Vault-13

STAR BULK CARRIERS CORP. SBLK

SHS PAR · Common Stock · CUSIP Y8162K204 · ISIN MHY8162K2046

160 institutional holders -4 vs Q3 2022
47,273,42447.3m shares reported held*
46.0% of all shares outstanding*
$909.5mreported value*
22 new 55 added 53 reduced 29 sold out net sold ≈ $7.8m (-405.1k 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 ($201.4k this quarter). Holder counts are more reliable. Shares outstanding: 102.9m as of 2022-12-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $19.24. Options: 14 managers hold calls ($128.0m notional), 14 hold puts ($110.7m).

Trends to Q4 2022

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 164Q4 22: 160160Q3 22Q4 22
Numbers
QuarterHolders
Q3 2022164
Q4 2022160

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$50m$100m$150mQ3 22 calls: $117.8mQ3 22 puts: $114.7mQ3 22P/C 0.97Q4 22 calls: $128.0mQ4 22 puts: $110.7mQ4 22P/C 0.87
Numbers
QuarterCallsPutsP/C
Q3 2022$117.8m$114.7m0.97
Q4 2022$128.0m$110.7m0.87

Biggest buyers

Balyasny Asset Management L.P. New +1,032,029+1.0m
ExodusPoint Capital Management, LP New +360,000+360.0k
RENAISSANCE TECHNOLOGIES LLC Added +302,000+302.0k
MILLENNIUM MANAGEMENT LLC Added +140,585+140.6k
FIRST TRUST ADVISORS LP New +136,740+136.7k
Manatuck Hill Partners, LLC New +120,000+120.0k
Amitell Capital Pte Ltd New +102,886+102.9k
Weiss Multi-Strategy Advisers LLC Added +77,644+77.6k
BlackRock Inc. Added +76,151+76.2k
VR Advisory Services Ltd Added +50,000+50.0k

Biggest sellers

VOLORIDGE INVESTMENT MANAGEMENT, LLC Reduced -436,537-436.5k
ACADIAN ASSET MANAGEMENT LLC Sold out -383,776-383.8k
TWO SIGMA ADVISERS, LP Reduced -220,620-220.6k
Caption Management, LLC Sold out -207,769-207.8k
CHURCHILL MANAGEMENT Corp Reduced -192,207-192.2k
STIFEL FINANCIAL CORP Reduced -145,194-145.2k
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Sold out -112,385-112.4k
Qube Research & Technologies Ltd Sold out -101,235-101.2k
PDT Partners, LLC Sold out -89,629-89.6k
Schonfeld Strategic Advisors LLC Sold out -81,900-81.9k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $53.1m2.8m shares
CITADEL ADVISORS LLC Added $22.8m1.2m shares
GROUP ONE TRADING LLC Reduced $20.5m1.1m shares
JANE STREET GROUP, LLC Reduced $14.2m740.2k shares
SIMPLEX TRADING, LLC Reduced $9.1m472.6k shares
Walleye Trading LLC Added $2.8m144.5k shares
PEAK6 Investments LLC Added $2.7m141.2k shares
WOLVERINE TRADING, LLC Reduced $2.6m133.9k shares
Walleye Capital LLC New $90.4k4.7k shares
SUMMIT SECURITIES GROUP LLC New $58.0k3.0k shares

