal Capital Management LLC 0.00% of their portfolio MIAMI, FL 7070 $1.2k $1.2k 0.00% New
83 Versant Capital Management, Inc 0.00% of their portfolio PHOENIX, AZ 6464 $1.1k $1.1k 0.00% Unchanged
84 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 5555 $966 $966 0.00% Added +1 +1
85 RAFFA WEALTH MANAGEMENT, LLC 0.00% of their portfolio WASHINGTON, DC 4848 $843 $843 0.00% New
86 HUNTINGTON NATIONAL BANK 0.00% of their portfolio COLUMBUS, OH 4646 $811 $811 0.00% Unchanged
87 Essential Partners LLC 0.00% of their portfolio RANCHO SANTA FE, CA 4646 $808 $808 0.00% Reduced -291 -291
88 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 3838 $667 $667 0.00% Unchanged
89 Cornerstone Planning Group LLC 0.00% of their portfolio FAIRFIELD, NJ 3737 $697 $697 0.00% Unchanged
90 Basecamp Wealth Advisors LLC 0.00% of their portfolio BELLEVUE, WA 2828 $492 $492 0.00% Added +6 +6
91 SJS Investment Consulting Inc. 0.00% of their portfolio SYLVANIA, OH 2222 $388 $388 0.00% Added +2 +2
92 ASSETMARK, INC 0.00% of their portfolio CONCORD, CA 2121 $369 $369 0.00% Unchanged
93 MATHER GROUP, LLC. 0.00% of their portfolio CHICAGO, IL 2121 $369 $369 0.00% Unchanged
94 Physician Wealth Advisors, Inc. 0.00% of their portfolio MIDVALE, UT 2121 $369 $369 0.00% Unchanged
95 ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio CHICAGO, IL 1616 $281 $281 0.00% New
96 Covestor Ltd 0.00% of their portfolio LONDON, X0 1515 $0 $0 0.00% Unchanged
97 Quarry LP 0.00% of their portfolio NEW YORK, NY 1111 $193 $193 0.00% New
98 FIFTH THIRD BANCORP 0.00% of their portfolio CINCINNATI, OH 99 $158 $158 0.00% Reduced -3 -3
99 Clearstead Advisors, LLC 0.00% of their portfolio CLEVELAND, OH 11 $18 $18 0.00% New