Vault-13

ALGOMA STL GROUP INC ASTL

COM · Common Stock · CUSIP 015658107 · ISIN CA0156581070

98 institutional holders -11 vs Q4 2025
71,877,82671.9m shares reported held*
68.5% of all shares outstanding*
$296.7mreported value*
15 new 32 added 33 reduced 25 sold out net sold ≈ $33.0m (-8.0m 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 ($378.7k this quarter). Holder counts are more reliable. Shares outstanding: 104.9m as of 2025-12-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $4.13. Options: 8 managers hold calls ($3.3m notional), 11 hold puts ($4.8m).

Trends to Q1 2026

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: 128Q3 25: 118Q4 25: 109Q1 26: 9898Q3 22Q3 23Q3 24Q3 25Q1 26
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
Q3 2025118
Q4 2025109
Q1 202698

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q2 24: 52 bought or addedQ2 24: 46 cut or sold outQ3 24: 63 bought or addedQ3 24: 56 cut or sold outQ3 24Q4 24: 62 bought or addedQ4 24: 56 cut or sold outQ1 25: 62 bought or addedQ1 25: 62 cut or sold outQ1 25Q2 25: 59 bought or addedQ2 25: 67 cut or sold outQ3 25: 60 bought or addedQ3 25: 65 cut or sold outQ3 25Q4 25: 63 bought or addedQ4 25: 56 cut or sold outQ1 26: 47 bought or addedQ1 26: 58 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q2 20245246
Q3 20246356
Q4 20246256
Q1 20256262
Q2 20255967
Q3 20256065
Q4 20256356
Q1 20264758

Calls vs puts

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

CallsPuts
$0$10m$20m$30m$40mQ2 25 calls: $31.8mQ2 25 puts: $7.1mQ2 25P/C 0.22Q3 25 calls: $6.3mQ3 25 puts: $6.6mQ3 25P/C 1.05Q4 25 calls: $9.5mQ4 25 puts: $6.9mQ4 25P/C 0.73Q1 26 calls: $3.3mQ1 26 puts: $4.8mQ1 26P/C 1.46
Numbers
QuarterCallsPutsP/C
Q2 2025$31.8m$7.1m0.22
Q3 2025$6.3m$6.6m1.05
Q4 2025$9.5m$6.9m0.73
Q1 2026$3.3m$4.8m1.46

Biggest buyers

Maple Rock Capital Partners Inc. Added +1,500,000+1.5m
MMCAP International Inc. SPC Added +1,357,761+1.4m
Sourcerock Group LLC New +1,306,403+1.3m
HRT FINANCIAL LP New +467,190+467.2k
MORGAN STANLEY Added +443,172+443.2k
LM Asset Management Inc. Added +295,000+295.0k
TWO SIGMA INVESTMENTS, LP New +269,900+269.9k
JPMORGAN CHASE & CO New +230,817+230.8k
ExodusPoint Capital Management, LP Added +203,223+203.2k
JANE STREET GROUP, LLC Added +193,624+193.6k

Biggest sellers

BlackRock, Inc. Reduced -4,386,450-4.4m
GOLDENTREE ASSET MANAGEMENT LP Sold out -2,493,548-2.5m
FMR LLC Sold out -2,208,646-2.2m
Verition Fund Management LLC Reduced -1,221,999-1.2m
TD Asset Management Inc Reduced -845,516-845.5k
UBS Group AG Reduced -637,807-637.8k
Connor, Clark & Lunn Investment Management Ltd. Reduced -539,105-539.1k
Walleye Capital LLC Sold out -537,234-537.2k
BANK OF AMERICA CORP /DE/ Reduced -459,964-460.0k
Orion Resource Partners LP Sold out -381,728-381.7k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $1.3m312.9k shares
SIG North Trading, ULC Added $880.9k213.3k shares
CDC Financial, Inc. Reduced $578.2k140.0k shares
IMC-Chicago, LLC New $188.3k45.6k shares
SIMPLEX TRADING, LLC Reduced $164.4k39.8k shares
CITADEL ADVISORS LLC Reduced $159.8k38.7k shares
GROUP ONE TRADING LLC Added $26.4k6.4k shares
FNY Investment Advisers, LLC Added $23.0k5.6k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $1.4m345.2k shares
SIMPLEX TRADING, LLC Reduced $1.3m304.4k shares
Purpose Unlimited Inc. New $825.2k200.0k shares
Caption Management, LLC Unchanged $557.5k135.0k shares
SIG North Trading, ULC Reduced $350.2k84.8k shares
CITADEL ADVISORS LLC Reduced $205.3k49.7k shares
D. E. Shaw & Co., Inc. Unchanged $79.3k19.2k shares
IMC-Chicago, LLC Reduced $51.2k12.4k shares
GROUP ONE TRADING LLC Reduced $41.7k10.1k shares
TORONTO DOMINION BANK Unchanged $41.3k10.0k 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 Q1 2026

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 Q1 2026.

