Algoma Steel ASTL Institutional Ownership

NASDAQ ASTL

$4.13 -0.05 (-1.08%)

As of: Oct 1, 2026 · 12:33 PM EDT

Institutions by Trading Activity

96 Institutions

Increased 42 43.8%

Unchanged 18 18.8%

Reduced 36 37.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

66.76%

▲+0.55 pp QoQ

Shares Held by Institutions

72.57Mn

of 108.70Mn outstanding

▲+4.10% QoQ

Shares Outstanding

108.70Mn

36.13Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-2 vs prior quarter

Net Shares Added (QoQ)

+2.86Mn

accumulated since last quarter

Value of Holdings

$302.62Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Algoma Steel Group Inc. (NASDAQ:ASTL) has 96 institutional investors that have filed 13F reports for the period ending June 2026.

These investors collectively held 66.8% of Algoma Steel's outstanding shares in June 2026, up from 66.2% in March 2026.
Their total shares held in ASTL increased 4.1% from the prior quarter, while the number of investors in Algoma Steel decreased 24.41% year over year.
During the quarter, 42 of these 96 funds increased positions in ASTL, 36 reduced exposure, and 18 held steady.
In total, institutional investors held 72.57Mn shares in Algoma Steel as of June 2026, up by 2.86Mn shares quarter on quarter, and down 6.95Mn shares year over year.
Maple Rock Capital Partners Inc. leads ownership in ASTL with 16.86Mn shares as of June 30, 2026, equal to 15.51% of outstanding shares.
The biggest buyers of Algoma Steel for the quarter ending June 2026 included BRIGHTLINE CAPITAL MANAGEMENT, LLC (1.66Mn), Morgan Stanley (1.47Mn), MACKENZIE FINANCIAL CORP (1.23Mn), Maple Rock Capital Partners Inc. (931.0K), TWO SIGMA INVESTMENTS, LP (771.91K).
The biggest sellers of Algoma Steel for the quarter ending June 2026 included LITTLEJOHN & CO LLC (1.93Mn), MMCAP International Inc. SPC (1.89Mn), JANE STREET GROUP, LLC (842.88K), DONALD SMITH & CO., INC. (751.3K), LM Asset Management Inc. (749.0K).
Per Business Quant, the top 10 investors in ASTL for the quarter ending June 2026 include Maple Rock Capital Partners Inc. (16.86Mn), MMCAP International Inc. SPC (10.95Mn), DONALD SMITH & CO., INC. (5.28Mn), BlackRock, Inc. (4.14Mn), Scheer, Rowlett & Associates Investment Management Ltd. (3.85Mn), Morgan Stanley (2.96Mn), AEGIS FINANCIAL CORP (1.79Mn), CDC Financial, Inc. (1.75Mn), BRIGHTLINE CAPITAL MANAGEMENT, LLC (1.66Mn), LITTLEJOHN & CO LLC (1.52Mn).

Form 13F Holdings

96 Institutional Holders

Report period 30 Jun, 2026

Total shares held 72.57Mn

Of outstanding 66.76%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Maple Rock Capital Partners Inc.	0001658363	16,861,818	15.51%	▲931,000	+5.84%	$68.29Mn
2	MMCAP International Inc. SPC	0001304857	10,954,738	10.08%	▼1,890,884	-14.72%	$44.37Mn
3	DONALD SMITH & CO., INC.	0000814375	5,277,631	4.86%	▼751,298	-12.46%	$21.37Mn
4	BlackRock, Inc.	0002012383	4,143,265	3.81%	▲27,812	+0.68%	$16.78Mn
5	Scheer, Rowlett & Associates Investment Management Ltd.	0001426327	3,846,390	3.54%	▲638,910	+19.92%	$15.66Mn
6	Morgan Stanley	0000895421	2,958,350	2.72%	▲1,474,639	+99.39%	$11.98Mn
7	AEGIS FINANCIAL CORP	0001140753	1,786,122	1.64%	0	0.00%	$7.23Mn
8	CDC Financial, Inc.	0002077836	1,745,647	1.61%	▲131,898	+8.17%	$7.07Mn
9	BRIGHTLINE CAPITAL MANAGEMENT, LLC	0001432450	1,660,000	1.53%	▲1,660,000	0.00%	$6.72Mn
10	LITTLEJOHN & CO LLC	0001042537	1,518,714	1.40%	▼1,927,789	-55.93%	$6.15Mn
11	Connor, Clark & Lunn Investment Management Ltd.	0001596800	1,387,320	1.28%	▼338,438	-19.61%	$5.65Mn
12	MACKENZIE FINANCIAL CORP	0000919859	1,329,806	1.22%	▲1,231,033	+1,246.33%	$4.96Mn
13	Sourcerock Group LLC	0001822531	1,247,507	1.15%	▼58,896	-4.51%	$5.05Mn
14	TWO SIGMA INVESTMENTS, LP	0001179392	1,041,811	0.96%	▲771,911	+286.00%	$4.22Mn
15	LM Asset Management Inc.	0002057190	1,016,000	0.93%	▼749,000	-42.44%	$4.11Mn
16	Bracebridge Capital, LLC	0001426486	924,931	0.85%	0	0.00%	$3.75Mn
17	JB CAPITAL PARTNERS LP	0001138532	872,277	0.80%	0	0.00%	$3.53Mn
18	CITADEL ADVISORS LLC	0001423053	845,935	0.78%	▲578,192	+215.95%	$3.43Mn
19	Bain Capital Credit, LP	0001317947	825,777	0.76%	0	0.00%	$3.34Mn
20	Jpmorgan Chase & Co	0000019617	810,208	0.75%	▲579,391	+251.02%	$3.25Mn

Showing 1 to 20 of 96 holders