ASTL · Algoma Steel Group Inc. · Holdings
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.
Institutional Ownership Trend
Holder Concentration
Across 106 13F filersWho Holds ASTL
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 106 filers, like-for-like change +0.7%; actively managed books -1.2%; index-like books +25.4%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 48.4% | 46 | +2.1% |
| Exempt adviser | 4.9% | 4 | +12.5% |
| Adviser | 0.1% | 1 | -28.9% |
| Bank | 2.3% | 9 | +33.9% |
| Broker-dealer | 0.1% | 2 | -34.3% |
| Non-US | 0.5% | 4 | +369.4% |
| Holding company | 9.6% | 5 | +20.5% |
| Registered fund | 0.0% | 0 | — |
| Benefit plan | 0.0% | 0 | — |
| Unknown | 34.1% | 35 | -9.1% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 9.0% | 5 | +25.4% |
| Systematic-like | 5.8% | 15 | +44.6% |
| Concentrated | 23.3% | 20 | -6.4% |
| Diversified active | 61.9% | 66 | -2.1% |
| Unknown | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 22.4% | 36 | +13.2% |
| Medium turnover | 42.6% | 33 | -1.2% |
| High turnover | 27.9% | 35 | -5.3% |
| Unknown | 7.1% | 2 | +2.3% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 10.7% | 17 | -3.0% |
| Medium horizon | 33.2% | 18 | -9.5% |
| Long horizon | 31.0% | 57 | +5.7% |
| Unknown | 25.0% | 14 | +13.0% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 19.7% | 23 | -11.5% |
| $1B to $10B | 50.7% | 30 | -2.3% |
| $10B to $100B | 10.4% | 20 | +12.1% |
| $100B or more | 19.2% | 33 | +21.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 0.3% | 8 | -7.6% |
| Pooled investment vehicles | 36.7% | 28 | +7.2% |
| Registered funds and BDCs | 3.3% | 6 | -5.5% |
| Diversified | 8.1% | 4 | -13.1% |
| Other investment advisers | 0.0% | 0 | — |
| Insurance companies | 0.0% | 0 | — |
| Governments and sovereign funds | 0.0% | 0 | — |
| Corporations | 0.0% | 0 | — |
| Unknown | 51.6% | 60 | -0.6% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 44.8% | 34 | +0.6% |
| Private equity funds | 0.0% | 2 | +2.0% |
| Other private funds | 2.2% | 4 | +199.2% |
| Private funds, type not stated | 3.4% | 2 | +0.9% |
| No private funds | 2.8% | 8 | -6.9% |
| Securitized asset funds | 0.0% | 0 | — |
| Mixed private funds | 0.0% | 0 | — |
| Liquidity funds | 0.0% | 0 | — |
| Unknown | 46.7% | 56 | -1.8% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 48.4% | 75 | +3.0% |
| Outside the US | 51.6% | 31 | -1.3% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Conviction and Crowding
95 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net sellers of $3,595,139 (0 buying, 1 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 95.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies ASTL's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | VFF Village Farms International, Inc. | 3 |
| 2 | GFR Greenfire Resources Ltd. | 3 |
| 3 | RYZ Ryerson Holding Corp | 3 |
| 4 | VET Vermilion Energy Inc. | 3 |
| 5 | CRON Cronos Group Inc. | 3 |
| 6 | HNRG Hallador Energy Co | 3 |
| 7 | WFG West Fraser Timber Co., Ltd | 3 |
| 8 | GNW Genworth Financial Inc | 3 |
| 9 | OR OR Royalties Inc. | 4 |
| 10 | TFII TFI International Inc. | 4 |
Shareholder Targets
13F filers that own its peers but not ASTL, quarter ended Jun 30, 2026Found through its holder-overlap peers: VFF, GFR, RYZ, VET, CRON, HNRG, WFG, GNW, OR, TFII, EQX, MOS, MT, EGO, TDW, AGI, TRP, BMO, NTR, CNQ. 1,987 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like | $11,072,143,114 16 held | BMO, CNQ, TRP |
| 2 | Capital World Investors Adviser, Diversified active | $9,321,635,004 6 held | CNQ, TRP, NTR |