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Maple Rock Capital Partners Inc. 2.14% of their portfolio Toronto, A6 15,930,81815.9m $65.8m $65.8m 2.14% Added +1.5m +1,500,000
2 MMCAP International Inc. SPC 4.58% of their portfolio GRAND CAYMAN, E9 12,845,62212.8m $53.1m $53.1m 4.58% Added +1.4m +1,357,761
3 DONALD SMITH & CO., INC. 0.45% of their portfolio NEW YORK, NY 6,028,9296.0m $24.9m $24.9m 0.45% Added +167.3k +167,298
4 BlackRock, Inc. 0.00% of their portfolio New York, NY 4,115,4534.1m $17.0m $17.0m 0.00% Reduced -4.4m -4,386,450
5 LITTLEJOHN & CO LLC 13.49% of their portfolio GREENWICH, CT 3,446,5033.4m $14.2m $14.2m 13.49% Unchanged
6 Scheer, Rowlett & Associates Investment Management Ltd. 0.95% of their portfolio TORONTO, A6 3,207,4803.2m $13.2m $13.2m 0.95% Reduced -129.0k -129,045
7 AEGIS FINANCIAL CORP 1.27% of their portfolio MC LEAN, VA 1,786,1221.8m $7.4m $7.4m 1.27% Unchanged
8 LM Asset Management Inc. 4.40% of their portfolio VANCOUVER, A1 1,765,0001.8m $7.3m $7.3m 4.40% Added +295.0k +295,000
9 Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio VANCOUVER, A1 1,725,7581.7m $7.1m $7.1m 0.02% Reduced -539.1k -539,105
10 CDC Financial, Inc. 5.52% of their portfolio CHICAGO, IL 1,613,7491.6m $6.7m $6.7m 5.52% Added +33.0k +33,000
11 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,483,7111.5m $6.1m $6.1m 0.00% Added +443.2k +443,172
12 Sourcerock Group LLC 0.23% of their portfolio DENVER, CO 1,306,4031.3m $5.4m $5.4m 0.23% New
13 Solas Capital Management, LLC 2.49% of their portfolio DARIEN, CT 1,047,4541.0m $4.3m $4.3m 2.49% Reduced -21.9k -21,897
14 Bracebridge Capital, LLC 0.69% of their portfolio BOSTON, MA 924,931924.9k $3.8m $3.8m 0.69% Unchanged
15 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 895,566895.6k $3.7m $3.7m 0.00% Added +193.6k +193,624
16 Quadrature Capital Ltd 0.04% of their portfolio LONDON, X0 878,540878.5k $3.6m $3.6m 0.04% Reduced -139.6k -139,560
17 JB CAPITAL PARTNERS LP 0.62% of their portfolio Armonk, NY 872,277872.3k $3.6m $3.6m 0.62% Unchanged
18 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 841,904841.9k $3.5m $3.5m 0.00% Reduced -845.5k -845,516
19 Bain Capital Credit, LP 1.13% of their portfolio Boston, MA 825,777825.8k $3.4m $3.4m 1.13% Unchanged
20 TCW GROUP INC 0.02% of their portfolio LOS ANGELES, CA 768,178768.2k $3.2m $3.2m 0.02% Added +95.5k +95,500
21 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 766,411766.4k $3.2m $3.2m 0.00% Added +169.5k +169,451
22 Ewing Morris & Co. Investment Partners Ltd. 1.32% of their portfolio TORONTO, Z4 710,000710.0k $2.9m $2.9m 1.32% Added +97.5k +97,500
23 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 598,919598.9k $2.5m $2.5m 0.00% Reduced -103.8k -103,815
24 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 571,566571.6k $2.4m $2.4m 0.00% Added +170.1k +170,076
25 HRT FINANCIAL LP 0.01% of their portfolio NEW YORK, NY 467,190467.2k $1.9m $1.9m 0.01% New
26 READYSTATE ASSET MANAGEMENT LP 0.11% of their portfolio CHICAGO, IL 463,228463.2k $1.9m $1.9m 0.11% Reduced -177.1k -177,096
27 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 361,996362.0k $1.5m $1.5m 0.00% Reduced -21.6k -21,591
28 UBS Group AG 0.00% of their portfolio ZURICH, V8 306,957307.0k $1.3m $1.3m 0.00% Reduced -637.8k -637,807
29 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 272,613272.6k $1.1m $1.1m 0.00% Added +68.7k +68,697
30 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 270,544270.5k $1.1m $1.1m 0.00% Reduced -252.7k -252,714
31 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 269,900269.9k $1.1m $1.1m 0.00% New
32 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 267,743267.7k $1.1m $1.1m 0.00% Reduced -354.7k -354,661
