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 ($179.5k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $17.70. Options: 13 managers hold calls ($44.1m notional), 12 hold puts ($41.1m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 164 |
| Q4 2022 | 160 |
| Q1 2023 | 173 |
| Q2 2023 | 160 |
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 |
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 |
| Q1 2023 | $96.3m | $110.9m | 1.15 |
| Q2 2023 | $44.1m | $41.1m | 0.93 |
Biggest buyers
| Man Group plc | New | +907.6k |
| JANE STREET GROUP, LLC | Added | +343.5k |
| BlackRock Inc. | Added | +246.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | +199.3k |
| CAPITAL FUND MANAGEMENT S.A. | Added | +197.8k |
| Scion Asset Management, LLC | New | +184.7k |
| CITADEL ADVISORS LLC | New | +156.6k |
| WELLS FARGO & COMPANY/MN | Added | +104.3k |
| THOMAS WHITE INTERNATIONAL LTD | Added | +88.1k |
| Amitell Capital Pte Ltd | Added | +82.9k |
Biggest sellers
| ALLIANCEBERNSTEIN L.P. | Reduced | -1.7m |
| Balyasny Asset Management L.P. | Reduced | -871.3k |
| ExodusPoint Capital Management, LP | Sold out | -544.7k |
| Encompass Capital Advisors LLC | Sold out | -457.5k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -328.3k |
| Mirae Asset Global Investments Co., Ltd. | Sold out | -327.5k |
| Point72 Asset Management, L.P. | Sold out | -326.6k |
| Amundi | Reduced | -268.4k |
| CHURCHILL MANAGEMENT Corp | Sold out | -210.1k |
| Man Group plc | Sold out | -177.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $20.3m1.1m shares |
| JANE STREET GROUP, LLC | Added | $10.4m585.7k shares |
| GROUP ONE TRADING LLC | Reduced | $5.2m295.3k shares |
| CITADEL ADVISORS LLC | Reduced | $4.5m255.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.4m79.6k shares |
| WOLVERINE TRADING, LLC | Added | $1.0m58.2k shares |
| Walleye Trading LLC | Added | $490.3k27.7k shares |
| Walleye Capital LLC | New | $490.3k27.7k shares |
| PEAK6 Investments LLC | Reduced | $270.8k15.3k shares |
| SUMMIT SECURITIES GROUP LLC | Unchanged | $35.0k2.0k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $16.6m938.9k shares |
| GROUP ONE TRADING LLC | Reduced | $9.7m550.6k shares |
| CITADEL ADVISORS LLC | Reduced | $8.3m470.0k shares |
| JANE STREET GROUP, LLC | Reduced | $2.8m155.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.1m116.0k shares |
| PEAK6 Investments LLC | Reduced | $708.0k40.0k shares |
| WOLVERINE TRADING, LLC | Added | $603.1k34.5k shares |
| MILLENNIUM MANAGEMENT LLC | New | $256.6k14.5k shares |
| Walleye Trading LLC | Reduced | $14.2k800 shares |
| Cutler Group LLC / CA | Reduced | $7.0k3.9k 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 2023
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 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| OAKTREE CAPITAL MANAGEMENT LP 6.25% of their portfolio | 26.1m $461.4m | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.04% of their portfolio | 5.1m $89.5m | Reduced -1.7m |
| BlackRock Inc. 0.00% of their portfolio | 1.1m $18.9m | Added +246.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 982.4k $17.4m | Added +58.9k |
| Ion Asset Management Ltd. 1.98% of their portfolio | 958.0k $17.0m | Added +43.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 930.2k $16.5m | Added +104.3k |
| MORGAN STANLEY 0.00% of their portfolio | 918.6k $16.3m | Reduced -31.3k |
| Man Group plc 0.05% of their portfolio | 907.6k $16.1m | New |
| Gratus Capital, LLC 0.85% of their portfolio | 697.1k $12.3m | Added +13.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 632.8k $11.2m | Added +16.4k |
| Philosophy Capital Management LLC 2.02% of their portfolio | 510.2k $9.0m | Unchanged |
