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 ($927.9k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $24.39. Options: 9 managers hold calls ($29.8m notional), 8 hold puts ($17.1m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 164 |
| Q4 2022 | 160 |
| Q1 2023 | 173 |
| Q2 2023 | 160 |
| Q3 2023 | 152 |
| Q4 2023 | 178 |
| Q1 2024 | 205 |
| Q2 2024 | 244 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 77 | 82 |
| Q1 2023 | 94 | 74 |
| Q2 2023 | 68 | 89 |
| Q3 2023 | 72 | 74 |
| Q4 2023 | 91 | 63 |
| Q1 2024 | 117 | 78 |
| Q2 2024 | 170 | 78 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $34.5m | $56.4m | 1.63 |
| Q4 2023 | $25.4m | $43.1m | 1.70 |
| Q1 2024 | $23.0m | $54.9m | 2.38 |
| Q2 2024 | $29.8m | $17.1m | 0.57 |
Biggest buyers
| TWO SIGMA ADVISERS, LP | Added | +1.9m |
| OAKTREE CAPITAL MANAGEMENT LP | Added | +1.9m |
| LAZARD ASSET MANAGEMENT LLC | New | +1.5m |
| TWO SIGMA INVESTMENTS, LP | Added | +1.5m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +1.4m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | New | +1.1m |
| GOLDMAN SACHS GROUP INC | Added | +960.2k |
| Bank of New York Mellon Corp | New | +952.1k |
| MARSHALL WACE, LLP | Added | +903.5k |
| MILLENNIUM MANAGEMENT LLC | Added | +850.8k |
Biggest sellers
| ALLIANCEBERNSTEIN L.P. | Reduced | -5.2m |
| Ion Asset Management Ltd. | Reduced | -1.1m |
| MORGAN STANLEY | Reduced | -926.6k |
| Mirae Asset Global Investments Co., Ltd. | Sold out | -327.4k |
| TUDOR INVESTMENT CORP ET AL | Reduced | -277.0k |
| Scion Asset Management, LLC | Sold out | -250.0k |
| Grand Alliance Asset Management Ltd | Reduced | -160.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -154.8k |
| FIFTH LANE CAPITAL, LP | Sold out | -77.8k |
| PREVAIL INNOVATIVE WEALTH ADVISORS, LLC | Sold out | -77.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $13.6m557.9k shares |
| SIMPLEX TRADING, LLC | Added | $4.3m177.3k shares |
| GROUP ONE TRADING LLC | Added | $2.7m112.4k shares |
| CITADEL ADVISORS LLC | Added | $2.7m108.9k shares |
| Walleye Trading LLC | Added | $2.2m88.9k shares |
| PEAK6 Investments LLC | Added | $1.8m75.7k shares |
| JANE STREET GROUP, LLC | Reduced | $1.8m72.4k shares |
| WOLVERINE TRADING, LLC | Added | $729.0k29.9k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $10.9m445.1k shares |
| CITADEL ADVISORS LLC | Reduced | $3.9m158.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $953.0k39.1k shares |
| GROUP ONE TRADING LLC | Reduced | $672.9k27.6k shares |
| JANE STREET GROUP, LLC | Reduced | $480.3k19.7k shares |
| WOLVERINE TRADING, LLC | Reduced | $231.6k9.5k shares |
| Walleye Trading LLC | Reduced | $4.9k200 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 Q2 2024
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 Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| OAKTREE CAPITAL MANAGEMENT LP 3.35% of their portfolio | 8.0m $194.2m | Added +1.9m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.09% of their portfolio | 4.2m $102.2m | Added +1.4m |
| BlackRock Inc. 0.00% of their portfolio | 4.1m $100.2m | Added +597.4k |
| MORGAN STANLEY 0.01% of their portfolio | 3.0m $73.4m | Reduced -926.6k |
| TWO SIGMA ADVISERS, LP 0.13% of their portfolio | 2.4m $59.1m | Added +1.9m |
| TWO SIGMA INVESTMENTS, LP 0.13% of their portfolio | 2.2m $53.3m | Added +1.5m |
| Encompass Capital Advisors LLC 2.71% of their portfolio | 2.1m $50.0m | Added +442.9k |
| MARSHALL WACE, LLP 0.06% of their portfolio | 1.8m $43.7m | Added +903.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.07% of their portfolio | 1.7m $42.6m | Added +358.9k |
