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Algoma Steel Group Inc.

ASTLW
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; 20 institutions reported holding it in 13F filings for Q2 2026, worth $338.5K in total; no superinvestor holds it.

Other share classesASTL

13F holders, Q2 2026

Institutional positions in Algoma Steel Group Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
20
0 vs. Q1 2026
Shares held
10.7M
+440.6K (+4.3%) vs. Q1 2026
Total value
$338.5K
−$613.5K (−64.4%) vs. Q1 2026
New holders
1
7 more added
Sold out
1
1 more reduced

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ASTLW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 20 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 34 institutionsQ1 2022: 29 institutionsQ2 2022: 34 institutionsQ3 2022: 36 institutionsQ4 2022: 33 institutionsQ1 2023: 26 institutionsQ2 2023: 26 institutionsQ3 2023: 27 institutionsQ4 2023: 30 institutionsQ1 2024: 27 institutionsQ2 2024: 27 institutionsQ3 2024: 27 institutionsQ4 2024: 24 institutionsQ1 2025: 23 institutionsQ2 2025: 23 institutionsQ3 2025: 21 institutionsQ4 2025: 21 institutionsQ1 2026: 20 institutionsQ2 2026: 20 institutions
Value heldQ2 2026: $338.5K
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $11.0MQ1 2022: $14.3MQ2 2022: $12.8MQ3 2022: $4.78MQ4 2022: $5.93MQ1 2023: $10.7MQ2 2023: $10.3MQ3 2023: $10.3MQ4 2023: $15.6MQ1 2024: $10.9MQ2 2024: $6.35MQ3 2024: $7.17MQ4 2024: $10.7MQ1 2025: $2.49MQ2 2025: $3.40MQ3 2025: $1.01MQ4 2025: $498.7KQ1 2026: $952.0KQ2 2026: $338.5K
Institutions holding ASTLW and their total value by quarter
QuarterHoldersValue
Q2 202620$338.5K
Q1 202620$952.0K
Q4 202521$498.7K
Q3 202521$1.01M
Q2 202523$3.40M
Q1 202523$2.49M
Q4 202424$10.7M
Q3 202427$7.17M
Q2 202427$6.35M
Q1 202427$10.9M
Q4 202330$15.6M
Q3 202327$10.3M
Q2 202326$10.3M
Q1 202326$10.7M
Q4 202233$5.93M
Q3 202236$4.78M
Q2 202234$12.8M
Q1 202229$14.3M
Q4 202134$11.0M
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding Algoma Steel Group Inc.; share changes are against Q1 2026.

Institutions holding ASTLW in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
CDC Financial, Inc.4,153,996$124.6K0.10%00.0%Unchanged
LMR Partners LLP2,808,732$84.3K0.00%00.0%Unchanged
K2 Principal Fund, L.P.690,879$34.5K0.00%00.0%Unchanged
Aristeia Capital LLC810,424$26.2K0.00%00.0%Unchanged
D. E. Shaw & Co., Inc.557,746$19.4K0.00%00.0%Unchanged
Aequim Alternative Investments LP414,191$14.4K0.00%00.0%Unchanged
StoneX Group Inc.207,927$8.79K0.00%+138,618+200.0%Added
Wolverine Asset Management LLC229,858$6.90K0.00%+229,858New
Virtu Financial LLC164,870$6.00K0.00%+72,863+79.2%Added
Toronto Dominion Bank119,621$3.59K0.00%+12,521+11.7%Added
Jane Street Group, LLC100,764$3.02K0.00%+2,607+2.7%Added
Claret Asset Management Corp102,000$3.00K0.00%00.0%Unchanged
Caption Management, LLC44,550$1.34K0.00%00.0%Unchanged
Susquehanna International Group, LLP30,310$1.05K0.00%+8,316+37.8%Added
Royal Bank of Canada17,427$1.00K0.00%−31,516−64.4%Reduced
LPL Financial LLC12,100$3630.00%00.0%Unchanged
UBS Group AG4,038$1210.00%+2,959+274.2%Added
Clear Street Group Inc.100$30.00%00.0%Unchanged
National Bank of Canada40,982––+14,600+55.3%Added
Boothbay Fund Management, LLC185,000––00.0%Unchanged
Saba Capital Management, L.P.0$00.00%−10,200−100.0%Sold out