Who owns Star Bulk Carriers (SBLK)
Which tracked institutional funds hold SBLK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SBLK company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
49 tracked funds added or opened SBLK while 45 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SBLK’s largest tracked holder by dollar value, TWO SIGMA INVESTMENTS, LP, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SBLK divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 192 tracked filers holding SBLK, 88 increased or opened the position and 94 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SBLK between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 11
- Encompass Capital Advisors LLC$24M
- First Eagle Investment Management, LLC$13M
- J. Safra Sarasin Holding AG$6M
- SPROTT INC.$5M
- WEXFORD CAPITAL LP$4M
- SEI INVESTMENTS CO$2M
Full exits 13
- COOPER CREEK PARTNERS MANAGEMENT LLC$20M
- HRT FINANCIAL LP$18M
- GSA CAPITAL PARTNERS LLP$6M
- Campbell & CO Investment Adviser LLC$4M
- Hartree Partners, LP$3M
- ExodusPoint Capital Management, LP$3M
Largest adds
- BlackRock, Inc.$57M
- TWO SIGMA INVESTMENTS, LP$19M
- Artemis Investment Management LLP$17M
- Marex Group Ltd$15M
- GOLDMAN SACHS GROUP INC$10M
- DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.$8M
Largest trims
- Boston Partners$18M
- D. E. Shaw & Co., Inc.$12M
- MORGAN STANLEY$9M
- TUDOR INVESTMENT CORP ET AL$9M
- JANE STREET GROUP, LLC$9M
- MARSHALL WACE, LLP$8M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| TWO SIGMA INVESTMENTS, LP added | 3,530,020 | $88M | 9.2% | 2026-Q2 |
| BlackRock, Inc. added | 2,817,294 | $70M | 7.4% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 2,099,637 | $52M | 5.5% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 2,027,422 | $51M | 5.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,014,371 | $50M | 5.3% | 2026-Q2 |
| Philosophy Capital Management LLC trimmed | 1,752,666 | $44M | 4.6% | 2026-Q2 |
| Focus Partners Wealth added | 1,263,659 | $32M | 3.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 1,156,624 | $29M | 3.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,040,248 | $26M | 2.7% | 2026-Q2 |
| FEARNLEY ASSET MANAGEMENT AS added | 1,004,209 | $25M | 2.6% | 2026-Q2 |
| Encompass Capital Advisors LLC trimmed | 962,500 | $24M | 2.5% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 926,378 | $23M | 2.4% | 2026-Q2 |
| Boston Partners trimmed | 788,200 | $20M | 2.1% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 786,668 | $20M | 2.1% | 2026-Q2 |
| Artemis Investment Management LLP added | 761,688 | $19M | 2.0% | 2026-Q2 |
| Marex Group Ltd added | 728,022 | $18M | 1.9% | 2026-Q2 |
| Bridgewater Associates, LP added | 718,057 | $18M | 1.9% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 675,646 | $17M | 1.7% | 2026-Q2 |
| Allianz Asset Management GmbH trimmed | 649,841 | $16M | 1.7% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 594,246 | $15M | 1.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 591,314 | $15M | 1.5% | 2026-Q2 |
| DNB Asset Management AS trimmed | 585,932 | $15M | 1.5% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 578,594 | $14M | 1.5% | 2026-Q2 |
| Marnell Management LLC added | 515,698 | $13M | 1.3% | 2026-Q2 |
| First Eagle Investment Management, LLC new | 515,000 | $13M | 1.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 472,800 | $12M | 1.2% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 437,815 | $11M | 1.1% | 2026-Q2 |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. added | 410,700 | $10M | 1.1% | 2026-Q2 |
| NORGES BANK added | 396,000 | $10M | 1.0% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 376,311 | $9M | 1.0% | 2026-Q2 |
| UBS Group AG added | 375,192 | $9M | 1.0% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 367,681 | $9M | 1.0% | 2026-Q2 |
| VALUEWORKS LLC trimmed | 354,140 | $9M | 0.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 336,976 | $8M | 0.9% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 333,897 | $8M | 0.9% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 305,490 | $8M | 0.8% | 2026-Q2 |
| CITIGROUP INC added | 295,189 | $7M | 0.8% | 2026-Q2 |
| LPL Financial LLC trimmed | 268,577 | $7M | 0.7% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 268,029 | $7M | 0.7% | 2026-Q2 |
