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Algoma Steel Group Inc.

ASTL
Exchange
Nasdaq
Industry
Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens)
SEC CIK
0001860805

No open-market purchases or sales by Algoma Steel Group Inc. insiders were filed in the last 90 days; 95 institutions reported holding it in 13F filings for Q2 2026, worth $291.8M in total; no superinvestor holds it.

Other share classesASTLW

Q3 2025 vs. Q2 2025

How the institutions holding Algoma Steel Group Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of ASTL: Q2 2025 compared with Q3 2025
MeasureQ2 2025Q3 2025Change
Holders127118−9
Shares80.2M77.2M−3.01M (−3.8%)
Value$552.9M$274.8M−$278.1M (−50.3%)

New holders (22)

Institutions that held Algoma Steel Group Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to ASTL in Q3 2025
InstitutionSharesValue% of portfolio
Jane Street Group, LLC827,250$2.94M0.00%
D. E. Shaw & Co., Inc.578,460$2.05M0.00%
Cubist Systematic Strategies, LLC464,682$1.65M0.02%
Jump Financial, LLC357,726$1.27M0.02%
Walleye Capital LLC278,955$991.7K0.01%
Point72 Asset Management, L.P.201,100$714.7K0.00%
SIG North Trading, ULC141,917$504.5K0.08%
Trexquant Investment LP139,162$494.7K0.01%
XTX Topco Ltd124,077$441.1K0.02%
Summit Financial, LLC110,333$392.8K0.01%
ExodusPoint Capital Management, LP96,263$342.2K0.00%
Centiva Capital, LP71,755$255.1K0.02%
Wolverine Asset Management LLC54,783$194.8K0.00%
Oxford Asset Management LLP47,595$169.2K0.06%
Nomura Holdings Inc46,000$163.5K0.00%
Prelude Capital Management, LLC26,758$95.1K0.01%
Assenagon Asset Management S.A.22,682$80.6K0.00%
Lighthouse Investment Partners, LLC22,089$78.5K0.00%
Keebeck Alpha, LP20,758$73.8K0.10%
Caitong International Asset Management Co., Ltd5,695$20.2K0.01%
Point72 Asia (Singapore) Pte. Ltd.3,600$12.8K0.00%
Ulland Investment Advisors, LLC1,000$4.00K0.00%

Sold out (31)

Institutions that held Algoma Steel Group Inc. at the end of Q2 2025 and filed for Q3 2025 without it.