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Equibles

ASTL

Algoma Steel Group Inc.

Company with tickers: ASTL, ASTLW

CIK
1860805
CUSIP
015658107
Shares Outstanding
105,388,619
13F Activity (30d)
98 filings 94 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 99
Total Value: $303,654,067
Total Shares: 73,524,000
Showing 1–100 of 110 holdings by value · page 1 of 2

Institutional Ownership Trend

18 quarters

Holder Concentration

Across 99 13F filers · Δ vs Dec 31, 2025
Top Holder
21.7%
Jun 2023 → Mar 2026 · range 9.6% – 21.7%
+5.0 pts
Top 5
57.6%
Jun 2023 → Mar 2026 · range 35.5% – 57.6%
+7.0 pts
Top 10
71.5%
Jun 2023 → Mar 2026 · range 54.1% – 71.5%
+4.9 pts
HHI
964
Jun 2023 → Mar 2026 · range 417 – 964
Broadly held +259

Quarterly Activity

vs Dec 31, 2025
New
16
Increased
31
Decreased
33
Sold Out
26
Unchanged
19
Holder count: -10
Institutional value: -14.3%
Shares held: -14.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid Maple Rock Capital Partners Inc. +1,500,000 15,930,818
Small MMCAP International Inc. SPC +1,357,761 12,845,622
Mega MORGAN STANLEY +443,172 1,483,711
Small LM Asset Management Inc. +295,000 1,765,000
Large ExodusPoint Capital Management, LP +203,223 229,563

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega BlackRock, Inc. −4,386,450 4,115,453
Large Verition Fund Management LLC −1,221,999 26,803
Mega TD Asset Management Inc −845,516 841,904
Small CDC Financial, Inc. −754,600 1,753,749
Mega UBS Group AG −637,807 306,957

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid Sourcerock Group LLC 1,306,403 $5,395,444
Large HRT FINANCIAL LP 467,190 $1,929,494
Mega TWO SIGMA INVESTMENTS, LP 269,900 $1,114,687
Mega JPMORGAN CHASE & CO 230,817 $953,274
Mid Purpose Unlimited Inc. 200,000 $826,000

