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 98 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	Maple Rock Capital Partners Inc. CIK 1658363 · View history	$65.79M 15,930,818 shares	2.14%	+1.50M(+10.40%)Added	SEC filing ↗ May 15, 2026	▾
02	MMCAP International Inc. SPC CIK 1304857 · View history	$53.05M 12,845,622 shares	4.58%	+1.36M(+11.80%)Added	SEC filing ↗ May 15, 2026	▾
03	DONALD SMITH & CO., INC. CIK 814375 · View history	$24.90M 6,028,929 shares	0.45%	+167.30K(+2.90%)Added	SEC filing ↗ May 14, 2026	▾
04	BlackRock, Inc. CIK 2012383 · View history	$17.00M 4,115,453 shares	0.00%	-4.39M(-51.60%)Reduced	SEC filing ↗ May 13, 2026	▾
05	LITTLEJOHN & CO LLC CIK 1042537 · View history	$14.23M 3,446,503 shares	13.49%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2026	▾
06	Scheer, Rowlett & Associates Investment Management Ltd. CIK 1426327 · View history	$13.24M 3,207,480 shares	0.95%	-129.04K(-3.90%)Reduced	SEC filing ↗ May 11, 2026	▾
07	AEGIS FINANCIAL CORP CIK 1140753 · View history	$7.38M 1,786,122 shares	1.27%	0(0.00%)Unchanged	SEC filing ↗ May 13, 2026	▾
08	LM Asset Management Inc. CIK 2057190 · View history	$7.29M 1,765,000 shares	4.40%	+295.00K(+20.10%)Added	SEC filing ↗ May 11, 2026	▾
09	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$7.12M 1,725,758 shares	0.02%	-539.11K(-23.80%)Reduced	SEC filing ↗ May 11, 2026	▾
10	CDC Financial, Inc. CIK 2077836 · View history	$6.66M 1,613,749 shares	5.52%	+33.00K(+2.10%)Added	SEC filing ↗ May 15, 2026	▾
11	MORGAN STANLEY CIK 895421 · View history	$6.13M 1,483,711 shares	0.00%	+443.17K(+42.60%)Added	SEC filing ↗ May 15, 2026	▾
12	Sourcerock Group LLC CIK 1822531 · View history	$5.40M 1,306,403 shares	0.23%	+1.31MNew	SEC filing ↗ May 15, 2026	▾
13	Solas Capital Management, LLC CIK 1604867 · View history	$4.33M 1,047,454 shares	2.49%	-21.90K(-2.00%)Reduced	SEC filing ↗ May 15, 2026	▾
14	Bracebridge Capital, LLC CIK 1426486 · View history	$3.82M 924,931 shares	0.69%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2026	▾
15	JANE STREET GROUP, LLC CIK 1595888 · View history	$3.70M 895,566 shares	0.00%	+193.62K(+27.60%)Added	SEC filing ↗ May 12, 2026	▾
16	Quadrature Capital Ltd CIK 1651424 · View history	$3.61M 878,540 shares	0.04%	-139.56K(-13.70%)Reduced	SEC filing ↗ May 15, 2026	▾
17	JB CAPITAL PARTNERS LP CIK 1138532 · View history	$3.60M 872,277 shares	0.62%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2026	▾
18	TD Asset Management Inc CIK 1056053 · View history	$3.46M 841,904 shares	0.00%	-845.52K(-50.10%)Reduced	SEC filing ↗ May 11, 2026	▾
19	Bain Capital Credit, LP CIK 1317947 · View history	$3.41M 825,777 shares	1.13%	0(0.00%)Unchanged	SEC filing ↗ May 14, 2026	▾
20	TCW GROUP INC CIK 850401 · View history	$3.17M 768,178 shares	0.02%	+95.50K(+14.20%)Added	SEC filing ↗ May 14, 2026	▾

Showing 20 / 98 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

71,969,593

Not deduplicated across managers

Disclosed value

$297.12M

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 2026

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This page includes 20 of 98 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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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.