| THOMAS WHITE INTERNATIONAL LTD 1.55% of their portfolio | 422.0k $7.5m | Added +88.1k |
| Gilman Hill Asset Management, LLC 1.39% of their portfolio | 421.1k $7.5m | Added +3.1k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 369.8k $6.5m | Added +343.5k |
| VALUEWORKS LLC 2.23% of their portfolio | 348.8k $6.2m | Reduced -375 |
| MIRABELLA FINANCIAL SERVICES LLP 0.58% of their portfolio | 280.8k $5.0m | Reduced -19.2k |
| CAPITAL FUND MANAGEMENT S.A. 0.08% of their portfolio | 274.6k $4.9m | Added +197.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 265.6k $4.7m | Reduced -1.8k |
| Hosking Partners LLP 0.18% of their portfolio | 242.6k $4.3m | Added +21.6k |
| NORGES BANK 0.00% of their portfolio | 236.1k $4.2m | Unchanged |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 229.0k $4.1m | Added +12.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 199.3k $3.5m | New |
| Scion Asset Management, LLC 2.94% of their portfolio | 184.7k $3.3m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 156.6k $2.8m | New |
| VR Advisory Services Ltd 0.85% of their portfolio | 150.0k $2.7m | Unchanged |
| Janney Montgomery Scott LLC 0.01% of their portfolio | 139.3k $2.5m | Reduced -27.0k |
| Prospera Financial Services Inc 0.09% of their portfolio | 139.2k $2.5m | Reduced -815 |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 138.8k $2.5m | Reduced -36.6k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 135.9k $2.4m | Added +4.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 127.1k $2.2m | Added +68.7k |
| Marketfield Asset Management LLC 1.72% of their portfolio | 120.5k $2.1m | Added +4.5k |
| HARVEY CAPITAL MANAGEMENT INC 0.69% of their portfolio | 105.9k $1.9m | Reduced -5.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 103.7k $1.8m | Reduced -27.8k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 97.4k $1.7m | Reduced -23.0k |
| Amitell Capital Pte Ltd 1.37% of their portfolio | 96.6k $1.7m | Added +82.9k |
| LPL Financial LLC 0.00% of their portfolio | 90.3k $1.6m | Added +9.3k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 89.9k $1.6m | Reduced -871.3k |
| Invesco Ltd. 0.00% of their portfolio | 89.2k $1.6m | Added +2.2k |
| RBF Capital, LLC 0.10% of their portfolio | 88.9k $1.6m | Unchanged |
| CFM WEALTH PARTNERS LLC 0.36% of their portfolio | 84.2k $1.5m | Added +21 |
| Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio | 83.3k $1.5m | Reduced -8.3k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 80.0k $1.4m | Added +3.0k |
| STATE STREET CORP 0.00% of their portfolio | 78.9k $1.4m | Added +2.7k |
| FIL Ltd 0.00% of their portfolio | 74.8k $1.3m | Unchanged |
| Artemis Investment Management LLP 0.02% of their portfolio | 73.5k $1.3m | Added +1.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 72.1k $1.3m | Added +18.4k |
| ARMOR ADVISORS, L.L.C. 1.23% of their portfolio | 71.6k $1.3m | Not comparable |
| MARSHALL WACE, LLP 0.00% of their portfolio | 63.5k $1.1m | New |
| CIBC Private Wealth Group LLC 0.00% of their portfolio | 60.6k $1.1m | New |
| Paradiem, LLC 0.30% of their portfolio | 58.7k $1.0m | Added +3.6k |
| Quantedge Capital Pte Ltd 0.45% of their portfolio | 57.4k $1.0m | Reduced -85.5k |
| Boston Partners 0.00% of their portfolio | 52.8k $935.1k | Added +4.4k |
| HORIZON KINETICS ASSET MANAGEMENT LLC 0.02% of their portfolio | 52.6k $931.3k | Added +229 |
| Federation des caisses Desjardins du Quebec 0.01% of their portfolio | 50.8k $899.3k | Reduced -5.3k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 46.8k $828.2k | Reduced -57 |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 46.0k $815.0k | Reduced -1.1k |