| J. Safra Sarasin Holding AG new | 228,694 | $6M | 0.6% | 2026-Q2 |
| SPROTT INC. added | 204,784 | $5M | 0.5% | 2026-Q2 |
| Numerai GP LLC added | 159,066 | $4M | 0.4% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 155,386 | $4M | 0.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 153,810 | $4M | 0.4% | 2026-Q2 |
| WEXFORD CAPITAL LP added | 144,800 | $4M | 0.4% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 138,032 | $3M | 0.4% | 2026-Q2 |
| CFM WEALTH PARTNERS LLC added | 121,072 | $3M | 0.3% | 2026-Q2 |
| KLP KAPITALFORVALTNING AS trimmed | 120,000 | $3M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 115,619 | $3M | 0.3% | 2026-Q2 |
| Manatuck Hill Partners, LLC trimmed | 108,800 | $3M | 0.3% | 2026-Q2 |
| STATE STREET CORP trimmed | 105,539 | $3M | 0.3% | 2026-Q2 |
| Mraz, Amerine & Associates, Inc. | 97,991 | $2M | 0.3% | 2026-Q2 |
| RBF Capital, LLC | 85,000 | $2M | 0.2% | 2026-Q2 |
| Buckland Partners Management Co LLC | 84,590 | $2M | 0.2% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 83,919 | $2M | 0.2% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd trimmed | 83,756 | $2M | 0.2% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 80,690 | $2M | 0.2% | 2026-Q2 |
| Impala Asset Management LLC trimmed | 80,479 | $2M | 0.2% | 2026-Q2 |
| NORTHERN TRUST CORP added | 77,342 | $2M | 0.2% | 2026-Q2 |
| GRAHAM CAPITAL WEALTH MANAGEMENT, LLC added | 75,823 | $2M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO new | 73,163 | $2M | 0.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC | 68,611 | $2M | 0.2% | 2026-Q2 |
| Raiffeisen Bank International AG added | 66,429 | $2M | 0.2% | 2026-Q2 |
| Headlands Technologies LLC added | 66,333 | $2M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 65,914 | $2M | 0.2% | 2026-Q2 |
| XTX Topco Ltd trimmed | 65,172 | $2M | 0.2% | 2026-Q2 |
| Relyea Zuckerberg Hanson LLC | 64,390 | $2M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 62,200 | $2M | 0.2% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 54,886 | $1M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 54,281 | $1M | 0.1% | 2026-Q2 |
| Dakota Wealth Management added | 54,155 | $1M | 0.1% | 2026-Q2 |
| BTG Pactual Asset Management US LLC added | 53,570 | $1M | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 53,523 | $1M | 0.1% | 2026-Q2 |
| HORIZON KINETICS ASSET MANAGEMENT LLC added | 52,066 | $1M | 0.1% | 2026-Q2 |
| Tidal Investments LLC trimmed | 50,251 | $1M | 0.1% | 2026-Q2 |
| Point Nemo Capital, LLC new | 47,112 | $1M | 0.1% | 2026-Q2 |
| WINTON GROUP Ltd trimmed | 42,600 | $1M | 0.1% | 2026-Q2 |
| KESTRA PRIVATE WEALTH SERVICES, LLC new | 40,539 | $1M | 0.1% | 2026-Q2 |
| Glenorchy Capital Ltd added | 40,242 | $1M | 0.1% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 40,127 | $1M | 0.1% | 2026-Q2 |
| IMC-Chicago, LLC added | 36,255 | $905K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 35,801 | $894K | 0.1% | 2026-Q2 |
| LANARK FINANCIAL, INC. | 35,425 | $885K | 0.1% | 2026-Q2 |
| TOTH FINANCIAL ADVISORY CORP added | 35,382 | $883K | 0.1% | 2026-Q2 |
| Integrated Wealth Concepts LLC added | 32,390 | $809K | 0.1% | 2026-Q2 |
| Jump Financial, LLC trimmed | 31,399 | $784K | 0.1% | 2026-Q2 |
| ION Fund Management Ltd | 30,270 | $756K | 0.1% | 2026-Q2 |
| DAVENPORT & Co LLC added | 29,822 | $745K | 0.1% | 2026-Q2 |
| Mitsubishi UFJ Trust & Banking Corp new | 29,817 | $745K | 0.1% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. trimmed | 29,126 | $727K | 0.1% | 2026-Q2 |
| Counterpoint Mutual Funds LLC trimmed | 24,712 | $617K | 0.1% | 2026-Q2 |
| Pathstone Holdings, LLC trimmed | 23,875 | $596K | 0.1% | 2026-Q2 |
| Mariner, LLC added | 22,377 | $559K | 0.1% | 2026-Q2 |
| CenterBook Partners LP added | 22,212 | $555K | 0.1% | 2026-Q2 |
| Sippican Capital Advisors trimmed | 21,627 | $540K | 0.1% | 2026-Q2 |
| Gotham Asset Management, LLC | 21,600 | $539K | 0.1% | 2026-Q2 |
| EAGLE HARBOR ASSET MANAGEMENT INC /ADV trimmed | 21,032 | $525K | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 20,489 | $512K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 20,359 | $508K | 0.1% | 2026-Q2 |
| Vident Advisory, LLC trimmed | 20,029 | $500K | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.