Vault-13

ALGOMA STL GROUP INC ASTL

COM · Common Stock · CUSIP 015658107 · ISIN CA0156581070

128 institutional holders -4 vs Q1 2025
80,274,03780.3m shares reported held*
$553.3mreported value*
26 new 33 added 38 reduced 29 sold out net bought ≈ $20.5m (+3.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($424.2k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $6.89. Options: 15 managers hold calls ($31.8m notional), 14 hold puts ($7.1m).

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 114Q4 22: 120Q1 23: 117Q2 23: 118Q3 23: 112Q4 23: 121Q1 24: 109Q2 24: 119Q3 24: 134Q4 24: 136Q1 25: 132Q2 25: 128128Q3 22Q2 23Q1 24Q4 24Q2 25
Numbers
QuarterHolders
Q3 2022114
Q4 2022120
Q1 2023117
Q2 2023118
Q3 2023112
Q4 2023121
Q1 2024109
Q2 2024119
Q3 2024134
Q4 2024136
Q1 2025132
Q2 2025128

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 23: 44 bought or addedQ3 23: 57 cut or sold outQ4 23: 59 bought or addedQ4 23: 51 cut or sold outQ4 23Q1 24: 41 bought or addedQ1 24: 63 cut or sold outQ2 24: 52 bought or addedQ2 24: 46 cut or sold outQ2 24Q3 24: 63 bought or addedQ3 24: 56 cut or sold outQ4 24: 62 bought or addedQ4 24: 56 cut or sold outQ4 24Q1 25: 62 bought or addedQ1 25: 62 cut or sold outQ2 25: 59 bought or addedQ2 25: 67 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q3 20234457
Q4 20235951
Q1 20244163
Q2 20245246
Q3 20246356
Q4 20246256
Q1 20256262
Q2 20255967

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10m$20m$30m$40mQ3 24 calls: $22.9mQ3 24 puts: $7.3mQ3 24P/C 0.32Q4 24 calls: $23.4mQ4 24 puts: $4.7mQ4 24P/C 0.20Q1 25 calls: $5.4mQ1 25 puts: $4.9mQ1 25P/C 0.90Q2 25 calls: $31.8mQ2 25 puts: $7.1mQ2 25P/C 0.22
Numbers
QuarterCallsPutsP/C
Q3 2024$22.9m$7.3m0.32
Q4 2024$23.4m$4.7m0.20
Q1 2025$5.4m$4.9m0.90
Q2 2025$31.8m$7.1m0.22

Biggest buyers

Connor, Clark & Lunn Investment Management Ltd. New +1,570,953+1.6m
Maple Rock Capital Partners Inc. Added +1,296,800+1.3m
TD Asset Management Inc Added +1,195,416+1.2m
Amitell Capital Pte Ltd New +1,080,042+1.1m
Scheer, Rowlett & Associates Investment Management Ltd. Added +989,633+989.6k
BlackRock, Inc. Added +589,482+589.5k
MMCAP International Inc. SPC Added +576,801+576.8k
READYSTATE ASSET MANAGEMENT LP New +565,225+565.2k
INTACT INVESTMENT MANAGEMENT INC. Added +543,245+543.2k
Empyrean Capital Partners, LP New +452,148+452.1k

Biggest sellers

DONALD SMITH & CO., INC. Reduced -2,047,952-2.0m
Woodline Partners LP Sold out -1,240,894-1.2m
Thomist Capital Management, LP Sold out -737,877-737.9k
MILLENNIUM MANAGEMENT LLC Reduced -668,141-668.1k
FMR LLC Reduced -642,800-642.8k
Walleye Capital LLC Sold out -476,516-476.5k
Cubist Systematic Strategies, LLC Sold out -436,232-436.2k
BANK OF AMERICA CORP /DE/ Reduced -407,288-407.3k
TOWLE & CO Reduced -338,504-338.5k
JPMORGAN CHASE & CO Reduced -323,362-323.4k