| 3 | Capital Research Global Investors Adviser, Diversified active | $8,031,629,623 3 held | CNQ, TRP, EGO |
| 4 | FMR LLC Holding company, Diversified active | $6,453,527,979 16 held | CNQ, BMO, MT |
| 5 | 1832 Asset Management L.P. Non-US, Diversified active | $5,134,200,467 9 held | BMO, TRP, CNQ |
| 6 | CANADA PENSION PLAN INVESTMENT BOARD Non-US, Diversified active | $4,480,884,780 9 held | CNQ, BMO, TRP |
| 7 | VAN ECK ASSOCIATES CORP Registered adviser, Index-like | $3,360,723,297 12 held | AGI, EQX, EGO |
| 8 | NORGES BANK Non-US, Index-like | $3,239,784,384 11 held | BMO, TRP, NTR |
| 9 | VANGUARD FIDUCIARY TRUST CO Unknown, Index-like | $3,235,750,638 16 held | BMO, CNQ, TRP |
| 10 | CIBC Asset Management Inc Registered adviser, Diversified active | $2,827,565,932 14 held | BMO, CNQ, TRP |
Fund Ownership of ASTL by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 0.90% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.18% | 186,293 |
| Index ETFs | 0.72% | 759,818 |
| Active ETFs | 0.22% | 232,990 |
| Active funds | 4.64% | 4,889,382 |
| Unclassified | 0.04% | 40,668 |
| All registered funds | 5.80% | 6,109,151 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Maple Rock Capital Partners Inc. Registered adviser | $68,290,362 | 23.17% | 16,861,818 | Shares | 2026-08-14 | |
| Mid MMCAP International Inc. SPC | $44,366,688 | 15.05% | 10,954,738 | Shares | 2026-08-14 | |
| Mid DONALD SMITH & CO., INC. Registered adviser | $21,374,405 | 7.25% | 5,277,631 | Shares | 2026-08-11 | |
| Mega BlackRock, Inc. Holding company | $16,780,220 | 5.69% | 4,143,265 | Shares | 2026-08-07 | |
| Mid Scheer, Rowlett & Associates Investment Management Ltd. | $15,577,879 | 5.29% | 3,846,390 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $11,981,316 | 4.07% | 2,958,350 | Shares | 2026-08-13 | |
| Small AEGIS FINANCIAL CORP Registered adviser | $7,233,794 | 2.45% | 1,786,122 | Shares | 2026-08-12 | |
| Small CDC Financial, Inc. | $7,069,870 | 2.40% | 1,745,647 | Shares | 2026-08-14 | |
| Small BRIGHTLINE CAPITAL MANAGEMENT, LLC Registered adviser | $6,723,000 | 2.28% | 1,660,000 | Shares | 2026-08-14 | |
| Micro LITTLEJOHN & CO LLC Registered adviser | $6,150,791 | 2.09% | 1,518,714 | Shares | 2026-08-17 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $5,618,646 | 1.91% | 1,387,320 | Shares | 2026-08-13 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $5,385,714 | 1.83% | 1,329,806 | Shares | 2026-08-13 | |
| Mid Sourcerock Group LLC Registered adviser | $5,052,403 | 1.71% | 1,247,507 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $4,219,334 | 1.43% | 1,041,811 | Shares | 2026-08-14 | |
| Small LM Asset Management Inc. | $4,114,800 | 1.40% | 1,016,000 | Shares | 2026-08-11 | |
| Small Bracebridge Capital, LLC Registered adviser | $3,745,970 | 1.27% | 924,931 | Shares | 2026-08-14 | |
| Small JB CAPITAL PARTNERS LP | $3,532,721 | 1.20% | 872,277 | Shares | 2026-08-11 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $3,426,035 | 1.16% | 845,935 | Shares | 2026-09-02 | |
| Small Bain Capital Credit, LP Registered adviser | $3,344,396 | 1.13% | 825,777 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $3,281,342 | 1.11% | 810,208 | Shares | 2026-08-12 | |
| Small Ewing Morris & Co. Investment Partners Ltd. Exempt adviser | $2,925,517 | 0.99% | 722,350 | Shares | 2026-08-14 | |
| Large Quadrature Capital Ltd | $2,764,096 | 0.94% | 682,493 | Shares | 2026-08-07 | |
| Mega D. E. Shaw & Co., Inc. | $2,715,010 | 0.92% | 670,373 | Shares | 2026-08-14 | |
| Large TCW GROUP INC Holding company | $2,460,285 | 0.83% | 607,478 | Shares | 2026-08-03 | |
