Company · Ownership research

Algoma Steel Group Inc. ASTL

CIK 0001860805 · CUSIP 015658107

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 015658107 (ASTL), not CUSIP 015658907 (ASTL), CUSIP 015658957 (ASTL), CUSIP 015658958 (ASTL), and does not merge CUSIPs.

This page lists the top 20 of 132 rows by value; the complete set is available through the API.

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	DONALD SMITH & CO., INC. CIK 814375 · View history	$43.84M 8,088,120 shares	1.07%	+20.52K(+0.30%)Added	SEC filing ↗ May 12, 2025	▾
02	Maple Rock Capital Partners Inc. CIK 1658363 · View history	$38.48M 7,100,000 shares	2.81%	+1.01M(+16.50%)Added	SEC filing ↗ May 15, 2025	▾
03	MMCAP International Inc. SPC CIK 1304857 · View history	$36.00M 6,641,417 shares	6.13%	+21.41K(+0.30%)Added	SEC filing ↗ May 12, 2025	▾
04	BlackRock, Inc. CIK 2012383 · View history	$31.41M 5,795,561 shares	0.00%	+212.23K(+3.80%)Added	SEC filing ↗ May 2, 2025	▾
05	Nuveen, LLC CIK 1871926 · View history	$28.19M 304,734 shares	0.01%	—	SEC filing ↗ May 12, 2025	▾
06	INVESCO SENIOR SECURED MANAGEMENT INC /ADV CIK 870481 · View history	$25.25M 3,233,117 shares	29.82%	0(0.00%)Unchanged	SEC filing ↗ May 12, 2025	▾
07	FMR LLC CIK 315066 · Amended · View history	$24.91M 4,595,646 shares	0.00%	+383.73K(+9.10%)Added	SEC filing ↗ Nov 5, 2026	▾
08	CONTRARIAN CAPITAL MANAGEMENT, L.L.C. CIK 1050417 · View history	$19.36M 3,572,018 shares	4.97%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2025	▾
09	Scheer, Rowlett & Associates Investment Management Ltd. CIK 1426327 · View history	$15.79M 2,908,572 shares	1.17%	+729.21K(+33.50%)Added	SEC filing ↗ May 12, 2025	▾
10	GOLDENTREE ASSET MANAGEMENT LP CIK 1278951 · View history	$13.52M 2,493,548 shares	1.06%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2025	▾
11	LITTLEJOHN & CO LLC CIK 1042537 · View history	$11.94M 2,202,695 shares	6.22%	+722.14K(+48.80%)Added	SEC filing ↗ May 13, 2025	▾
12	J. Goldman & Co LP CIK 1412741 · View history	$10.10M 1,864,177 shares	0.36%	+637.80K(+52.00%)Added	SEC filing ↗ May 15, 2025	▾
13	TOWLE & CO CIK 1224014 · View history	$9.77M 1,801,665 shares	2.13%	-48.53K(-2.60%)Reduced	SEC filing ↗ May 15, 2025	▾
14	INTACT INVESTMENT MANAGEMENT INC. CIK 1443077 · View history	$7.95M 1,463,761 shares	0.27%	+288.86K(+24.60%)Added	SEC filing ↗ Apr 22, 2025	▾
15	Solas Capital Management, LLC CIK 1604867 · View history	$7.92M 1,460,646 shares	4.45%	+400.00K(+37.70%)Added	SEC filing ↗ May 15, 2025	▾
16	AEGIS FINANCIAL CORP CIK 1140753 · View history	$7.91M 1,459,903 shares	6.75%	0(0.00%)Unchanged	SEC filing ↗ May 9, 2025	▾
17	TCW GROUP INC CIK 850401 · View history	$7.63M 1,408,221 shares	0.07%	-180.40K(-11.40%)Reduced	SEC filing ↗ May 7, 2025	▾
18	AYAL Capital Advisors Ltd CIK 2011524 · View history	$6.74M 1,242,680 shares	4.47%	+293.40K(+30.90%)Added	SEC filing ↗ May 15, 2025	▾
19	Woodline Partners LP CIK 1784547 · View history	$6.73M 1,240,894 shares	0.04%	-1.60M(-56.40%)Reduced	SEC filing ↗ May 15, 2025	▾
20	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$6.00M 1,106,685 shares	0.00%	-210.40K(-16.00%)Reduced	SEC filing ↗ May 14, 2025	▾

Showing 20 / 132 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

132

Cancelled or null records excluded

Disclosed shares

77,332,035

Not deduplicated across managers

Disclosed value

$454.30M

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.

Algoma Steel Group Inc. · Q1 2025

Explore all 132 reporting institutions.

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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.