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Disclosery

ASTL ALGOMA STL GROUP INC

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COM (common), issuer CIK 1860805

95 managers (95 13F filers) reported a position in ASTL shares at 2026-06-30, 72,117,887 shares in all. 12 filers opened a position and 15 filers sold out during the quarter.

Managers
95
13F filers
95
New
12
Added
30
Reduced
36
Sold out
15
Shares held by filers
72,117,887

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Maple Rock Capital Partners Inc.16,861,818$68.3M1.34%+931,00013F-HRTimeline
MMCAP International Inc. SPCin group MMCAP10,954,738$44.4M3.76%-1,890,88413F-HRTimelineGroup
DONALD SMITH & CO., INC.in group DONALD SMITH & CO., INC.5,277,631$21.4M0.38%-751,29813F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,143,265$16.8M<0.01%+27,81213F-HRTimelineGroup
Scheer, Rowlett & Associates Investment…3,846,390$15.7M1.13%+638,91013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY2,958,350$12M<0.01%+1,474,63913F-HRTimelineGroup
AEGIS FINANCIAL CORP1,786,122$7.23M1.14%013F-HRTimeline
CDC Financial, Inc.1,745,647$7.07M5.43%+131,89813F-HRTimeline
BRIGHTLINE CAPITAL MANAGEMENT, LLC1,660,000$6.72M1.46%new13F-HRTimeline
LITTLEJOHN & CO LLC1,518,714$6.15M7.83%-1,927,78913F-HRTimeline
Connor, Clark & Lunn Investment Managem…1,387,320$5.65M0.01%-338,43813F-HRTimeline
Sourcerock Group LLC1,247,507$5.05M0.26%-58,89613F-HRTimeline
MACKENZIE FINANCIAL CORP1,329,806$4.96M<0.01%+1,231,03313F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,041,811$4.22M<0.01%+771,91113F-HRTimelineGroup
LM Asset Management Inc.1,016,000$4.11M2.85%-749,00013F-HRTimeline
Bracebridge Capital, LLC924,931$3.75M0.81%013F-HRTimeline
JB CAPITAL PARTNERS LP872,277$3.53M0.55%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC845,935$3.43M<0.01%+578,19213F-HRTimelineGroup
Bain Capital Credit, LPin group Bain Capital Life Sciences In…825,777$3.34M0.91%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO810,208$3.25M<0.01%+579,39113F-HRTimelineGroup
Ewing Morris & Co. Investment Partners …722,350$2.94M1.54%+12,35013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd682,493$2.78M0.02%-196,04713F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.670,373$2.72M<0.01%+399,82913F-HRTimelineGroup
TCW GROUP INCin group TCW GROUP INC607,478$2.46M0.02%-160,70013F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.575,225$2.33M<0.01%+501,30913F-HRTimelineGroup
TD Asset Management Inc498,279$2.03M<0.01%-343,62513F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP499,494$2.02M<0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC488,194$1.99M<0.01%+473,39413F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…471,288$1.91M<0.01%-100,27813F-HRTimelineGroup
READYSTATE ASSET MANAGEMENT LP463,228$1.88M0.08%013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co438,431$1.79M<0.01%-160,48813F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS418,754$1.7M<0.01%+353,33713F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC386,942$1.57M<0.01%-379,46913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP356,116$1.44M<0.01%-5,88013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC308,972$1.25M<0.01%+137,41613F-HRTimelineGroup
Voleon Capital Management LP307,297$1.24M0.02%+176,37813F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/288,488$1.17M<0.01%+15,87513F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC289,675$1.17M0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC264,994$1.07M<0.01%+12,53713F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA149,303$604K<0.01%+2,48213F-HRTimelineGroup
Quinn Opportunity Partners LLC142,336$576K0.03%013F-HRTimeline