33 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 252,457252.5k $1.0m $1.0m 0.00% Added +97.2k +97,207
34 CenterBook Partners LP 0.05% of their portfolio GREENWICH, CT 233,509233.5k $964.4k $964.4k 0.05% Reduced -165.3k -165,336
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 230,817230.8k $914.0k $914.0k 0.00% New
36 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 229,563229.6k $948.1k $948.1k 0.01% Added +203.2k +203,223
37 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 182,347182.3k $753.1k $753.1k 0.01% Added +38.6k +38,643
38 SIG North Trading, ULC 0.14% of their portfolio Bala Cynwyd, PA 171,817171.8k $709.6k $709.6k 0.14% Added +69.9k +69,900
39 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 171,556171.6k $708.5k $708.5k 0.00% Added +125.3k +125,310
40 Quantbot Technologies LP 0.03% of their portfolio NEW YORK, NY 157,928157.9k $652.2k $652.2k 0.03% Added +30.1k +30,081
41 SIMPLEX TRADING, LLC 0.02% of their portfolio CHICAGO, IL 154,905154.9k $639.8k $639.8k 0.02% Added +80.8k +80,777
42 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 146,821146.8k $607.0k $607.0k 0.00% Added +1.2k +1,225
43 Quinn Opportunity Partners LLC 0.03% of their portfolio CHARLOTTESVILLE, VA 142,336142.3k $587.8k $587.8k 0.03% Unchanged
44 Voleon Capital Management LP 0.01% of their portfolio BERKELEY, CA 130,919130.9k $540.7k $540.7k 0.01% Added +90.8k +90,833
45 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 117,276117.3k $484.4k $484.4k 0.00% New
46 Summit Financial, LLC 0.01% of their portfolio PARSIPPANY, NJ 110,333110.3k $455.7k $455.7k 0.01% Unchanged
47 Assenagon Asset Management S.A. 0.00% of their portfolio SENNINGERBERG, N4 99,10799.1k $409.3k $409.3k 0.00% New
48 MACKENZIE FINANCIAL CORP 0.00% of their portfolio TORONTO ONTARIO, A6 98,77398.8k $407.5k $407.5k 0.00% Added +4.0k +3,997
49 AYAL Capital Advisors Ltd 0.20% of their portfolio Toronto, A6 95,00095.0k $392.4k $392.4k 0.20% New
50 ARISTEIA CAPITAL, L.L.C. 0.01% of their portfolio GREENWICH, CT 91,42391.4k $377.6k $377.6k 0.01% Reduced -28.8k -28,837
51 Boston Partners 0.00% of their portfolio BOSTON, MA 87,06787.1k $359.6k $359.6k 0.00% Added +18.5k +18,469
52 GROUP ONE TRADING LLC 0.01% of their portfolio CHICAGO, IL 85,65685.7k $353.8k $353.8k 0.01% Reduced -17.5k -17,531
53 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 73,91673.9k $307.1k $307.1k 0.00% New
54 PDT Partners, LLC 0.02% of their portfolio New York, NY 70,30470.3k $290.4k $290.4k 0.02% Reduced -8.5k -8,500
55 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 65,41765.4k $270.2k $270.2k 0.00% Reduced -48.7k -48,684
56 FNY Investment Advisers, LLC 0.12% of their portfolio NEW YORK, NY 65,28865.3k $269.0k $269.0k 0.12% Reduced -20.7k -20,705
57 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 64,17464.2k $265.0k $265.0k 0.00% New
58 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 63,81363.8k $263.5k $263.5k 0.00% Unchanged
59 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 62,39362.4k $257.7k $257.7k 0.00% Reduced -460.0k -459,964
60 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 59,79459.8k $246.9k $246.9k 0.00% Reduced -2.4k -2,400
61 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 59,15059.1k $244.3k $244.3k 0.00% Reduced -7.6k -7,563
62 Terril Brothers, Inc. 0.07% of their portfolio St. Louis, MO 58,00058.0k $239.5k $239.5k 0.07% Unchanged
63 GSA CAPITAL PARTNERS LLP 0.01% of their portfolio LONDON, X0 54,98355.0k $227.0k $227.0k 0.01% Added +12.5k +12,494
64 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 54,37954.4k $222.4k $222.4k 0.00% Reduced -23.1k -23,129
