Algoma Steel GroupASTL
13F holders, Q4 2025 (December 31)109holders −9
23new positions
30sold out
3famous investors
$4.16avg. 13F price*
At the end of Q4 2025, 109 institutions reported holding Algoma Steel Group Inc. (ASTL) in their 13F filings, down 9 from Q3 2025. 23 opened new positions and 30 sold out. The largest holders were Maple Rock Capital Partners Inc. ($59.2M), MMCAP International Inc. SPC ($47.1M) and BlackRock, Inc. ($34.9M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Algoma Steel Group Inc.
- CUSIP
- 015658107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 23 | $17.7M |
| Exits | 30 | $34.4M |
All 13F filers, Q3 2025 → Q4 2025: 17,727,759 shares bought and 12,912,518 shares sold, net +4,815,241 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 109 holders
| Maple Rock Capital Partners Inc. | 1.95% | Add +38.4% | 14,430,818 | $59.2M |
| MMCAP International Inc. SPC | 4.79% | Add +42.2% | 11,487,861 | $47.1M |
| BlackRock, Inc. | 0.00% | Add +15.9% | 8,501,903 | $34.9M |
| Donald Smith & Co., Inc. | 0.45% | Reduce -1.3% | 5,861,631 | $24.0M |
| Invesco Senior Secured Management Inc. | 44.65% | No change | 3,233,117 | $18.3M |
| Littlejohn & Co. LLC | 7.36% | Add +27.9% | 3,446,503 | $14.1M |
| Scheer, Rowlett & Associates Investment Management Ltd. | 0.94% | Reduce -12.9% | 3,336,525 | $13.7M |
| Goldentree Asset Management LP | 0.56% | No change | 2,493,548 | $10.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | New | 2,264,863 | $9.3M |
| FMR LLC | 0.00% | Reduce -0.3% | 2,208,646 | $9.1M |
| Aegis Financial Corp. | 1.75% | No change | 1,786,122 | $7.3M |
| TD Asset Management Inc | 0.01% | Add +1351.7% | 1,687,420 | $7.0M |
| CDC Financial, Inc. | 5.99% | — | 1,580,749 | $6.5M |
| LM Asset Management Inc. | 4.82% | Add +27.8% | 1,470,000 | $6.0M |
| Verition Fund Management LLC | 0.03% | New | 1,248,802 | $5.1M |
| Solas Capital Management, LLC | 2.49% | Reduce -2.0% | 1,069,351 | $4.4M |
| Morgan Stanley | 0.00% | Reduce -19.5% | 1,040,539 | $4.3M |
| Quadrature Capital Ltd | 0.04% | Reduce -33.4% | 1,018,100 | $4.2M |
| UBS Group AG | 0.00% | Add +64.7% | 944,764 | $3.9M |
| Bracebridge Capital, LLC | 1.41% | No change | 924,931 | $3.8M |
| JB Capital Partners LP | 0.62% | Reduce -12.1% | 872,277 | $3.6M |
| Bain Capital Credit, LP | 0.89% | Reduce -1.4% | 825,777 | $3.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +37.8% | 702,734 | $2.9M |
| Jane Street Group, LLC | 0.00% | Reduce -15.2% | 701,942 | $2.9M |
| TCW Group Inc. | 0.02% | No change | 672,678 | $2.8M |
| Readystate Asset Management LP | 0.20% | No change | 640,324 | $2.6M |
| Ewing Morris & Co. Investment Partners Ltd. | 1.12% | Add +25.0% | 612,500 | $2.6M |
| Citadel Advisors | 0.00% | Add +6.5% | 622,404 | $2.6M |
| Millennium Management | 0.00% | Reduce -15.3% | 596,960 | $2.5M |
| Walleye Capital LLC | 0.01% | Add +92.6% | 537,234 | $2.2M |
| D. E. Shaw & Co. | 0.00% | Reduce -9.5% | 523,258 | $2.1M |
| Bank of America Corp. | 0.00% | Add +92.0% | 522,357 | $2.1M |
| Russell Investments Group, Ltd. | 0.00% | Add +5.5% | 401,490 | $1.6M |
| CenterBook Partners LP | 0.08% | Add +70.2% | 398,845 | $1.6M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -23.3% | 383,587 | $1.6M |
| Orion Resource Partners LP | 0.77% | Add +173.8% | 381,728 | $1.6M |
| Prescott Group Capital Management, L.L.C. | 0.09% | New | 231,219 | $948K |
| Bank of Montreal | 0.00% | Add +7.3% | 203,916 | $839K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -27.9% | 155,250 | $637K |
| Royal Bank of Canada | 0.00% | Reduce -72.7% | 145,596 | $597K |
| XTX Topco Ltd | 0.02% | Add +15.8% | 143,704 | $589K |
| Quinn Opportunity Partners LLC | 0.03% | No change | 142,336 | $584K |
| Quantbot Technologies LP | 0.02% | Reduce -32.2% | 127,847 | $524K |
| Aristeia Capital, L.L.C. | 0.02% | New | 120,260 | $493K |
| BNP Paribas Financial Markets | 0.00% | Add +0.1% | 114,101 | $468K |
| Summit Financial, LLC | 0.01% | No change | 110,333 | $452K |
| Group One Trading LLC | 0.01% | Add +248.3% | 103,187 | $423K |
| SIG North Trading, ULC | 0.07% | Reduce -28.2% | 101,917 | $418K |