Biggest puts

GROUP ONE TRADING LLC Added $39.5m2.1m shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $18.4m955.8k shares
JANE STREET GROUP, LLC Reduced $17.7m921.5k shares
CITADEL ADVISORS LLC Reduced $17.0m885.2k shares
SIMPLEX TRADING, LLC Added $13.5m704.6k shares
Walleye Trading LLC Reduced $1.4m71.2k shares
PEAK6 Investments LLC Reduced $1.3m65.5k shares
WOLVERINE TRADING, LLC Added $1.2m61.8k shares
Walleye Capital LLC Added $334.6k17.4k shares
CAPITAL FUND MANAGEMENT S.A. New $225.0k11.7k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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
Famatown Finance Ltd 13D · may seek influence +0.4 pts · filed 2025-10-06
Stated purposeOn October 3, 2025, Mr. Mikkel Storm Weum, an investment director of Seatankers Management AS ("Seatankers"), an entity that is related to the Reporting Persons, was appointed as a director of the Issuer (the "Director"). A copy of the Issuer's press release is attached as Exhibit B. The Common Shares that the Reporting Persons may be deemed to beneficially own are held for investment or other purposes, but as the Director is both a director of the Issuer and an investment director of Seatankers, the Reporting Persons may be deemed to have control over the management and policies of the Issuer. In the future, the Reporting Persons may be involved in and may plan for his involvement in any or all of the following: (a) The acquisition of additional Common Shares of the Issuer, or the disp… Full filing
11.8% +0.4 pts 13.6m≈ $338.9m 2025-10-06
Danaos Corp 13G · passive investor new · filed 2025-05-09 5.2% new 6.1m≈ $153.1m 2025-05-09

Insider purchases and sales in Q4 2022

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.

None reported in Q4 2022.