| Large Point72 Asset Management, L.P. Registered adviser | $2,329,661 | 0.79% | 575,225 | Shares | 2026-08-14 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $2,022,950 | 0.69% | 499,494 | Shares | 2026-08-13 | |
| Mega TD Asset Management Inc | $2,018,029 | 0.68% | 498,279 | Shares | 2026-08-04 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $1,977,185 | 0.67% | 488,194 | Shares | 2026-08-13 | |
| Mega Russell Investments Group, Ltd. | $1,908,713 | 0.65% | 471,288 | Shares | 2026-08-06 | |
| Mid READYSTATE ASSET MANAGEMENT LP Registered adviser | $1,876,073 | 0.64% | 463,228 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $1,775,645 | 0.60% | 438,431 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $1,695,953 | 0.58% | 418,754 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $1,567,115 | 0.53% | 386,942 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $1,442,268 | 0.49% | 356,116 | Shares | 2026-08-11 | |
| Mega BARCLAYS PLC Bank | $1,251,335 | 0.42% | 308,972 | Shares | 2026-08-14 | |
| Mid Voleon Capital Management LP Registered adviser | $1,244,552 | 0.42% | 307,297 | Shares | 2026-08-14 | |
| Large Jump Financial, LLC | $1,173,183 | 0.40% | 289,675 | Shares | 2026-08-13 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $1,168,376 | 0.40% | 288,488 | Shares | 2026-08-12 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $1,073,225 | 0.36% | 264,994 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $999,135 | 0.34% | 246,700 | Put | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $750,465 | 0.25% | 185,300 | Call | 2026-08-14 | |
| Mega ROYAL BANK OF CANADA Bank | $604,676 | 0.21% | 149,303 | Shares | 2026-08-14 | |
| Mid Quinn Opportunity Partners LLC Registered adviser | $576,460 | 0.20% | 142,336 | Shares | 2026-08-14 | |
| Mid SIMPLEX TRADING, LLC | $509,186 | 0.17% | 125,725 | Shares | 2026-08-12 | |
| Mid XTX Topco Ltd | $496,781 | 0.17% | 122,662 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $470,780 | 0.16% | 116,242 | Shares | 2026-08-14 | |
| Mid SIG North Trading, ULC | $447,525 | 0.15% | 110,500 | Call | 2026-08-14 | |
| Mid Summit Financial, LLC | $446,848 | 0.15% | 110,333 | Shares | 2026-08-12 | |
| Mid Quantbot Technologies LP Registered adviser | $442,255 | 0.15% | 109,199 | Shares | 2026-08-12 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $412,071 | 0.14% | 101,746 | Shares | 2026-08-14 | |
| Mid SIG North Trading, ULC | $389,273 | 0.13% | 96,117 | Shares | 2026-08-14 | |
| Mega Boston Partners Registered adviser | $359,741 | 0.12% | 88,825 | Shares | 2026-08-04 | |
| Mid PDT Partners, LLC Registered adviser | $295,969 | 0.10% | 73,079 | Shares | 2026-08-14 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $288,335 | 0.10% | 71,194 | Shares | 2026-08-14 | |
| Mid SIG North Trading, ULC | $280,260 | 0.10% | 69,200 | Put | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $274,828 | 0.09% | 67,859 | Shares | 2026-08-12 | |
| Mid GSA CAPITAL PARTNERS LLP Registered adviser | $269,175 | 0.09% | 66,463 | Shares | 2026-08-06 | |
| Mega LPL Financial LLC Broker-dealer | $228,930 | 0.08% | 56,526 | Shares | 2026-08-07 | |
| Small Terril Brothers, Inc. | $218,700 | 0.07% | 54,000 | Shares | 2026-07-24 | |
| Mega HSBC HOLDINGS PLC | $215,731 | 0.07% | 53,267 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $213,382 | 0.07% | 52,687 | Shares | 2026-08-14 | |
| Small Net Worth Advisory Group Registered adviser | $207,503 | 0.07% | 49,761 | Shares | 2026-10-20 | |
| Mega AMERICAN CENTURY COMPANIES INC | $205,740 | 0.07% | 50,800 | Shares | 2026-08-12 | |