| Golden Green, Inc. 0.87% of their portfolio | 45.2k $799.2k | Reduced -649 |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 44.8k $792.3k | Reduced -328.3k |
| Invst, LLC 0.11% of their portfolio | 44.2k $782.8k | Added +98 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio | 43.1k $762.8k | Reduced -28.9k |
| Handelsbanken Fonder AB 0.00% of their portfolio | 40.3k $713.0k | New |
| B. Riley Wealth Advisors, Inc. 0.02% of their portfolio | 39.9k $707.6k | Reduced -2.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 34.1k $603.6k | Added +9.8k |
| HighTower Advisors, LLC 0.00% of their portfolio | 33.0k $586.0k | Added +2.8k |
| HRT FINANCIAL LP 0.01% of their portfolio | 30.8k $544.0k | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 30.3k $535.8k | Reduced -72.1k |
| GUIDANCE CAPITAL, INC 0.24% of their portfolio | 29.7k $553.1k | First filing |
| Atria Wealth Solutions, Inc. 0.01% of their portfolio | 27.0k $478.1k | Reduced -3.2k |
| C2C Wealth Management, LLC 0.06% of their portfolio | 26.0k $457.6k | Reduced -625 |
| GROUP ONE TRADING LLC 0.02% of their portfolio | 24.5k $433.7k | New |
| Sigma Planning Corp 0.02% of their portfolio | 24.2k $427.7k | Reduced -8.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 23.9k $422.4k | Added +11.9k |
| UBS Group AG 0.00% of their portfolio | 22.3k $395.2k | Reduced -935 |
| Essex Financial Services, Inc. 0.04% of their portfolio | 22.2k $393.1k | Added +20 |
| SIMPLEX TRADING, LLC 0.02% of their portfolio | 20.6k $365.0k | Added +1.8k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 20.0k $354.4k | Reduced -416 |
| Apollon Wealth Management, LLC 0.02% of their portfolio | 19.4k $343.8k | Added +3.3k |
| Tidal Investments LLC 0.01% of their portfolio | 19.1k $338.0k | Reduced -19.3k |
| Legal & General Group Plc 0.00% of their portfolio | 19.0k $336.5k | Reduced -21.6k |
| Astoria Portfolio Advisors LLC. 0.13% of their portfolio | 18.6k $336.5k | Added +361 |
| Bayesian Capital Management, LP 0.03% of their portfolio | 18.2k $322.1k | New |
| Vident Investment Advisory, LLC 0.01% of their portfolio | 18.2k $321.9k | Reduced -1.9k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 18.0k $318.6k | Unchanged |
| Cetera Advisor Networks LLC 0.00% of their portfolio | 17.8k $315.8k | New |
| Purus Wealth Management, LLC 0.20% of their portfolio | 17.6k $310.8k | Reduced -589 |
| SG Americas Securities, LLC 0.00% of their portfolio | 17.4k $307.0k | New |
| Kestra Advisory Services, LLC 0.00% of their portfolio | 16.8k $297.2k | Added +237 |
| RITHOLTZ WEALTH MANAGEMENT 0.01% of their portfolio | 16.0k $283.8k | Reduced -10.9k |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 15.6k $276.9k | Reduced -1.0k |
| Caisse de depot et placement du Quebec 0.00% of their portfolio | 15.5k $274.4k | Added +200 |
| Aquatic Capital Management LLC 0.01% of their portfolio | 15.5k $274.0k | Reduced -12.2k |
| Ruffer LLP 0.02% of their portfolio | 15.4k $273.2k | New |
| MITCHELL MCLEOD PUGH & WILLIAMS INC 0.08% of their portfolio | 15.3k $271.3k | Unchanged |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 15.2k $269.4k | Reduced -4.6k |
| Principle Wealth Partners LLC 0.03% of their portfolio | 15.1k $267.2k | Unchanged |
| MAVERICK CAPITAL LTD 0.01% of their portfolio | 14.8k $261.5k | New |
| BARCLAYS PLC 0.00% of their portfolio | 14.7k $260.9k | Reduced -11.2k |
| Sippican Capital Advisors 0.23% of their portfolio | 14.2k $252.1k | Unchanged |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 13.6k $241.0k | Reduced -3.8k |
| PFG Investments, LLC 0.04% of their portfolio | 13.6k $241.3k | Added +923 |