Holders, Q4 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 OAKTREE CAPITAL MANAGEMENT LP 5.44% of their portfolio LOS ANGELES, CA 26,067,48326.1m $501.3m $501.3m 5.44% Added +46.0k +46,026
2 ALLIANCEBERNSTEIN L.P. 0.06% of their portfolio NASHVILLE, TN 6,476,1506.5m $124.5m $124.5m 0.06% Reduced -71.4k -71,392
3 RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio NEW YORK, NY 1,226,9001.2m $23.6m $23.6m 0.03% Added +302.0k +302,000
4 Balyasny Asset Management L.P. 0.07% of their portfolio Chicago, IL 1,032,0291.0m $19.8m $19.8m 0.07% New
5 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 943,511943.5k $18.1m $18.1m 0.00% Reduced -46.8k -46,825
6 WELLS FARGO & COMPANY/MN 0.01% of their portfolio SAN FRANCISCO, CA 884,415884.4k $17.0m $17.0m 0.01% Reduced -64.7k -64,660
7 BlackRock Inc. 0.00% of their portfolio New York, NY 780,778780.8k $15.0m $15.0m 0.00% Added +76.2k +76,151
8 Gratus Capital, LLC 1.10% of their portfolio ATLANTA, GA 690,834690.8k $13.3m $13.3m 1.10% Added +36.0k +36,024
9 Encompass Capital Advisors LLC 0.53% of their portfolio New York, NY 500,000500.0k $9.6m $9.6m 0.53% Unchanged
10 Gilman Hill Asset Management, LLC 1.63% of their portfolio NEW CANAAN, CT 413,565413.6k $8.0m $8.0m 1.63% Reduced -1.4k -1,360
11 THOMAS WHITE INTERNATIONAL LTD 1.70% of their portfolio CHICAGO, IL 401,726401.7k $7.7m $7.7m 1.70% Reduced -77.9k -77,858
12 MARSHALL WACE, LLP 0.02% of their portfolio LONDON, X0 390,933390.9k $7.5m $7.5m 0.02% Reduced -59.6k -59,556
13 Man Group plc 0.03% of their portfolio LONDON, X0 390,202390.2k $7.5m $7.5m 0.03% Added +25.8k +25,836
14 STIFEL FINANCIAL CORP 0.01% of their portfolio ST. LOUIS, MO 365,499365.5k $7.0m $7.0m 0.01% Reduced -145.2k -145,194
15 ExodusPoint Capital Management, LP 0.11% of their portfolio NEW YORK, NY 360,000360.0k $6.9m $6.9m 0.11% New
16 VALUEWORKS LLC 2.40% of their portfolio NEW YORK, NY 353,592353.6k $6.8m $6.8m 2.40% Added +1.8k +1,750
17 VR Advisory Services Ltd 2.50% of their portfolio CAMANA BAY, GRAND CAYMAN, E9 350,000350.0k $6.7m $6.7m 2.50% Added +50.0k +50,000
18 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 323,615323.6k $6.2m $6.2m 0.01% Added +140.6k +140,585
19 Quantedge Capital Pte Ltd 1.98% of their portfolio Singapore, U0 307,100307.1k $5.9m $5.9m 1.98% Added +13.3k +13,300
20 Amundi 0.00% of their portfolio Paris, I0 287,071287.1k $5.9m $5.9m 0.00% Reduced -7.6k -7,559
21 NORGES BANK 0.00% of their portfolio OSLO, Q8 236,138236.1k $4.5m $4.5m 0.00% Unchanged
22 Mirae Asset Global Investments Co., Ltd. 0.01% of their portfolio SEOUL, M5 226,330226.3k $4.4m $4.4m 0.01% Added +2.6k +2,647
23 CHURCHILL MANAGEMENT Corp 0.09% of their portfolio Los Angeles, CA 190,006190.0k $3.7m $3.7m 0.09% Reduced -192.2k -192,207
24 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 163,214163.2k $3.1m $3.1m 0.00% Reduced -10.3k -10,327
25 Prospera Financial Services Inc 0.15% of their portfolio Dallas, TX 152,561152.6k $2.9m $2.9m 0.15% Reduced -1.7k -1,656
26 Skandinaviska Enskilda Banken AB (publ) 0.02% of their portfolio STOCKHOLM, V7 142,899142.9k $2.7m $2.7m 0.02% Unchanged
27 Janney Montgomery Scott LLC 0.01% of their portfolio PHILADELPHIA, PA 141,900141.9k $2.7m $2.7m 0.01% Added +18.2k +18,156
28 Weiss Multi-Strategy Advisers LLC 0.08% of their portfolio NEW YORK, NY 141,388141.4k $2.7m $2.7m 0.08% Added +77.6k +77,644
29 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 136,740136.7k $2.6m $2.6m 0.00% New
30 Manatuck Hill Partners, LLC 1.09% of their portfolio WESTPORT, CT 120,000120.0k $2.3m $2.3m 1.09% New
31 HARVEY CAPITAL MANAGEMENT INC 0.90% of their portfolio PALM BEACH, FL 112,209112.2k $2.2m $2.2m 0.90% Reduced -30.0k -30,010
32 Amitell Capital Pte Ltd 1.99% of their portfolio SINGAPORE, U0 102,886102.9k $2.0m $2.0m 1.99% New
33 Cubist Systematic Strategies, LLC 0.02% of their portfolio STAMFORD, CT 101,402101.4k $1.9m $1.9m 0.02% Reduced -12.7k -12,686