Biggest calls

AYAL Capital Advisors Ltd New $14.1m2.0m shares
Caption Management, LLC Added $7.2m1.0m shares
JANE STREET GROUP, LLC Added $3.5m504.5k shares
CITADEL ADVISORS LLC Added $2.1m307.6k shares
GROUP ONE TRADING LLC Added $976.3k141.7k shares
SIMPLEX TRADING, LLC Added $773.0k112.2k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $688.3k99.9k shares
IMC-Chicago, LLC New $678.7k98.5k shares
Walleye Capital LLC Added $556.7k80.8k shares
Thomist Capital Management, LP New $535.0k100.0k shares

Biggest puts

CITADEL ADVISORS LLC Reduced $1.6m232.4k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $939.8k136.4k shares
WOLVERINE ASSET MANAGEMENT LLC Unchanged $727.6k105.6k shares
SIMPLEX TRADING, LLC Added $696.0k101.1k shares
IMC-Chicago, LLC New $569.1k82.6k shares
MILLENNIUM MANAGEMENT LLC New $542.2k78.7k shares
Walleye Capital LLC Added $504.3k73.2k shares
PEAK6 LLC Added $390.0k56.6k shares
Squarepoint Ops LLC Reduced $350.7k50.9k shares
GROUP ONE TRADING LLC Added $246.7k35.8k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Maple Rock Capital Partners Inc. 13G · institution +1.8 pts · filed 2026-05-15 15.1% +1.8 pts 15.9m≈ $64.5m 2026-05-15
MMCAP International Inc. SPC 13G · passive investor -1.8 pts · filed 2026-08-14 10.4% -1.8 pts 11.0m≈ $44.4m 2026-08-14
Stoney Lonesome HF LP 13G · passive investor +0.2 pts · filed 2025-08-14 5.4% +0.2 pts 5.9m≈ $23.7m 2025-08-14
DONALD SMITH & CO., INC. 13G · institution -0.8 pts · filed 2026-08-11 5.0% -0.8 pts 5.3m≈ $21.4m 2026-08-11

