13F Insight
DOSSIER · 13F Holders · Q2 2026
ASTL

ALGOMA STL GROUP INC

103 institutions still hold ALGOMA STL GROUP INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 015658107·103 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$262M
visible holders
Holders
103
filers reporting
Concentration
26.02%
Maple Rock Capital Partners Inc. #1
top holder share
AI Holders Summary · Q2 2026

103 institutions reported ASTL in Q2 2026. Maple Rock Capital Partners Inc. leads at 26.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Maple Rock Capital Partners Inc.
CIK 0001658363
$68M16.9M1.34%Q2 202602
MMCAP International Inc. SPC
CIK 0001304857
$44M11.0M3.76%Q2 202603
DONALD SMITH & CO., INC.
CIK 0000814375
$21M5.3M0.38%Q2 202604
INVESCO SENIOR SECURED MANAGEMENT INC /ADV
CIK 0000870481
$18M3.2M44.65%Q4 202505
BlackRock, Inc.
CIK 0002012383
$17M4.1M0.00%Q2 202606
Scheer, Rowlett & Associates Investment Management Ltd.
CIK 0001426327
$16M3.8M1.13%Q2 202607
MORGAN STANLEY
CIK 0000895421
$12M3.0M0.00%Q2 202608
AEGIS FINANCIAL CORP
CIK 0001140753
$7M1.8M1.14%Q2 202609
CDC Financial, Inc.
CIK 0002077836
$7M1.8M3.03%Q2 202610
BRIGHTLINE CAPITAL MANAGEMENT, LLC
CIK 0001432450
$7M1.7M1.46%Q2 202611
LITTLEJOHN & CO LLC
CIK 0001042537
$6M1.5M7.83%Q2 202612
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$6M1.4M0.01%Q2 202613
Sourcerock Group LLC
CIK 0001822531
$5M1.2M0.26%Q2 202614
MACKENZIE FINANCIAL CORP
CIK 0000919859
$5M1.3M0.01%Q2 202615
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$4M1.0M0.00%Q2 202616
LM Asset (IM) Inc.
CIK 0002057190
$4M1.0M2.55%Q2 202617
Bracebridge Capital, LLC
CIK 0001426486
$4M925K0.07%Q2 202618
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$4M896K0.00%Q1 202619
JB CAPITAL PARTNERS LP
CIK 0001138532
$4M872K0.55%Q2 202620
CITADEL ADVISORS LLC
CIK 0001423053
$3M846K0.00%Q2 2026
Page 1 of 6
83 more holders available. Log in →