Algoma Steel Group Inc.
US ˙ NasdaqGM ˙ CA0156581070

SecurityASTL / Algoma Steel Group Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership361,996 shares
Latest Disclosed Value $ 1,493,995
Dimensional Fund Advisors Lp reports 5.63% decrease in ownership of ASTL / Algoma Steel Group Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 361,996 shares of Algoma Steel Group Inc. (US:ASTL) valued at $1,495,043 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 383,587 shares of Algoma Steel Group Inc.. This represents a change in shares of -5.63% during the quarter. The current value of the position is $2,001,838 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ALGOMA STL GROUP COM 015658107 361,996 -21,591 -5.63 1,494 -5.03 0.0001
2026-02-12 2025-12-31 13F ALGOMA STL GROUP COM 015658107 383,587 -116,487 -23.29 1,573 -11.73 0.0003
2025-11-12 2025-09-30 13F ALGOMA STL GROUP COM 015658107 500,074 68,349 15.83 1,781 -40.09 0.0004
2025-08-12 2025-06-30 13F ALGOMA STL GROUP COM 015658107 431,725 -44,042 -9.26 2,973 15.23 0.0007
2025-05-13 2025-03-31 13F ALGOMA STL GROUP COM 015658107 475,767 35,407 8.04 2,580 -40.08 0.0006
2025-02-13 2024-12-31 13F ALGOMA STL GROUP COM 015658107 440,360 169,765 62.74 4,306 55.56 0.0010
2024-11-07 2024-09-30 13F ALGOMA STL GROUP COM 015658107 270,595 135,626 100.49 2,769 194.78 0.0007
2024-08-09 2024-06-30 13F ALGOMA STL GROUP COM 015658107 134,969 134,969 939 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.