Insider purchases and sales in Q2 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Maple Rock Capital Partners Inc. 2.89% of their portfolio Toronto, A6 8,396,8008.4m $57.9m $57.9m 2.89% Added +1.3m +1,296,800
2 MMCAP International Inc. SPC 5.98% of their portfolio GRAND CAYMAN, E9 7,218,2187.2m $49.7m $49.7m 5.98% Added +576.8k +576,801
3 BlackRock, Inc. 0.00% of their portfolio New York, NY 6,385,0436.4m $44.0m $44.0m 0.00% Added +589.5k +589,482
4 DONALD SMITH & CO., INC. 0.98% of their portfolio NEW YORK, NY 6,040,1686.0m $41.6m $41.6m 0.98% Reduced -2.0m -2,047,952
5 FMR LLC 0.00% of their portfolio BOSTON, MA 3,952,8464.0m $27.2m $27.2m 0.00% Reduced -642.8k -642,800
6 Scheer, Rowlett & Associates Investment Management Ltd. 1.75% of their portfolio TORONTO, A6 3,898,2053.9m $27.0m $27.0m 1.75% Added +989.6k +989,633
7 CONTRARIAN CAPITAL MANAGEMENT, L.L.C. 7.04% of their portfolio Greenwich, CT 3,572,0183.6m $24.6m $24.6m 7.04% Unchanged
8 INVESCO SENIOR SECURED MANAGEMENT INC /ADV 31.34% of their portfolio NEW YORK, NY 3,233,1173.2m $22.3m $22.3m 31.34% Unchanged
9 GOLDENTREE ASSET MANAGEMENT LP 1.66% of their portfolio NEW YORK, NY 2,493,5482.5m $17.2m $17.2m 1.66% Unchanged
10 LITTLEJOHN & CO LLC 7.45% of their portfolio GREENWICH, CT 2,273,9722.3m $15.7m $15.7m 7.45% Added +71.3k +71,277
11 J. Goldman & Co LP 0.48% of their portfolio NEW YORK, NY 2,236,3732.2m $15.4m $15.4m 0.48% Added +372.2k +372,196
12 INTACT INVESTMENT MANAGEMENT INC. 0.47% of their portfolio MONTREAL, A8 2,007,0062.0m $13.9m $13.9m 0.47% Added +543.2k +543,245
13 AEGIS FINANCIAL CORP 7.24% of their portfolio MC LEAN, VA 1,786,1221.8m $12.3m $12.3m 7.24% Added +326.2k +326,219
14 Connor, Clark & Lunn Investment Management Ltd. 0.04% of their portfolio VANCOUVER, A1 1,570,9531.6m $10.9m $10.9m 0.04% New
15 TOWLE & CO 2.37% of their portfolio DENVER, CO 1,463,1611.5m $10.1m $10.1m 2.37% Reduced -338.5k -338,504
16 Solas Capital Management, LLC 5.52% of their portfolio DARIEN, CT 1,431,9361.4m $9.9m $9.9m 5.52% Reduced -28.7k -28,710
17 TD Asset Management Inc 0.01% of their portfolio Toronto, A6 1,363,3001.4m $9.4m $9.4m 0.01% Added +1.2m +1,195,416
18 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio BOSTON, MA 1,134,0861.1m $7.8m $7.8m 0.01% Added +27.4k +27,401
19 NewGen Asset Management Ltd 2.62% of their portfolio TORONTO, A6 1,132,9091.1m $7.8m $7.8m 2.62% Added +400.4k +400,409
20 TCW GROUP INC 0.06% of their portfolio LOS ANGELES, CA 1,119,2211.1m $7.7m $7.7m 0.06% Reduced -289.0k -289,000
21 AYAL Capital Advisors Ltd 4.10% of their portfolio Toronto, A6 1,092,0001.1m $7.5m $7.5m 4.10% Reduced -150.7k -150,680
22 Amitell Capital Pte Ltd 4.18% of their portfolio SINGAPORE, U0 1,080,0421.1m $7.4m $7.4m 4.18% New
23 JB CAPITAL PARTNERS LP 1.27% of their portfolio Armonk, NY 992,177992.2k $6.8m $6.8m 1.27% Unchanged
24 Bracebridge Capital, LLC 3.39% of their portfolio BOSTON, MA 924,931924.9k $6.4m $6.4m 3.39% Unchanged
25 LM Asset Management Inc. 5.70% of their portfolio VANCOUVER, A1 890,000890.0k $6.1m $6.1m 5.70% Reduced -20.0k -20,000
26 Bain Capital Credit, LP 2.09% of their portfolio Boston, MA 837,212837.2k $5.8m $5.8m 2.09% Unchanged
27 GENERAL AMERICAN INVESTORS CO INC 0.38% of their portfolio NEW YORK, NY 816,056816.1k $5.6m $5.6m 0.38% Unchanged
28 READYSTATE ASSET MANAGEMENT LP 0.16% of their portfolio CHICAGO, IL 565,225565.2k $3.9m $3.9m 0.16% New
29 HEARTLAND ADVISORS INC 0.19% of their portfolio MILWAUKEE, WI 500,000500.0k $3.4m $3.4m 0.19% Unchanged
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 479,999480.0k $3.3m $3.3m 0.00% Added +234.5k +234,471
31 Empyrean Capital Partners, LP 0.14% of their portfolio LOS ANGELES, CA 452,148452.1k $3.1m $3.1m 0.14% New
32 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 431,725431.7k $3.0m $3.0m 0.00% Reduced -44.0k -44,042
