Algoma Steel Group Inc.

Historical 13F Holders

Symbol
ASTL
CUSIP
015658107
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 015658107 since 12/18/2024, largest first.

Filer % of Class Filed
Maple Rock Capital Partners Inc. 13G/A
15.1% 5/15/2026
Event 3/31/2026
MMCAP International Inc. SPC 13G/A
10.4% 8/14/2026
Event 6/30/2026
Stoney Lonesome HF LP 13G/A
5.4% 8/14/2025
Event 6/30/2025
Donald Smith & Co., Inc. 13G
5.0% 8/11/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
BlackRock, Inc. 13G/A 3.7% 4/29/2025
Event 3/31/2025
Zekelman Industries, Inc. 13D/A
3.1% 9/23/2025
Event 9/10/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q2 102 72.1 M $292 M
2026 Q1 111 72.0 M $297 M
2025 Q4 134 83.2 M $346 M
2025 Q3 139 77.2 M $275 M
2025 Q2 151 80.3 M $554 M
2025 Q1 151 77.3 M $454 M
2024 Q4 154 82.0 M $802 M
2024 Q3 150 78.6 M $800 M
2024 Q2 135 72.4 M $513 M
2024 Q1 128 75.6 M $642 M
2023 Q4 134 72.7 M $729 M
2023 Q3 123 70.9 M $483 M
2023 Q2 131 67.0 M $477 M
2023 Q1 126 66.2 M $535 M
2022 Q4 126 76.4 M $485 M
2022 Q3 121 69.1 M $446 M
2022 Q2 134 107 M $977 M
2022 Q1 91 94.5 M $1.06 B
2021 Q4 69 62.0 M $645 M