| Mackenzie Financial Corp. | 0.00% | Add +74.3% | 94,776 | $384K |
| FNY Investment Advisers, LLC | 0.10% | Add +1798.3% | 85,993 | $352K |
| Senvest Management, LLC | 0.01% | Reduce -68.8% | 85,789 | $352K |
| Nomura Holdings Inc. | 0.00% | Add +83.8% | 84,567 | $347K |
| PDT Partners, LLC | 0.02% | Add +31.4% | 78,804 | $323K |
| Lighthouse Investment Partners, LLC | 0.01% | Add +242.7% | 75,708 | $310K |
| Simplex Trading, LLC | 0.01% | New | 74,128 | $304K |
| Two Sigma Advisers, LP | 0.00% | New | 73,600 | $302K |
| Wolverine Asset Management LLC | 0.02% | Add +31.7% | 72,143 | $296K |
| American Century Companies Inc. | 0.00% | Add +79.1% | 69,172 | $285K |
| Boston Partners | 0.00% | Add +28.4% | 68,598 | $281K |
| Invesco Ltd. | 0.00% | Add +27.6% | 66,713 | $274K |
| Susquehanna International Group, LLP | 0.00% | Reduce -56.3% | 64,380 | $264K |
| Geode Capital Management, LLC | 0.00% | No change | 63,813 | $262K |
| LPL Financial LLC | 0.00% | Add +5.6% | 62,194 | $255K |
| Terril Brothers, Inc. | 0.06% | Add +39.8% | 58,000 | $238K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | No change | 55,000 | $228K |
| PenderFund Capital Management Ltd. | 0.08% | New | 50,000 | $206K |
| Barclays PLC | 0.00% | Add +12432.8% | 46,246 | $190K |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 21,188 | $180K |
| Gsa Capital Partners LLP | 0.01% | New | 42,489 | $174K |
| Voleon Capital Management LP | 0.00% | New | 40,086 | $164K |
| HSBC Holdings PLC | 0.00% | Add +243.7% | 38,754 | $159K |
| Phoenix Financial Ltd. | 0.00% | No change | 35,714 | $146K |
| Legal & General Group Plc | 0.00% | Reduce -62.4% | 33,330 | $137K |
| PharVision Advisers, LLC | 0.07% | New | 32,839 | $135K |
| Cibc World Market Inc. | 0.00% | Reduce -51.1% | 32,425 | $133K |
| Claret Asset Management Corp | 0.01% | No change | 30,375 | $125K |
| NewEdge Advisors, LLC | 0.00% | No change | 28,299 | $116K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -72.6% | 26,340 | $108K |
| Clear Harbor Asset Management, LLC | 0.01% | New | 26,000 | $107K |
| Net Worth Advisory Group | 0.02% | Reduce -3.1% | 23,643 | $97K |
| Allianz Asset Management GmbH | 0.00% | New | 21,822 | $90K |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 0.00% | No change | 21,773 | $89K |
| FIL Ltd | 0.00% | New | 20,570 | $85K |
| Acadian Asset Management LLC | 0.00% | Reduce -69.1% | 19,400 | $79K |
| Federation des caisses Desjardins du Quebec | 0.00% | Add +101.6% | 17,860 | $73K |
| National Bank of Canada | 0.00% | Add +65.2% | 17,575 | $72K |
| Walleye Trading LLC | 0.00% | New | 16,374 | $67K |
| Corient Private Wealth LP | 0.00% | No change | 15,000 | $62K |
| Jump Financial, LLC | 0.00% | Reduce -96.0% | 14,201 | $58K |
| Victory Capital Management Inc. | 0.00% | Add +2.1% | 11,079 | $45K |
| EJF Capital LP | 0.03% | No change | 11,000 | $45K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 10,798 | $44K |
| Two Sigma Securities, LLC | 0.01% | New | 10,274 | $42K |
| Toronto Dominion Bank | 0.00% | Add +0.6% | 10,060 | $41K |
| Element Pointe Advisors, LLC | 0.01% | New | 10,000 | $41K |
| Aquatic Capital Management LLC | 0.00% | New | 8,809 | $36K |
| Caption Management, LLC | 0.00% | New | 7,456 | $31K |
| Citigroup Inc. | 0.00% | Add +109.5% | 7,120 | $29K |
| Aviso Financial Inc. | 0.00% | Reduce -1.4% | 6,559 | $27K |
| Quarry LP | 0.00% | New | 2,426 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +221.5% | 2,337 | $10K |
| Ulland Investment Advisors, LLC | 0.00% | No change | 1,000 | $4K |
| PNC Financial Services Group, Inc. | 0.00% | New | 243 | $996 |
| Osaic Holdings, Inc. | 0.00% | No change | 167 | $684 |
| Caitong International Asset Management Co., Ltd | 0.00% | Reduce -97.1% | 166 | $681 |
| SBI Securities Co., Ltd. | 0.00% | Add +94.2% | 101 | $414 |
| Arlington Trust Co LLC | 0.00% | No change | 100 | $410 |
| Basepoint Wealth LLC | 0.00% | New | 51 | $210 |
| Larson Financial Group LLC | 0.00% | New | 11 | $45 |
"% of holder's portfolio" is ASTL's weight in each manager's 13F, not the share of Algoma Steel Group Inc. the manager owns.