Company · Ownership research

Star Bulk Carriers Corp. SBLK

CIK 0001386716 · CUSIP Y8162K204

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP Y8162K204 (SBLK), not CUSIP Y8162K904 (SBLK), CUSIP Y8162K954 (SBLK), and does not merge CUSIPs.

This page lists the top 20 of 244 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	OAKTREE CAPITAL MANAGEMENT LP CIK 949509 · View history	$194.22M 7,966,426 shares	3.35%	+1.86M(+30.40%)Added	SEC filing ↗ Aug 14, 2024	▾
02	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$102.24M 4,193,642 shares	0.09%	+1.38M(+49.00%)Added	SEC filing ↗ Aug 14, 2024	▾
03	BlackRock Inc. CIK 1364742 · View history	$100.24M 4,111,670 shares	0.00%	+597.42K(+17.00%)Added	SEC filing ↗ Aug 13, 2024	▾
04	MORGAN STANLEY CIK 895421 · Amended · View history	$73.37M 3,009,452 shares	0.01%	+1.70M(+129.40%)Added	SEC filing ↗ May 14, 2025	▾
05	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$59.13M 2,425,459 shares	0.13%	+1.90M(+359.80%)Added	SEC filing ↗ Aug 14, 2024	▾
06	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$53.32M 2,187,055 shares	0.13%	+1.51M(+223.10%)Added	SEC filing ↗ Aug 14, 2024	▾
07	Encompass Capital Advisors LLC CIK 1541901 · View history	$50.03M 2,052,262 shares	2.71%	+442.86K(+27.50%)Added	SEC filing ↗ Aug 14, 2024	▾
08	MARSHALL WACE, LLP CIK 1318757 · View history	$43.67M 1,791,426 shares	0.06%	+903.54K(+101.80%)Added	SEC filing ↗ Aug 14, 2024	▾
09	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$42.57M 1,746,070 shares	0.07%	+358.87K(+25.90%)Added	SEC filing ↗ Aug 9, 2024	▾
10	LAZARD ASSET MANAGEMENT LLC CIK 1207017 · View history	$37.29M 1,529,686 shares	0.05%	+1.53MNew	SEC filing ↗ Aug 14, 2024	▾
11	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$29.77M 1,221,255 shares	0.02%	+850.85K(+229.70%)Added	SEC filing ↗ Aug 14, 2024	▾
12	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$28.56M 1,171,598 shares	0.01%	+960.18K(+454.20%)Added	SEC filing ↗ Aug 13, 2024	▾
13	VOLORIDGE INVESTMENT MANAGEMENT, LLC CIK 1556921 · View history	$25.66M 1,052,515 shares	0.10%	+1.05MNew	SEC filing ↗ Aug 14, 2024	▾
14	Artemis Investment Management LLP CIK 1535385 · View history	$25.01M 1,025,802 shares	0.34%	+233.00K(+29.40%)Added	SEC filing ↗ Jul 15, 2024	▾
15	Bank of New York Mellon Corp CIK 1390777 · View history	$23.21M 952,085 shares	0.00%	+952.09KNew	SEC filing ↗ Jul 25, 2024	▾
16	Walleye Capital LLC CIK 1758720 · View history	$20.23M 829,633 shares	0.21%	+821.26K(+9,810.80%)Added	SEC filing ↗ Aug 14, 2024	▾
17	Amundi CIK 1330387 · View history	$19.35M 774,067 shares	0.01%	+57.82K(+8.10%)Added	SEC filing ↗ Aug 14, 2024	▾
18	Gratus Capital, LLC CIK 1652103 · View history	$17.55M 719,747 shares	0.71%	+21.88K(+3.10%)Added	SEC filing ↗ Jul 25, 2024	▾
19	Qube Research & Technologies Ltd CIK 1729829 · View history	$14.47M 593,398 shares	0.03%	+591.00K(+24,686.90%)Added	SEC filing ↗ Aug 14, 2024	▾
20	WELLS FARGO & COMPANY/MN CIK 72971 · View history	$13.65M 559,935 shares	0.00%	-55.09K(-9.00%)Reduced	SEC filing ↗ Aug 13, 2024	▾

Showing 20 / 244 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

244

Cancelled or null records excluded

Disclosed shares

55,896,314

Not deduplicated across managers

Disclosed value

$1.36B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Star Bulk Carriers Corp. · Q2 2024

Explore all 244 reporting institutions.

This page includes 20 of 244 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.