Latest Period
Q1 2026
Security Snapshot
Algoma Steel Group Inc. - Common Shares, no par value (ASTL) Institutional Ownership
CUSIP: 015658107
13F Institutional Holders and Ownership History from Q4 2021 to Q1 2026
Institutions Reporting
98
Shares (Excl. Options)
71,969,593
Price
$4.13
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- Security type / class
- Equity / Common Shares, no par value
- Symbol
- ASTL on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 71,969,593
- Total 13F value
- $297,121,949
- Portfolio coverage rank
- 0%
- Share change
- -7,864,810
- Value change
- -$32,315,604
- Number of holders
- 98
- Shares outstanding
- 105,502,106
- SEC-reported price per share
- $5.33
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ASTL - Algoma Steel Group Inc. - Common Shares, no par value is tracked under CUSIP 015658107.
- 98 institutions reported positions in Q1 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 109 to 98 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $346,027,150 to $297,121,949.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 98 institutions filings for Q1 2026.
Security key
015658107
Latest holder period
Q1 2026
13F holders
98
13D/G owners
6
CIK / CUSIP context first
Open Q1 2026 holders
ASTL full holder history
Algoma Steel Group Inc. SEC filings
Algoma Steel Group Inc. company facts
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 015658107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
ASTL
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Maple Rock Capital Partners Inc. | 15% | +14% | $75,034,153 | +$9,122,742 | 15,930,818 | +14% | Maple Rock Capital Partners Inc. | 31 Mar 2026 |
| MMCAP International Inc. SPC | 12% | +12% | $60,502,880 | +$6,395,054 | 12,845,622 | +12% | MMCAP International Inc. SPC | 31 Mar 2026 |
| DONALD SMITH & CO., INC. | 5.8% | +3.3% | $28,396,256 | +$787,974 | 6,028,929 | +2.9% | DONALD SMITH & CO., INC. | 31 Mar 2026 |
| Stoney Lonesome HF LP | 5.4% | +4% | $40,931,069 | +$2,830,397 | 5,864,050 | +7.4% | COGHILL CLINT D | 30 Jun 2025 |
| BlackRock, Inc. | 3.7% | $19,448,211 | 3,835,939 | BlackRock, Inc. | 31 Mar 2025 | |||
| Zekelman Industries, Inc. | 3.1% | $16,408,390 | 3,229,998 | Zekelman Industries, Inc. | 10 Sep 2025 |
As of 31 Mar 2026, 98 institutional investors reported holding 71,969,593 shares of Algoma Steel Group Inc. - Common Shares, no par value (ASTL). This represents 68% of the company’s total 105,502,106 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
62%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Maple Rock Capital Partners Inc. | 15% | 15,930,818 | +10% | 2.1% | $65,794,278 |
| MMCAP International Inc. SPC | 12% | 12,845,622 | +12% | 4.6% | $53,052,419 |
| DONALD SMITH & CO., INC. | 5.7% | 6,028,929 | +2.9% | 0.45% | $24,899,477 |
| BlackRock, Inc. | 3.9% | 4,115,453 | -52% | 0% | $16,996,819 |
| LITTLEJOHN & CO LLC | 3.3% | 3,446,503 | 0% | 13% | $14,234,057 |
| Scheer, Rowlett & Associates Investment Management Ltd. | 3% | 3,207,480 | -3.9% | 0.95% | $13,237,325 |
| AEGIS FINANCIAL CORP | 1.7% | 1,786,122 | 0% | 1.3% | $7,376,684 |
| LM Asset Management Inc. | 1.7% | 1,765,000 | +20% | 4.4% | $7,289,450 |
| Connor, Clark & Lunn Investment Management Ltd. | 1.6% | 1,725,758 | -24% | 0.02% | $7,122,233 |
| CDC Financial, Inc. | 1.5% | 1,613,749 | +2.1% | 5.5% | $6,664,783 |
| MORGAN STANLEY | 1.4% | 1,483,711 | +43% | 0% | $6,127,726 |
| Sourcerock Group LLC | 1.2% | 1,306,403 | 0.23% | $5,395,444 | |
| Solas Capital Management, LLC | 0.99% | 1,047,454 | -2% | 2.5% | $4,325,985 |
| Bracebridge Capital, LLC | 0.88% | 924,931 | 0% | 0.69% | $3,819,965 |
| JANE STREET GROUP, LLC | 0.85% | 895,566 | +28% | 0% | $3,698,688 |
| Quadrature Capital Ltd | 0.83% | 878,540 | -14% | 0.04% | $3,614,079 |
| JB CAPITAL PARTNERS LP | 0.83% | 872,277 | 0% | 0.62% | $3,602,504 |
| TD Asset Management Inc | 0.8% | 841,904 | -50% | 0% | $3,462,813 |
| Bain Capital Credit, LP | 0.78% | 825,777 | 0% | 1.1% | $3,410,460 |
| TCW GROUP INC | 0.73% | 768,178 | +14% | 0.02% | $3,172,575 |
| MILLENNIUM MANAGEMENT LLC | 0.73% | 766,411 | +28% | 0% | $3,165,277 |
| Ewing Morris & Co. Investment Partners Ltd. | 0.67% | 710,000 | +16% | 1.3% | $2,920,282 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.57% | 598,919 | -15% | 0% | $2,463,398 |
| Russell Investments Group, Ltd. | 0.54% | 571,566 | +42% | 0% | $2,360,565 |
| HRT FINANCIAL LP | 0.44% | 467,190 | 0% | $1,929,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
18
Latest
Q1 2026
Rows shown
1-18 of 18
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 71,969,593 | $297,121,949 | -$32,315,604 | $4.13 | 98 |
| 2025 Q4 | 83,116,370 | $346,027,150 | +$24,898,340 | $4.10 | 109 |
| 2025 Q3 | 77,189,775 | $274,608,877 | -$41,161,786 | $3.56 | 117 |
| 2025 Q2 | 80,222,845 | $552,932,141 | +$28,189,160 | $6.89 | 127 |
| 2025 Q1 | 76,933,946 | $425,534,483 | -$41,916,215 | $5.42 | 127 |
| 2024 Q4 | 81,408,306 | $795,639,115 | +$29,934,614 | $9.78 | 133 |
| 2024 Q3 | 78,026,072 | $792,790,621 | +$47,267,482 | $10.23 | 130 |
| 2024 Q2 | 66,421,432 | $462,499,892 | +$51,520 | $6.96 | 113 |
| 2024 Q1 | 71,265,694 | $605,209,689 | -$11,238,461 | $8.49 | 107 |
| 2023 Q4 | 71,001,366 | $711,858,801 | +$37,356,496 | $10.03 | 117 |
| 2023 Q3 | 67,776,758 | $461,292,458 | +$7,217,061 | $6.80 | 110 |
| 2023 Q2 | 66,653,892 | $473,489,132 | +$2,579,821 | $7.10 | 115 |
| 2023 Q1 | 65,822,650 | $531,356,630 | -$41,558,093 | $8.08 | 113 |
| 2022 Q4 | 73,604,822 | $466,805,686 | -$709,654 | $6.34 | 117 |
| 2022 Q3 | 65,858,710 | $424,329,314 | -$258,000,949 | $6.44 | 113 |
| 2022 Q2 | 102,793,506 | $923,119,126 | +$70,810,807 | $8.98 | 118 |
| 2022 Q1 | 93,770,075 | $1,052,191,915 | +$347,349,077 | $11.25 | 87 |
| 2021 Q4 | 61,661,759 | $642,288,728 | +$642,256,728 | $10.81 | 67 |