STAR BULK CARRIERS CORP. SBLK
SHS PAR · Common Stock · CUSIP Y8162K204 · ISIN MHY8162K2046
- SectorIndustrials
- IndustryDeep Sea Foreign Transportation of Freight
- FilingsSEC EDGAR
* 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
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 164 |
| Q4 2022 | 160 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $117.8m | $114.7m | 0.97 |
| Q4 2022 | $128.0m | $110.7m | 0.87 |
Biggest buyers
| Balyasny Asset Management L.P. | New | +1.0m |
| ExodusPoint Capital Management, LP | New | +360.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +302.0k |
| MILLENNIUM MANAGEMENT LLC | Added | +140.6k |
| FIRST TRUST ADVISORS LP | New | +136.7k |
| Manatuck Hill Partners, LLC | New | +120.0k |
| Amitell Capital Pte Ltd | New | +102.9k |
| Weiss Multi-Strategy Advisers LLC | Added | +77.6k |
| BlackRock Inc. | Added | +76.2k |
| VR Advisory Services Ltd | Added | +50.0k |
Biggest sellers
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -436.5k |
| ACADIAN ASSET MANAGEMENT LLC | Sold out | -383.8k |
| TWO SIGMA ADVISERS, LP | Reduced | -220.6k |
| Caption Management, LLC | Sold out | -207.8k |
| CHURCHILL MANAGEMENT Corp | Reduced | -192.2k |
| STIFEL FINANCIAL CORP | Reduced | -145.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Sold out | -112.4k |
| Qube Research & Technologies Ltd | Sold out | -101.2k |
| PDT Partners, LLC | Sold out | -89.6k |
| Schonfeld Strategic Advisors LLC | Sold out | -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.
| Holder | Stake |
|---|---|
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% |
| Danaos Corp 13G · passive investor new · filed 2025-05-09 | 5.2% |
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
| Manager | Shares | Change |
|---|---|---|
| OAKTREE CAPITAL MANAGEMENT LP 5.44% of their portfolio | 26.1m $501.3m | Added +46.0k |
| ALLIANCEBERNSTEIN L.P. 0.06% of their portfolio | 6.5m $124.5m | Reduced -71.4k |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 1.2m $23.6m | Added +302.0k |
| Balyasny Asset Management L.P. 0.07% of their portfolio | 1.0m $19.8m | New |
| MORGAN STANLEY 0.00% of their portfolio | 943.5k $18.1m | Reduced -46.8k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 884.4k $17.0m | Reduced -64.7k |
| BlackRock Inc. 0.00% of their portfolio | 780.8k $15.0m | Added +76.2k |
| Gratus Capital, LLC 1.10% of their portfolio | 690.8k $13.3m | Added +36.0k |
| Encompass Capital Advisors LLC 0.53% of their portfolio | 500.0k $9.6m | Unchanged |
| Gilman Hill Asset Management, LLC 1.63% of their portfolio | 413.6k $8.0m | Reduced -1.4k |
| THOMAS WHITE INTERNATIONAL LTD 1.70% of their portfolio | 401.7k $7.7m | Reduced -77.9k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 390.9k $7.5m | Reduced -59.6k |
| Man Group plc 0.03% of their portfolio | 390.2k $7.5m | Added +25.8k |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 365.5k $7.0m | Reduced -145.2k |
| ExodusPoint Capital Management, LP 0.11% of their portfolio | 360.0k $6.9m | New |
| VALUEWORKS LLC 2.40% of their portfolio | 353.6k $6.8m | Added +1.8k |
| VR Advisory Services Ltd 2.50% of their portfolio | 350.0k $6.7m | Added +50.0k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 323.6k $6.2m | Added +140.6k |
| Quantedge Capital Pte Ltd 1.98% of their portfolio | 307.1k $5.9m | Added +13.3k |