33 Verition Fund Management LLC 0.02% of their portfolio GREENWICH, CT 418,397418.4k $2.9m $2.9m 0.02% New
34 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 405,201405.2k $2.8m $2.8m 0.00% Reduced -251.5k -251,528
35 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 398,037398.0k $2.7m $2.7m 0.00% Reduced -24.2k -24,186
36 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 391,431391.4k $2.7m $2.7m 0.00% Reduced -23.7k -23,712
37 Ewing Morris & Co. Investment Partners Ltd. 1.21% of their portfolio TORONTO, Z4 390,000390.0k $2.7m $2.7m 1.21% Added +180.0k +180,000
38 Polar Asset Management Partners Inc. 0.06% of their portfolio TORONTO, A6 363,216363.2k $2.5m $2.5m 0.06% New
39 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 320,902320.9k $2.2m $2.2m 0.00% Added +245.5k +245,488
40 Federation des caisses Desjardins du Quebec 0.01% of their portfolio LEVIS, A8 313,169313.2k $2.2m $2.2m 0.01% Added +310.2k +310,169
41 CenterBook Partners LP 0.11% of their portfolio GREENWICH, CT 287,590287.6k $2.0m $2.0m 0.11% Added +25.4k +25,424
42 Senvest Management, LLC 0.06% of their portfolio New York, NY 275,089275.1k $1.9m $1.9m 0.06% Unchanged
43 HITE Hedge Asset Management LLC 0.08% of their portfolio BRAINTREE, MA 214,556214.6k $1.5m $1.5m 0.08% Added +128.7k +128,713
44 SummitTX Capital, L.P. 0.06% of their portfolio FORT WORTH, TX 214,000214.0k $1.5m $1.5m 0.06% New
45 Wolf Hill Capital Management, LP 0.12% of their portfolio GREENWICH, CT 213,712213.7k $1.5m $1.5m 0.12% Unchanged
46 MOORE CAPITAL MANAGEMENT, LP 0.03% of their portfolio NEW YORK, NY 212,331212.3k $1.5m $1.5m 0.03% New
47 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 207,720207.7k $1.4m $1.4m 0.00% Added +183.8k +183,798
48 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 196,364196.4k $1.4m $1.4m 0.00% Reduced -407.3k -407,288
49 Caption Management, LLC 0.12% of their portfolio OKLAHOMA CITY, OK 188,663188.7k $1.3m $1.3m 0.12% Added +179.0k +179,009
50 Quinn Opportunity Partners LLC 0.10% of their portfolio CHARLOTTESVILLE, VA 176,342176.3k $1.2m $1.2m 0.10% Reduced -20.0k -20,000
51 Swiss National Bank 0.00% of their portfolio ZURICH, V8 171,507171.5k $1.2m $1.2m 0.00% Reduced -11.6k -11,600
52 UBS Group AG 0.00% of their portfolio ZURICH, V8 169,337169.3k $1.2m $1.2m 0.00% Added +69.9k +69,924
53 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio Boston, MA 157,991158.0k $1.1m $1.1m 0.00% New
54 Mutual Advisors, LLC 0.02% of their portfolio OMAHA, NE 146,802146.8k $914.6k $914.6k 0.02% Unchanged
55 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 140,752140.8k $969.8k $969.8k 0.00% Reduced -668.1k -668,141
56 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 115,258115.3k $794.1k $794.1k 0.00% Added +47.8k +47,766
57 IMC-Chicago, LLC 0.02% of their portfolio CHICAGO, IL 115,231115.2k $793.9k $793.9k 0.02% New
58 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 113,989114.0k $784.6k $784.6k 0.00% Reduced -470 -470
59 GROUP ONE TRADING LLC 0.03% of their portfolio CHICAGO, IL 113,080113.1k $779.1k $779.1k 0.03% New
60 CIBC WORLD MARKET INC. 0.00% of their portfolio TORONTO, A6 99,34599.3k $684.5k $684.5k 0.00% Reduced -53.5k -53,490
61 VAN ECK ASSOCIATES CORP 0.00% of their portfolio NEW YORK, NY 96,09296.1k $662.0k $662.0k 0.00% Added +18.2k +18,183
62 ROBOTTI ROBERT 0.10% of their portfolio NEW YORK, NY 90,00090.0k $620.1k $620.1k 0.10% Unchanged
63 Legal & General Group Plc 0.00% of their portfolio London, X0 88,58388.6k $610.9k $610.9k 0.00% Added +9.0k +8,963
64 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 87,65787.7k $606.1k $606.1k 0.00% Reduced -265.4k -265,407
65 Quantbot Technologies LP 0.01% of their portfolio NEW YORK, NY 83,16983.2k $573.0k $573.0k 0.01% Added +29.6k +29,595
66 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 76,47776.5k $528.5k $528.5k 0.00% Unchanged