| Mega Invesco Ltd. Adviser | $170,318 | 0.06% | 42,054 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $169,314 | 0.06% | 41,806 | Shares | 2026-08-14 | |
| Mid Campbell & CO Investment Adviser LLC Registered adviser | $166,248 | 0.06% | 41,049 | Shares | 2026-08-03 | |
| Small CDC Financial, Inc. | $162,000 | 0.05% | 40,000 | Call | 2026-08-14 | |
| Large Phoenix Financial Ltd. | $144,641 | 0.05% | 35,714 | Shares | 2026-08-11 | |
| Mid Lavaca Capital LLC Registered adviser | $144,070 | 0.05% | 35,573 | Shares | 2026-08-14 | |
| Mid GROUP ONE TRADING LLC Broker-dealer | $141,328 | 0.05% | 34,896 | Shares | 2026-08-14 | |
| Mid PRELUDE CAPITAL MANAGEMENT, LLC Registered adviser | $129,118 | 0.04% | 31,881 | Shares | 2026-08-14 | |
| Small Claret Asset Management Corp Registered adviser | $123,018 | 0.04% | 30,375 | Shares | 2026-07-27 | |
| Large NewEdge Advisors, LLC Registered adviser | $112,990 | 0.04% | 27,899 | Shares | 2026-08-12 | |
| Large Verition Fund Management LLC Registered adviser | $108,552 | 0.04% | 26,803 | Shares | 2026-08-14 | |
| Micro Olympiad Research LP Registered adviser | $104,230 | 0.04% | 25,736 | Shares | 2026-07-24 | |
| Large CIBC WORLD MARKET INC. | $102,465 | 0.03% | 25,300 | Shares | 2026-08-13 | |
| Mega FIL Ltd Non-US | $92,777 | 0.03% | 22,908 | Shares | 2026-08-13 | |
| Mid Empirical Financial Services, LLC d.b.a. Empirical Wealth Management Registered adviser | $88,180 | 0.03% | 21,773 | Shares | 2026-07-15 | |
| Large Federation des caisses Desjardins du Quebec | $74,358 | 0.03% | 18,360 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $58,320 | 0.02% | 14,400 | Call | 2026-08-14 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $45,453 | 0.02% | 11,223 | Shares | 2026-08-07 | |
| Mid Aquatic Capital Management LLC Registered adviser | $45,250 | 0.02% | 11,173 | Shares | 2026-08-14 | |
| Small EJF Capital LP | $44,550 | 0.02% | 11,000 | Shares | 2026-08-13 | |
| Mega SG Americas Securities, LLC Non-US | $44,088 | 0.01% | 10,886 | Shares | 2026-08-07 | |
| Small ELEMENT POINTE ADVISORS, LLC Registered adviser | $41,700 | 0.01% | 10,000 | Shares | 2026-10-21 | |
| Large TORONTO DOMINION BANK Bank | $40,500 | 0.01% | 10,000 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $33,590 | 0.01% | 8,294 | Shares | 2026-08-13 | |
| Mega CITIGROUP INC Bank | $27,738 | 0.01% | 6,849 | Shares | 2026-08-03 | |
| Mid Aviso Financial Inc. | $24,964 | 0.01% | 6,164 | Shares | 2026-08-13 | |
| Large ASSETMARK, INC Registered adviser | $10,425 | 0.00% | 2,500 | Shares | 2026-10-21 | |
| Large OSAIC HOLDINGS, INC. Holding company | $6,812 | 0.00% | 1,682 | Shares | 2026-08-14 | |
| Small Stone House Investment Management, LLC Registered adviser | $4,403 | 0.00% | 1,056 | Shares | 2026-10-23 | |
| Mega JONES FINANCIAL COMPANIES LLLP | $3,555 | 0.00% | 878 | Shares | 2026-08-14 | |
| Large TD Waterhouse Canada Inc. | $834 | 0.00% | 200 | Shares | 2026-10-16 | |
| Small Caitong International Asset Management Co., Ltd | $518 | 0.00% | 128 | Shares | 2026-08-05 | |
| Small Physician Wealth Advisors, Inc. Registered adviser | $462 | 0.00% | 111 | Shares | 2026-10-20 | |
| Mid Arlington Trust Co LLC | $417 | 0.00% | 100 | Shares | 2026-10-20 | |
| Mid Tower Research Capital LLC (TRC) | $315 | 0.00% | 78 | Shares | 2026-08-11 | |
| Mid SBI Securities Co., Ltd. Non-US | $208 | 0.00% | 50 | Shares | 2026-10-22 | |
| Small Basepoint Wealth LLC Registered adviser | $206 | 0.00% | 51 | Shares | 2026-08-10 |
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