| Amundi 0.00% of their portfolio | 287.1k $5.9m | Reduced -7.6k |
| NORGES BANK 0.00% of their portfolio | 236.1k $4.5m | Unchanged |
| Mirae Asset Global Investments Co., Ltd. 0.01% of their portfolio | 226.3k $4.4m | Added +2.6k |
| CHURCHILL MANAGEMENT Corp 0.09% of their portfolio | 190.0k $3.7m | Reduced -192.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 163.2k $3.1m | Reduced -10.3k |
| Prospera Financial Services Inc 0.15% of their portfolio | 152.6k $2.9m | Reduced -1.7k |
| Skandinaviska Enskilda Banken AB (publ) 0.02% of their portfolio | 142.9k $2.7m | Unchanged |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 141.9k $2.7m | Added +18.2k |
| Weiss Multi-Strategy Advisers LLC 0.08% of their portfolio | 141.4k $2.7m | Added +77.6k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 136.7k $2.6m | New |
| Manatuck Hill Partners, LLC 1.09% of their portfolio | 120.0k $2.3m | New |
| HARVEY CAPITAL MANAGEMENT INC 0.90% of their portfolio | 112.2k $2.2m | Reduced -30.0k |
| Amitell Capital Pte Ltd 1.99% of their portfolio | 102.9k $2.0m | New |
| Cubist Systematic Strategies, LLC 0.02% of their portfolio | 101.4k $1.9m | Reduced -12.7k |
| Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio | 99.7k $1.9m | Added +1.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 96.9k $1.9m | Added +353 |
| CAPITAL FUND MANAGEMENT S.A. 0.04% of their portfolio | 94.3k $1.8m | Added +742 |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 91.9k $1.8m | Added +21.8k |
| RBF Capital, LLC 0.13% of their portfolio | 88.9k $1.7m | Unchanged |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 79.2k $1.5m | Added +10.1k |
| Artemis Investment Management LLP 0.02% of their portfolio | 77.0k $1.5m | Reduced -30.4k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 73.4k $1.4m | Added +12.3k |
| LPL Financial LLC 0.00% of their portfolio | 72.2k $1.4m | Added +5.9k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 71.5k $1.4m | Reduced -436.5k |
| STATE STREET CORP 0.00% of their portfolio | 70.2k $1.3m | Added +7.3k |
| Williams Jones Wealth Management, LLC. 0.02% of their portfolio | 57.1k $1.1m | Reduced -6.7k |
| Greenland Capital Management LP 0.19% of their portfolio | 55.3k $1.1m | First filing |
| NORTHERN TRUST CORP 0.00% of their portfolio | 52.5k $1.0m | Reduced -1.4k |
| Federation des caisses Desjardins du Quebec 0.01% of their portfolio | 50.8k $976.5k | Unchanged |
| Paradiem, LLC 0.36% of their portfolio | 50.2k $965.9k | Added +6.9k |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 48.8k $939.0k | Added +523 |
| HORIZON KINETICS ASSET MANAGEMENT LLC 0.01% of their portfolio | 46.7k $898.8k | Reduced -2.2k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 46.2k $889.1k | Added +9.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 44.9k $863.0k | Reduced -31.1k |
| Boston Partners 0.00% of their portfolio | 44.3k $851.3k | Added +33.4k |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio | 43.9k $843.5k | Added +6.2k |
| PEAK6 Investments LLC 0.05% of their portfolio | 43.8k $841.9k | Reduced -14.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 42.9k $825.4k | Reduced -11.1k |
| VANGUARD GROUP INC 0.00% of their portfolio | 42.9k $824.6k | Added +16.6k |
| Squarepoint Ops LLC 0.01% of their portfolio | 42.8k $822.2k | Reduced -73.8k |