| LAZARD ASSET MANAGEMENT LLC 0.05% of their portfolio | 1.5m $37.3m | New |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 1.2m $29.8m | Added +850.8k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.2m $28.6m | Added +960.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.10% of their portfolio | 1.1m $25.7m | New |
| Artemis Investment Management LLP 0.34% of their portfolio | 1.0m $25.0m | Added +233.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 952.1k $23.2m | New |
| Walleye Capital LLC 0.21% of their portfolio | 829.6k $20.2m | Added +821.3k |
| Amundi 0.01% of their portfolio | 774.1k $19.4m | Added +57.8k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 731.7k $17.8m | Added +691.6k |
| Gratus Capital, LLC 0.71% of their portfolio | 719.7k $17.5m | Added +21.9k |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 593.4k $14.5m | Added +591.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 559.9k $13.7m | Reduced -55.1k |
| Grand Alliance Asset Management Ltd 6.29% of their portfolio | 540.0k $13.2m | Reduced -160.0k |
| VANGUARD GROUP INC 0.00% of their portfolio | 502.8k $12.3m | Added +259.2k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 480.7k $11.7m | New |
| WEXFORD CAPITAL LP 2.83% of their portfolio | 458.5k $11.2m | Added +172.1k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 402.4k $9.8m | New |
| Gilman Hill Asset Management, LLC 1.76% of their portfolio | 399.7k $9.7m | Reduced -4.4k |
| DNB Asset Management AS 0.05% of their portfolio | 397.6k $9.7m | New |
| FIL Ltd 0.01% of their portfolio | 396.9k $9.7m | Added +344.3k |
| Cubist Systematic Strategies, LLC 0.16% of their portfolio | 380.1k $9.3m | Added +25.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 368.5k $9.0m | Added +224.3k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 355.0k $8.7m | Added +155.2k |
| VALUEWORKS LLC 2.68% of their portfolio | 353.1k $8.6m | Added +4.6k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 347.8k $8.5m | Added +62.8k |
| Ramirez Asset Management, Inc. 1.66% of their portfolio | 333.7k $8.1m | Reduced -17.2k |
| CAPITAL FUND MANAGEMENT S.A. 0.09% of their portfolio | 324.2k $7.9m | Added +39.7k |
| Boston Partners 0.01% of their portfolio | 312.8k $7.6m | Added +220.8k |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group 2.82% of their portfolio | 295.0k $7.2m | Added +75.0k |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 271.6k $6.6m | Added +108.5k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.01% of their portfolio | 261.3k $6.4m | Added +20.4k |
| Hosking Partners LLP 0.23% of their portfolio | 258.7k $6.3m | Reduced -12.4k |
| ARMOR ADVISORS, L.L.C. 4.87% of their portfolio | 252.1k $6.1m | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 251.1k $6.1m | Added +240.4k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 249.9k $6.1m | New |
| Jessup Wealth Management, Inc 2.54% of their portfolio | 243.9k $5.9m | Added +11.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 242.9k $5.9m | Reduced -71.7k |
| NORGES BANK 0.00% of their portfolio | 236.1k $5.8m | Unchanged |
| 683 Capital Management, LLC 0.60% of their portfolio | 235.0k $5.7m | Added +35.0k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 225.6k $5.5m | New |
| GSA CAPITAL PARTNERS LLP 0.36% of their portfolio | 211.4k $5.2m | Added +127.6k |
| HRT FINANCIAL LP 0.03% of their portfolio | 204.0k $5.0m | New |
| Invesco Ltd. 0.00% of their portfolio | 197.2k $4.8m | Added +87.6k |
| Relyea Zuckerberg Hanson LLC 0.65% of their portfolio | 159.7k $3.9m | New |
| LPL Financial LLC 0.00% of their portfolio | 158.8k $3.9m | Added +13.8k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.09% of their portfolio | 156.9k $3.8m | Added +29.0k |
