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Maple Rock Capital Partners Inc.

Position in ASTL — Algoma Steel Group Inc.

CIK 1658363 Toronto, A6

Position in ASTL

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$68,290,362
+$2,496,084 QoQ
Shares Held
16,861,818
+5.8% QoQ
Ownership
16.0%
of shares outstanding
% of Portfolio
1.34%
of 13F equity value
Holder Rank
#1
of 95 holders
Holding Since
Dec 2021
19 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASTL Over Time

Shares Held

Position Value (USD)

Position in Steel

Basic Materials · as of Jun 30, 2026

Maple Rock Capital Partners Inc. holds $365,943,295 across 4 Steel names. ASTL ranks #3 (18.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 ASTL
Algoma Steel Group Inc.
This page
16,861,818 $68,290,362

All Filings in ASTL

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $68,290,362 16,861,818
2026-03-31 $65,794,278 15,930,818
2026-03-31 $65,794,278 15,930,818
2025-12-31 $59,166,353 14,430,818
2025-10-31 $58,354,688 13,993,930
2025-09-30 $37,081,557 10,430,818
2025-08-28 $52,988,555 10,430,818
2025-08-12 $47,981,762 10,430,818
2025-06-30 $57,853,952 8,396,800
2025-05-01 $40,330,974 7,552,617
2025-03-31 $38,482,000 7,100,000
2024-12-31 $59,580,649 6,092,091
2024-09-30 $62,322,090 6,092,091
2024-06-30 $42,400,953 6,092,091
2024-03-31 $51,721,852 6,092,091
2023-12-31 $61,103,672 6,092,091
2023-09-30 $41,426,218 6,092,091
2023-06-30 $43,253,846 6,092,091
2023-03-31 $52,449,695 6,491,299
2022-12-31 $41,154,835 6,491,299
2022-09-30 $39,517,765 6,136,299
2022-06-30 $55,103,965 6,136,299
2022-03-31 $69,033,476 6,136,309
2021-12-31 $44,222,337 4,090,873