SIMPLEX TRADING, LLC125,725$509K0.01%-29,18013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd122,662$497K0.01%-59,68513F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/116,242$471K<0.01%+53,84913F-HRTimelineGroup
Summit Financial, LLC110,333$447K<0.01%013F-HRTimeline
Quantbot Technologies LP109,199$442K0.02%-48,72913F-HRTimeline
ExodusPoint Capital Management, LP101,746$412K<0.01%-127,81713F-HRTimeline
SIG North Trading, ULC96,117$389K0.07%-75,70013F-HRTimeline
Boston Partnersin group Boston Trust Walden Corp88,825$360K<0.01%+1,75813F-HRTimelineGroup
PDT Partners, LLC73,079$296K0.02%+2,77513F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC71,194$288K0.01%+26,12413F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC67,859$275K<0.01%+4,04613F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP66,463$269K0.02%+11,48013F-HRTimeline
LPL Financial LLC56,526$229K<0.01%-3,26813F-HRTimeline
Terril Brothers, Inc.54,000$219K0.06%-4,00013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC53,267$214K<0.01%-1,11213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC52,687$213K<0.01%-842,87913F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC50,800$207K<0.01%+9,72413F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.42,054$170K<0.01%-17,09613F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC41,806$169K<0.01%-22,36813F-HRTimelineGroup
Campbell & CO Investment Adviser LLC41,049$166K0.01%new13F-HRTimeline
Phoenix Financial Ltd.in group Phoenix Financial Ltd.35,714$145K<0.01%013F-HRTimelineGroup
Lavaca Capital LLC35,573$144K0.02%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd35,549$144K<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC34,896$141K<0.01%-50,76013F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC31,881$129K0.01%new13F-HRTimeline
Claret Asset Management Corp30,375$123K0.01%013F-HRTimeline
NewEdge Advisors, LLC27,899$113K<0.01%-40013F-HRTimeline
Verition Fund Management LLC26,803$109K<0.01%013F-HR/ATimeline
Olympiad Research LP25,736$104K0.22%new13F-HRTimeline
CIBC WORLD MARKET INC.25,300$102K<0.01%-25113F-HRTimeline
FIL Ltdin group FIL Ltd22,908$93.4K<0.01%-8,05313F-HRTimelineGroup
Empirical Financial Services, LLC d.b.a…21,773$88.2K<0.01%013F-HRTimeline
Net Worth Advisory Group20,833$84.4K0.02%-1,55513F-HRTimeline
Federation des caisses Desjardins du Qu…18,360$73.8K<0.01%013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC11,223$45.5K<0.01%+41613F-HRTimeline
Aquatic Capital Management LLC11,173$45.3K<0.01%-36,08413F-HRTimeline
EJF Capital LP11,000$44.5K0.03%013F-HRTimeline
SG Americas Securities, LLC10,886$44K<0.01%new13F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK10,000$41K<0.01%-16,17813F-HRTimelineGroup
ELEMENT POINTE ADVISORS, LLC10,000$40.5K0.01%013F-HRTimeline
UBS Group AGin group UBS Group AG8,294$33.6K<0.01%-298,66313F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC6,849$27.9K<0.01%+3,61313F-HRTimelineGroup
TD Waterhouse Canada Inc.6,700$25.6K<0.01%+2,00013F-HRTimeline
Aviso Financial Inc.6,164$25.1K<0.01%+13113F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC2,500$10.1K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,682$6.81K<0.01%-113F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP878$3.67K<0.01%new13F-HRTimelineGroup
FNY Investment Advisers, LLC830$3K<0.01%-64,45813F-HRTimeline
Caitong International Asset Management …128$518<0.01%new13F-HRTimeline
Physician Wealth Advisors, Inc.111$450<0.01%new13F-HRTimeline
Arlington Trust Co LLCin group Arlington Trust Co LLC100$405<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…78$316<0.01%-3,77713F-HRTimelineGroup
Basepoint Wealth LLC51$208<0.01%013F-HRTimeline
SBI Securities Co., Ltd.50$203<0.01%-113F-HRTimeline