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Micro INVESCO SENIOR SECURED MANAGEMENT INC /ADV 3,233,117 $13,255,779
Mid GOLDENTREE ASSET MANAGEMENT LP 2,493,548 $10,223,546
Mega FMR LLC 2,208,646 $9,055,448
Large Walleye Capital LLC 635,534 $2,605,689
Small Orion Resource Partners LP 381,728 $1,565,084
Filter: New 16 Increased 31 Reduced 33 Sold out 26 Unchanged 19
Showing 100 of 110
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mid Maple Rock Capital Partners Inc. $65,794,278 21.67% 15,930,818
Small MMCAP International Inc. SPC $53,052,418 17.47% 12,845,622
Mid DONALD SMITH & CO., INC. $24,899,476 8.20% 6,028,929
Mega BlackRock, Inc. $16,996,818 5.60% 4,115,453
Small LITTLEJOHN & CO LLC $14,234,057 4.69% 3,446,503
Mid Scheer, Rowlett & Associates Investment Management Ltd. $13,246,892 4.36% 3,207,480
Small AEGIS FINANCIAL CORP $7,376,683 2.43% 1,786,122
Small LM Asset Management Inc. $7,289,450 2.40% 1,765,000
Large Connor, Clark & Lunn Investment Management Ltd. $7,127,380 2.35% 1,725,758
Small CDC Financial, Inc. $6,664,783 2.19% 1,613,749
Mega MORGAN STANLEY $6,127,724 2.02% 1,483,711
Mid Sourcerock Group LLC $5,395,444 1.78% 1,306,403
Small Solas Capital Management, LLC $4,325,985 1.42% 1,047,454
Small Bracebridge Capital, LLC $3,819,965 1.26% 924,931
Mega JANE STREET GROUP, LLC $3,698,687 1.22% 895,566
Mid Quadrature Capital Ltd $3,628,370 1.19% 878,540
Small JB CAPITAL PARTNERS LP $3,602,504 1.19% 872,277
Mega TD Asset Management Inc $3,477,063 1.15% 841,904
Small Bain Capital Credit, LP $3,410,459 1.12% 825,777
Large TCW GROUP INC $3,172,575 1.04% 768,178
Mega MILLENNIUM MANAGEMENT LLC $3,165,277 1.04% 766,411
Small Ewing Morris & Co. Investment Partners Ltd. $2,932,300 0.97% 710,000
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $2,473,535 0.81% 598,919
Large Russell Investments Group, Ltd. $2,360,565 0.78% 571,566
Large HRT FINANCIAL LP $1,929,494 0.64% 467,190
Mid READYSTATE ASSET MANAGEMENT LP $1,913,131 0.63% 463,228
Mega DIMENSIONAL FUND ADVISORS LP $1,495,042 0.49% 361,996
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,425,676 0.47% 345,200
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,292,277 0.43% 312,900
Mega UBS Group AG $1,267,732 0.42% 306,957
Mega BANK OF MONTREAL /CAN/ Bank $1,125,891 0.37% 272,613
Mega D. E. Shaw & Co., Inc. $1,117,346 0.37% 270,544
Mega TWO SIGMA INVESTMENTS, LP $1,114,687 0.37% 269,900
Mega CITADEL ADVISORS LLC $1,105,777 0.36% 267,743
Mega GOLDMAN SACHS GROUP INC $1,042,647 0.34% 252,457
Mid CenterBook Partners LP $964,392 0.32% 233,509
Mega JPMORGAN CHASE & CO $953,274 0.31% 230,817
Large ExodusPoint Capital Management, LP $948,095 0.31% 229,563
Mid SIG North Trading, ULC $880,929 0.29% 213,300
Mid Purpose Unlimited Inc. $826,000 0.27% 200,000
Mid XTX Topco Ltd $753,093 0.25% 182,347
Mid SIG North Trading, ULC $709,604 0.23% 171,817
Mega BARCLAYS PLC $708,525 0.23% 171,556
Mid Quantbot Technologies LP $652,242 0.21% 157,928
Mid SIMPLEX TRADING, LLC $639,757 0.21% 154,905
Mega ROYAL BANK OF CANADA Bank $606,370 0.20% 146,821
Mid Quinn Opportunity Partners LLC $587,847 0.19% 142,336
Small CDC Financial, Inc. $578,200 0.19% 140,000
Large Caption Management, LLC $557,550 0.18% 135,000
Mid Voleon Capital Management LP $540,695 0.18% 130,919
Large RENAISSANCE TECHNOLOGIES LLC $484,349 0.16% 117,276
Mid Summit Financial, LLC $455,675 0.15% 110,333
Large Assenagon Asset Management S.A. $409,311 0.13% 99,107
Large MACKENZIE FINANCIAL CORP $407,932 0.13% 98,773
Small AYAL Capital Advisors Ltd $392,350 0.13% 95,000
Mid ARISTEIA CAPITAL, L.L.C. $377,576 0.12% 91,423
Large Boston Partners $359,586 0.12% 87,067
Mid GROUP ONE TRADING LLC $353,759 0.12% 85,656
Mid SIG North Trading, ULC $350,224 0.12% 84,800
Large Point72 Asset Management, L.P. $305,273 0.10% 73,916
Mid PDT Partners, LLC $290,355 0.10% 70,304
Mega BNP PARIBAS ARBITRAGE, SA $270,172 0.09% 65,417
Small FNY Investment Advisers, LLC $269,639 0.09% 65,288
Large Squarepoint Ops LLC $265,038 0.09% 64,174
Mega GEODE CAPITAL MANAGEMENT, LLC $263,547 0.09% 63,813
Mega BANK OF AMERICA CORP /DE/ Bank $257,682 0.08% 62,393
Mega LPL Financial LLC $246,949 0.08% 59,794
Mega Invesco Ltd. $244,289 0.08% 59,150
Small Terril Brothers, Inc. $239,540 0.08% 58,000
Mid GSA CAPITAL PARTNERS LLP $227,079 0.07% 54,983
Mega HSBC HOLDINGS PLC $224,585 0.07% 54,379
Mega CITADEL ADVISORS LLC $205,261 0.07% 49,700
Mid Aquatic Capital Management LLC $195,171 0.06% 47,257
Mid BOOTHBAY FUND MANAGEMENT, LLC $186,139 0.06% 45,070
Mega AMERICAN CENTURY COMPANIES INC $169,643 0.06% 41,076
Mega CITADEL ADVISORS LLC $159,831 0.05% 38,700
Mid Phoenix Financial Ltd. $147,498 0.05% 35,714
Small TWO SIGMA SECURITIES, LLC Broker-Dealer $146,065 0.05% 35,367
Mega FIL Ltd $127,868 0.04% 30,961
Small Claret Asset Management Corp $125,448 0.04% 30,375
Mid NewEdge Advisors, LLC $116,874 0.04% 28,299
Large Verition Fund Management LLC $110,696 0.04% 26,803
Large TORONTO DOMINION BANK Bank $108,115 0.04% 26,178
Large CIBC WORLD MARKET INC. $105,525 0.03% 25,551
Small Net Worth Advisory Group $92,462 0.03% 22,388
Mid Empirical Financial Services, LLC d.b.a. Empirical Wealth Management $89,922 0.03% 21,773
Mega D. E. Shaw & Co., Inc. $79,296 0.03% 19,200
Large Federation des caisses Desjardins du Quebec $75,826 0.02% 18,360
Large Caption Management, LLC $71,444 0.02% 17,299
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $63,560 0.02% 15,390
Large Corient Private Wealth LLC $61,950 0.02% 15,000
Large ACADIAN ASSET MANAGEMENT LLC $61,124 0.02% 14,800
Small Scientech Research LLC $56,779 0.02% 13,748
Large Schonfeld Strategic Advisors LLC $54,466 0.02% 13,188
Large Balyasny Asset Management L.P. $47,565 0.02% 11,517
Small EJF Capital LP $45,430 0.01% 11,000
Mega VICTORY CAPITAL MANAGEMENT INC $44,632 0.01% 10,807
Large TORONTO DOMINION BANK Bank $41,300 0.01% 10,000
Small ELEMENT POINTE ADVISORS, LLC $41,300 0.01% 10,000
Mid Aviso Financial Inc. $24,916 0.01% 6,033

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