65 Aquatic Capital Management LLC 0.01% of their portfolio CHICAGO, IL 47,25747.3k $195.2k $195.2k 0.01% Added +38.4k +38,448
66 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 45,07045.1k $186.1k $186.1k 0.00% New
67 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 41,07641.1k $169.5k $169.5k 0.00% Reduced -28.1k -28,096
68 Phoenix Financial Ltd. 0.00% of their portfolio Givatayim, L3 35,71435.7k $147.5k $147.5k 0.00% Unchanged
69 TWO SIGMA SECURITIES, LLC 0.02% of their portfolio NEW YORK, NY 35,36735.4k $146.1k $146.1k 0.02% Added +25.1k +25,093
70 FIL Ltd 0.00% of their portfolio HAMILTON, D0 30,96131.0k $127.8k $127.8k 0.00% Added +10.4k +10,391
71 Claret Asset Management Corp 0.01% of their portfolio MONTREAL, A8 30,37530.4k $125.0k $125.0k 0.01% Unchanged
72 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 28,29928.3k $116.9k $116.9k 0.00% Unchanged
73 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 26,80326.8k $110.7k $110.7k 0.00% Reduced -1.2m -1,221,999
74 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 26,17826.2k $107.8k $107.8k 0.00% Added +16.1k +16,118
75 CIBC WORLD MARKET INC. 0.00% of their portfolio TORONTO, A6 25,55125.6k $105.5k $105.5k 0.00% Reduced -6.9k -6,874
76 Net Worth Advisory Group 0.02% of their portfolio SANDY, UT 22,38822.4k $92.5k $92.5k 0.02% Reduced -1.3k -1,255
77 Empirical Financial Services, LLC d.b.a. Empirical Wealth Management 0.00% of their portfolio Seattle, WA 21,77321.8k $89.9k $89.9k 0.00% Unchanged
78 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 18,36018.4k $75.0k $75.0k 0.00% Added +500 +500
79 Caption Management, LLC 0.00% of their portfolio OKLAHOMA CITY, OK 17,29917.3k $71.4k $71.4k 0.00% Added +9.8k +9,843
80 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 15,39015.4k $63.6k $63.6k 0.00% Reduced -49.0k -48,990
81 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 15,00015.0k $62.0k $62.0k 0.00% Reduced -15.0k -15,000
82 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 14,80014.8k $60.0k $60.0k 0.00% Reduced -4.6k -4,600
83 Scientech Research LLC 0.05% of their portfolio JERSEY CITY, NJ 13,74813.7k $56.8k $56.8k 0.05% New
84 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 13,18813.2k $54.5k $54.5k 0.00% New
85 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 11,51711.5k $47.6k $47.6k 0.00% New
86 EJF Capital LP 0.03% of their portfolio Arlington, VA 11,00011.0k $45.4k $45.4k 0.03% Unchanged
87 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 10,80710.8k $44.6k $44.6k 0.00% Reduced -272 -272
88 ELEMENT POINTE ADVISORS, LLC 0.01% of their portfolio MIAMI, FL 10,00010.0k $41.3k $41.3k 0.01% Unchanged
89 Aviso Financial Inc. 0.00% of their portfolio TORONTO, A6 6,0336.0k $24.9k $24.9k 0.00% Reduced -526 -526
90 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 4,7004.7k $19.1k $19.1k 0.00% New
91 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,8553.9k $15.9k $15.9k 0.00% Added +1.5k +1,518
92 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 3,2363.2k $13.3k $13.3k 0.00% Reduced -3.9k -3,884
93 ASSETMARK, INC 0.00% of their portfolio CONCORD, CA 2,5002.5k $10.3k $10.3k 0.00% New
94 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,6831.7k $7.0k $7.0k 0.00% Added +1.5k +1,516
95 Ulland Investment Advisors, LLC 0.00% of their portfolio MINNEAPOLIS, MN 1,0001.0k $4.0k $4.0k 0.00% Unchanged
96 Arlington Trust Co LLC 0.00% of their portfolio BIRMINGHAM, AL 100100 $413 $413 0.00% Unchanged
97 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 5151 $211 $211 0.00% Reduced -50 -50
98 Basepoint Wealth LLC 0.00% of their portfolio CEDAR RAPIDS, IA 5151 $212 $212 0.00% Unchanged