67 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 69,75169.8k $481.0k $481.0k 0.00% Reduced -235.0k -234,983
68 Boston Partners 0.00% of their portfolio BOSTON, MA 67,99068.0k $468.4k $468.4k 0.00% Reduced -1.3k -1,268
69 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 65,68965.7k $452.6k $452.6k 0.00% Reduced -8.0k -7,972
70 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 61,69661.7k $425.1k $425.1k 0.00% Reduced -65.8k -65,847
71 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio COLUMBUS, OH 59,11559.1k $408.1k $408.1k 0.00% Added +1.1k +1,087
72 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 57,40057.4k $395.5k $395.5k 0.00% Reduced -170.2k -170,205
73 SUSQUEHANNA ADVISORS GROUP, INC. 0.02% of their portfolio BALA CYNWYD, PA 56,40056.4k $388.6k $388.6k 0.02% New
74 WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio PLYMOUTH, MN 56,00056.0k $397.0k $397.0k 0.00% Unchanged
75 Orion Resource Partners LP 0.07% of their portfolio NEW YORK, NY 53,19353.2k $368.2k $368.2k 0.07% New
76 Eisler Capital Management Ltd. 0.01% of their portfolio LONDON, X0 50,00050.0k $344.2k $344.2k 0.01% New
77 Terril Brothers, Inc. 0.13% of their portfolio St. Louis, MO 49,50049.5k $341.1k $341.1k 0.13% Added +14.0k +14,000
78 MACKENZIE FINANCIAL CORP 0.00% of their portfolio TORONTO ONTARIO, A6 48,27748.3k $333.8k $333.8k 0.00% New
79 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 45,62645.6k $314.4k $314.4k 0.00% Reduced -2.4k -2,395
80 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 44,45144.5k $306.3k $306.3k 0.00% Reduced -5.2k -5,232
81 PDT Partners, LLC 0.02% of their portfolio New York, NY 44,17244.2k $304.3k $304.3k 0.02% New
82 Y-Intercept (Hong Kong) Ltd 0.01% of their portfolio HONG KONG, K3 42,19042.2k $290.7k $290.7k 0.01% Reduced -52.7k -52,656
83 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 38,09938.1k $263.3k $263.3k 0.00% Reduced -105.0k -105,038
84 Phoenix Financial Ltd. 0.00% of their portfolio Givatayim, L3 35,71435.7k $246.1k $246.1k 0.00% Unchanged
85 GAMCO INVESTORS, INC. ET AL 0.00% of their portfolio GREENWICH, CT 31,12531.1k $214.5k $214.5k 0.00% Added +450 +450
86 Claret Asset Management Corp 0.03% of their portfolio MONTREAL, A8 30,37530.4k $209.0k $209.0k 0.03% Unchanged
87 AMH Equity Ltd 0.31% of their portfolio Great Neck, NY 30,19130.2k $208.0k $208.0k 0.31% Reduced -239.8k -239,812
88 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 28,00928.0k $193.0k $193.0k 0.00% Reduced -323.4k -323,362
89 Net Worth Advisory Group 0.04% of their portfolio SANDY, UT 25,96026.0k $178.9k $178.9k 0.04% Added +11.2k +11,184
90 Dynamic Technology Lab Private Ltd 0.02% of their portfolio SINGAPORE, U0 24,94024.9k $172.0k $172.0k 0.02% New
91 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 24,89924.9k $171.6k $171.6k 0.00% Added +373 +373
92 Campbell & CO Investment Adviser LLC 0.01% of their portfolio BALTIMORE, MD 24,43524.4k $168.4k $168.4k 0.01% Added +4.3k +4,346
93 Empirical Financial Services, LLC d.b.a. Empirical Wealth Management 0.00% of their portfolio Seattle, WA 21,77321.8k $150.0k $150.0k 0.00% Unchanged
94 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 21,24421.2k $146.4k $146.4k 0.00% New
95 DekaBank Deutsche Girozentrale 0.00% of their portfolio FRANKFURT, 2M 21,18821.2k $180.0k $180.0k 0.00% Unchanged
96 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 21,14421.1k $141.7k $141.7k 0.00% Reduced -19.6k -19,573
97 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 19,32919.3k $133.2k $133.2k 0.00% Unchanged
98 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 18,40018.4k $126.8k $126.8k 0.00% Reduced -5.2k -5,237
99 Graham Capital Management, L.P. 0.00% of their portfolio ROWAYTON, CT 17,95218.0k $123.7k $123.7k 0.00% New
100 PEAK6 LLC 0.00% of their portfolio AUSTIN, TX 17,80217.8k $122.7k $122.7k 0.00% Reduced -2.3k -2,309