34 Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio FAIRFIELD, IA 99,68399.7k $1.9m $1.9m 0.01% Added +1.0k +1,017
35 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 96,94596.9k $1.9m $1.9m 0.00% Added +353 +353
36 CAPITAL FUND MANAGEMENT S.A. 0.04% of their portfolio PARIS, I0 94,26694.3k $1.8m $1.8m 0.04% Added +742 +742
37 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 91,90791.9k $1.8m $1.8m 0.00% Added +21.8k +21,758
38 RBF Capital, LLC 0.13% of their portfolio RENO, NV 88,90088.9k $1.7m $1.7m 0.13% Unchanged
39 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 79,19979.2k $1.5m $1.5m 0.00% Added +10.1k +10,059
40 Artemis Investment Management LLP 0.02% of their portfolio EDINBURGH, X0 76,99677.0k $1.5m $1.5m 0.02% Reduced -30.4k -30,400
41 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 73,44873.4k $1.4m $1.4m 0.00% Added +12.3k +12,298
42 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 72,21072.2k $1.4m $1.4m 0.00% Added +5.9k +5,859
43 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio JUPITER, FL 71,46871.5k $1.4m $1.4m 0.01% Reduced -436.5k -436,537
44 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 70,18070.2k $1.3m $1.3m 0.00% Added +7.3k +7,294
45 Williams Jones Wealth Management, LLC. 0.02% of their portfolio NEW YORK, NY 57,15057.1k $1.1m $1.1m 0.02% Reduced -6.7k -6,744
46 Greenland Capital Management LP 0.19% of their portfolio NEW YORK, NY 55,30455.3k $1.1m $1.1m 0.19% First filing
47 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 52,47852.5k $1.0m $1.0m 0.00% Reduced -1.4k -1,368
48 Federation des caisses Desjardins du Quebec 0.01% of their portfolio LEVIS, A8 50,78050.8k $976.5k $976.5k 0.01% Unchanged
49 Paradiem, LLC 0.36% of their portfolio COVINGTON, LA 50,23150.2k $965.9k $965.9k 0.36% Added +6.9k +6,878
50 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 48,83048.8k $939.0k $939.0k 0.00% Added +523 +523
51 HORIZON KINETICS ASSET MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 46,73946.7k $898.8k $898.8k 0.01% Reduced -2.2k -2,245
52 RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio ST PETERSBURG, FL 46,23446.2k $889.1k $889.1k 0.00% Added +9.0k +9,025
53 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 44,88244.9k $863.0k $863.0k 0.00% Reduced -31.1k -31,136
54 Boston Partners 0.00% of their portfolio BOSTON, MA 44,27144.3k $851.3k $851.3k 0.00% Added +33.4k +33,430
55 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio Stamford, CT 43,86243.9k $843.5k $843.5k 0.01% Added +6.2k +6,223
56 PEAK6 Investments LLC 0.05% of their portfolio CHICAGO, IL 43,78243.8k $841.9k $841.9k 0.05% Reduced -14.3k -14,314
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 42,92342.9k $825.4k $825.4k 0.00% Reduced -11.1k -11,143
58 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 42,88042.9k $824.6k $824.6k 0.00% Added +16.6k +16,600
59 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 42,75642.8k $822.2k $822.2k 0.01% Reduced -73.8k -73,831
60 Virtu Financial LLC 0.11% of their portfolio New York, NY 41,69641.7k $802.0k $802.0k 0.11% Added +26.5k +26,485
61 Handelsbanken Fonder AB 0.00% of their portfolio STOCKHOLM, V7 40,30040.3k $775.0k $775.0k 0.00% Unchanged
62 B. Riley Wealth Advisors, Inc. 0.02% of their portfolio MEMPHIS, TN 39,88339.9k $767.0k $767.0k 0.02% Reduced -401 -401
63 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 39,00139.0k $750.0k $750.0k 0.00% Added +189 +189
64 UBS Group AG 0.00% of their portfolio ZURICH, V8 37,48637.5k $720.9k $720.9k 0.00% Added +5.4k +5,385
65 Golden Green, Inc. 0.74% of their portfolio Seneca, SC 37,40737.4k $719.3k $719.3k 0.74% Reduced -1.8k -1,843
66 Legal & General Group Plc 0.00% of their portfolio London, X0 35,69535.7k $686.4k $686.4k 0.00% Unchanged