| Virtu Financial LLC 0.11% of their portfolio | 41.7k $802.0k | Added +26.5k |
| Handelsbanken Fonder AB 0.00% of their portfolio | 40.3k $775.0k | Unchanged |
| B. Riley Wealth Advisors, Inc. 0.02% of their portfolio | 39.9k $767.0k | Reduced -401 |
| Invesco Ltd. 0.00% of their portfolio | 39.0k $750.0k | Added +189 |
| UBS Group AG 0.00% of their portfolio | 37.5k $720.9k | Added +5.4k |
| Golden Green, Inc. 0.74% of their portfolio | 37.4k $719.3k | Reduced -1.8k |
| Legal & General Group Plc 0.00% of their portfolio | 35.7k $686.4k | Unchanged |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 34.7k $667.7k | Reduced -220.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 33.8k $650.1k | Added +1.5k |
| Sigma Planning Corp 0.02% of their portfolio | 33.4k $642.8k | Added +4.8k |
| STEPHENS INC /AR/ 0.01% of their portfolio | 33.3k $639.6k | Added +4.3k |
| Atria Wealth Solutions, Inc. 0.01% of their portfolio | 31.8k $612.5k | New |
| Walleye Capital LLC 0.01% of their portfolio | 31.4k $604.3k | Reduced -68.2k |
| BARCLAYS PLC 0.00% of their portfolio | 30.7k $589.9k | First filing |
| HighTower Advisors, LLC 0.00% of their portfolio | 28.3k $544.0k | Added +9.5k |
| Steward Partners Investment Advisory, LLC 0.01% of their portfolio | 26.9k $517.1k | Added +1.7k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 24.8k $477.0k | Reduced -65.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 22.4k $430.8k | Unchanged |
| Essex Financial Services, Inc. 0.04% of their portfolio | 21.8k $419.0k | Added +2.0k |
| FIRETHORN WEALTH PARTNERS, LLC 0.33% of their portfolio | 20.3k $390.4k | Reduced -7.9k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 20.0k $385.3k | Reduced -7.0k |
| Purus Wealth Management, LLC 0.33% of their portfolio | 19.1k $366.6k | Reduced -759 |
| Tidal Investments LLC 0.01% of their portfolio | 18.3k $351.0k | Reduced -15.4k |
| SEVEN EIGHT CAPITAL, LP 0.09% of their portfolio | 18.0k $346.6k | Reduced -61.6k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 18.0k $346.1k | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 17.6k $338.7k | New |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 16.6k $318.0k | Added +1.9k |
| Creative Planning 0.00% of their portfolio | 16.4k $314.6k | New |
| Astoria Portfolio Advisors LLC. 0.17% of their portfolio | 16.3k $365.1k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 16.0k $308.0k | Reduced -8.1k |
| Global Retirement Partners, LLC 0.02% of their portfolio | 15.8k $303.4k | Added +14.8k |
| SeaCrest Wealth Management, LLC 0.04% of their portfolio | 15.7k $301.0k | Reduced -394 |
| MITCHELL MCLEOD PUGH & WILLIAMS INC 0.10% of their portfolio | 15.3k $294.8k | Unchanged |
| Principle Wealth Partners LLC 0.03% of their portfolio | 15.1k $290.3k | Added +1.2k |
| Sippican Capital Advisors 0.27% of their portfolio | 14.7k $283.0k | Reduced -450 |
| Apollon Wealth Management, LLC 0.02% of their portfolio | 14.1k $271.2k | Added +2.9k |
| SG Americas Securities, LLC 0.00% of their portfolio | 14.0k $270.0k | New |
| SUMMIT SECURITIES GROUP LLC 0.05% of their portfolio | 13.2k $254.0k | Reduced -5.1k |
| XTX Topco Ltd 0.05% of their portfolio | 13.0k $249.7k | Added +3.0k |
| Banque Cantonale Vaudoise 0.01% of their portfolio | 12.5k $240.0k | Reduced -2.4k |
| MML INVESTORS SERVICES, LLC 0.00% of their portfolio | 12.2k $235.0k | Reduced -37.7k |