| Graham Capital Management, L.P. 0.12% of their portfolio | 147.1k $3.6m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 146.3k $3.6m | Reduced -154.8k |
| Engineers Gate Manager LP 0.08% of their portfolio | 144.0k $3.5m | Added +106.3k |
| STATE STREET CORP 0.00% of their portfolio | 138.9k $3.4m | Reduced -9.6k |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 125.0k $3.0m | Added +34.9k |
| FMR LLC 0.00% of their portfolio | 122.6k $3.0m | Added +122.3k |
| ROYCE & ASSOCIATES LP 0.03% of their portfolio | 119.1k $2.9m | New |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 116.6k $2.8m | Reduced -7.8k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.07% of their portfolio | 114.3k $2.8m | New |
| Aquatic Capital Management LLC 0.10% of their portfolio | 113.9k $2.8m | Added +42.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 112.7k $2.7m | Reduced -5.2m |
| Allianz Asset Management GmbH 0.00% of their portfolio | 112.5k $2.7m | New |
| Tidal Investments LLC 0.04% of their portfolio | 108.9k $2.7m | Added +55.7k |
| Verition Fund Management LLC 0.02% of their portfolio | 106.5k $2.6m | Added +24.2k |
| Jump Financial, LLC 0.05% of their portfolio | 105.9k $2.6m | Added +53.0k |
| Manatuck Hill Partners, LLC 1.07% of their portfolio | 100.0k $2.4m | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 99.6k $2.4m | Added +25.9k |
| Susquehanna Portfolio Strategies, LLC 0.10% of their portfolio | 94.9k $2.3m | Added +9.3k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 91.1k $2.2m | Added +49.7k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 89.5k $2.2m | Reduced -18.4k |
| CFM WEALTH PARTNERS LLC 0.40% of their portfolio | 89.4k $2.2m | Added +6.2k |
| RBF Capital, LLC 0.13% of their portfolio | 88.9k $2.2m | Unchanged |
| Dakota Wealth Management 0.05% of their portfolio | 80.2k $2.0m | Added +49.2k |
| Pathstone Holdings, LLC 0.01% of their portfolio | 77.7k $1.9m | Reduced -2.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 77.0k $1.9m | Added +1.9k |
| Dynamic Technology Lab Private Ltd 0.21% of their portfolio | 76.8k $1.9m | New |
| Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio | 74.3k $1.8m | Added +3.2k |
| UBS Group AG 0.00% of their portfolio | 69.9k $1.7m | Added +39.2k |
| IQ EQ FUND MANAGEMENT (SINGAPORE) PRIVATE Ltd 0.90% of their portfolio | 65.0k $1.6m | New |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio | 59.0k $1.4m | Added +3.1k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 57.4k $1.4m | Reduced -24.5k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 55.9k $1.4m | Added +16.0k |
| Kestra Advisory Services, LLC 0.01% of their portfolio | 52.7k $1.3m | Reduced -1.8k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.10% of their portfolio | 50.4k $1.2m | Added +21.3k |
| B. Riley Wealth Advisors, Inc. 0.03% of their portfolio | 49.0k $1.2m | Added +13.9k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 48.9k $1.2m | New |
| Campbell & CO Investment Adviser LLC 0.10% of their portfolio | 47.8k $1.2m | New |
| PDT Partners, LLC 0.11% of their portfolio | 46.3k $1.1m | Reduced -163 |
| HARVEY CAPITAL MANAGEMENT INC 0.30% of their portfolio | 46.1k $1.1m | Reduced -7.0k |
| HORIZON KINETICS ASSET MANAGEMENT LLC 0.02% of their portfolio | 44.4k $1.1m | Added +843 |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 43.4k $1.1m | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 42.5k $1.0m | Added +10.5k |
| Quantedge Capital Pte Ltd 0.37% of their portfolio | 41.7k $1.0m | New |
| Global Retirement Partners, LLC 0.03% of their portfolio | 36.8k $898.2k | Added +34.5k |
| Headlands Technologies LLC 0.09% of their portfolio | 35.3k $861.7k | New |