67 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 34,72034.7k $667.7k $667.7k 0.00% Reduced -220.6k -220,620
68 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 33,80933.8k $650.1k $650.1k 0.00% Added +1.5k +1,473
69 Sigma Planning Corp 0.02% of their portfolio ANN ARBOR, MI 33,42833.4k $642.8k $642.8k 0.02% Added +4.8k +4,776
70 STEPHENS INC /AR/ 0.01% of their portfolio LITTLE ROCK, AR 33,26233.3k $639.6k $639.6k 0.01% Added +4.3k +4,262
71 Atria Wealth Solutions, Inc. 0.01% of their portfolio NEW YORK, NY 31,76331.8k $612.5k $612.5k 0.01% New
72 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 31,42731.4k $604.3k $604.3k 0.01% Reduced -68.2k -68,187
73 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 30,67530.7k $589.9k $589.9k 0.00% First filing
74 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 28,31528.3k $544.0k $544.0k 0.00% Added +9.5k +9,535
75 Steward Partners Investment Advisory, LLC 0.01% of their portfolio STAMFORD, CT 26,89026.9k $517.1k $517.1k 0.01% Added +1.7k +1,699
76 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 24,80524.8k $477.0k $477.0k 0.00% Reduced -65.2k -65,225
77 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 22,40022.4k $430.8k $430.8k 0.00% Unchanged
78 Essex Financial Services, Inc. 0.04% of their portfolio ESSEX, CT 21,82521.8k $419.0k $419.0k 0.04% Added +2.0k +2,020
79 FIRETHORN WEALTH PARTNERS, LLC 0.33% of their portfolio AUGUSTA, GA 20,30220.3k $390.4k $390.4k 0.33% Reduced -7.9k -7,855
80 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 20,03620.0k $385.3k $385.3k 0.00% Reduced -7.0k -6,964
81 Purus Wealth Management, LLC 0.33% of their portfolio Newport Beach, CA 19,06419.1k $366.6k $366.6k 0.33% Reduced -759 -759
82 Tidal Investments LLC 0.01% of their portfolio Milwaukee, WI 18,25218.3k $351.0k $351.0k 0.01% Reduced -15.4k -15,391
83 SEVEN EIGHT CAPITAL, LP 0.09% of their portfolio New York, NY 18,02218.0k $346.6k $346.6k 0.09% Reduced -61.6k -61,611
84 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 18,00018.0k $346.1k $346.1k 0.00% Unchanged
85 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 17,61517.6k $338.7k $338.7k 0.00% New
86 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 16,58716.6k $318.0k $318.0k 0.00% Added +1.9k +1,937
87 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 16,36116.4k $314.6k $314.6k 0.00% New
88 Astoria Portfolio Advisors LLC. 0.17% of their portfolio NEW YORK, NY 16,26216.3k $365.1k $365.1k 0.17% New
89 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 16,01916.0k $308.0k $308.0k 0.00% Reduced -8.1k -8,135
90 Global Retirement Partners, LLC 0.02% of their portfolio San Rafael, CA 15,77515.8k $303.4k $303.4k 0.02% Added +14.8k +14,775
91 SeaCrest Wealth Management, LLC 0.04% of their portfolio PURCHASE, NY 15,65315.7k $301.0k $301.0k 0.04% Reduced -394 -394
92 MITCHELL MCLEOD PUGH & WILLIAMS INC 0.10% of their portfolio MOBILE, AL 15,33015.3k $294.8k $294.8k 0.10% Unchanged
93 Principle Wealth Partners LLC 0.03% of their portfolio MADISON, CT 15,09715.1k $290.3k $290.3k 0.03% Added +1.2k +1,205
94 Sippican Capital Advisors 0.27% of their portfolio BOSTON, MA 14,69514.7k $283.0k $283.0k 0.27% Reduced -450 -450
95 Apollon Wealth Management, LLC 0.02% of their portfolio MOUNT PLEASANT, SC 14,10214.1k $271.2k $271.2k 0.02% Added +2.9k +2,946
96 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 14,02614.0k $270.0k $270.0k 0.00% New
97 SUMMIT SECURITIES GROUP LLC 0.05% of their portfolio NEW YORK, NY 13,20013.2k $254.0k $254.0k 0.05% Reduced -5.1k -5,100
98 XTX Topco Ltd 0.05% of their portfolio LONDON, X0 12,98613.0k $249.7k $249.7k 0.05% Added +3.0k +2,985
99 Banque Cantonale Vaudoise 0.01% of their portfolio LAUSANNE, V8 12,47012.5k $240.0k $240.0k 0.01% Reduced -2.4k -2,370
100 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 12,23012.2k $235.0k $235.0k 0.00% Reduced -37.7k -37,670