ASTL · NASDAQ · Steel

Algoma Steel Group

Makes sheet and plate steel as its Sault Ste. Marie plant converts to electric-arc furnaces.

$4.18
After-hours close0.00 (0.00%)
At close$4.18(−2.56%)

Breakdown13F · Form 4

Institutions 68.29%Insiders

Shares outstanding 105.39M · Float 97.89M · 92.9% free float

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Maple Rock Capital Partners Inc.15.93M15.10%13GMay 15, 2026
MMCAP International Inc. SPC12.85M12.20%13GMay 15, 2026
Donald Smith & Co., Inc.6.03M5.80%13GMay 13, 2026
Stoney Lonesome HF LP5.47M5.10%13GAug 14, 2025
BlackRock, Inc.4.12M3.91%13FMay 13, 2026

Institutions13F, as of Mar 31, 2026

110 holders · 71.97M shares · 16 new positions · 48 increased · 30 reduced · 26 closed

HolderShares% outstandingChg q/qFiled
Maple Rock Capital Partners Inc.15.93M15.12%+1.50MMay 15, 2026
Mmcap International Inc. SPC12.85M12.19%+1.36MMay 15, 2026
Donald Smith & Co., Inc.6.03M5.72%+167.3KMay 14, 2026
BlackRock, Inc.4.12M3.91%−4.39MMay 13, 2026
Littlejohn & Co LLC3.45M3.27%0May 14, 2026
Scheer, Rowlett & Associates Investment Management Ltd.3.21M3.04%−129.0KMay 11, 2026
Aegis Financial Corp1.79M1.69%0May 13, 2026
LM Asset (Im) Inc.1.77M1.67%+295.0KMay 11, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Maple Rock Capital Partners Inc.15.10%15.93M13GMay 15, 2026
MMCAP International Inc. SPC12.20%12.85M13GMay 15, 2026
Donald Smith & Co., Inc.5.80%6.03M13GMay 13, 2026
Stoney Lonesome HF LP5.10%5.47M13GAug 14, 2025

InsidersForm 4

Latest trades

Nothing filed in the last 12 months.

CongressHouse and Senate disclosures

Not reported.