Algoma Steel Group Inc. (ASTL) Ownership
ASTL ownership summary
as of October 17, 2026- Institutions
- 71.8% of shares outstanding
- Insiders
- 5.04% of shares outstanding
- Shares outstanding
- 105.7M
- Float
- 70.5M shares available to trade
- Short interest
- 5.79% 4.6M shares short
- Days to cover
- 5.70 short interest up 11.4% vs prior month
- Institutions 71.81%
- Insiders 5.04%
- Other investors 23.15%
ASTL top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Maple Rock Capital Partners, Inc. | 15.96% | 16.9M | $68.0M | +931,000 (+5.8%) | June 30, 2026 |
| 2 | Mmcap International Inc. Spc | 10.37% | 11.0M | $44.1M | −1.9M (−14.7%) | June 30, 2026 |
| 3 | Donald Smith & Co Inc | 4.99% | 5.3M | $21.3M | −751,298 (−12.5%) | June 30, 2026 |
| 4 | BlackRock Inc | 3.92% | 4.1M | $16.7M | +27,812 (+0.7%) | June 30, 2026 |
| 5 | Scheer, Rowlett & Assoc Invest Mgmt Ltd. | 3.64% | 3.8M | $15.5M | +638,910 (+19.9%) | June 30, 2026 |
| 6 | Morgan Stanley - Brokerage Accounts | 2.80% | 3.0M | $11.9M | +1.5M (+99.4%) | June 30, 2026 |
| 7 | Aegis Financial Corporation | 1.69% | 1.8M | $7.2M | — | June 30, 2026 |
| 8 | CDC Financial, Inc. | 1.65% | 1.7M | $7.0M | +131,898 (+8.2%) | June 30, 2026 |
| 9 | Brightline Capital Management LLC | 1.57% | 1.7M | $6.7M | +1.7M (0.0%) | June 30, 2026 |
| 10 | LITTLEJOHN & CO LLC | 1.44% | 1.5M | $6.1M | −1.9M (−55.9%) | June 30, 2026 |
| 11 | Connor Clark & Lunn Inv Mgmt Ltd | 1.31% | 1.4M | $5.6M | −338,438 (−19.6%) | June 30, 2026 |
| 12 | Mackenzie Investments | 1.26% | 1.3M | $5.4M | +1.2M (+1,246.3%) | June 30, 2026 |
| 13 | Sourcerock Group LLC | 1.18% | 1.2M | $5.0M | −58,896 (−4.5%) | June 30, 2026 |
| 14 | Two Sigma Investments LLC | 0.99% | 1.0M | $4.2M | +771,911 (+286.0%) | June 30, 2026 |
| 15 | LM Asset (IM) Inc. | 0.96% | 1.0M | $4.1M | −749,000 (−42.4%) | June 30, 2026 |
| 16 | Bracebridge Capital, LLC | 0.88% | 925K | $3.7M | — | June 30, 2026 |
| 17 | Jb Capital Partners LP | 0.83% | 872K | $3.5M | — | June 30, 2026 |
| 18 | Citadel Advisors Llc | 0.80% | 846K | $3.4M | +578,192 (+216.0%) | June 30, 2026 |
| 19 | Bain Capital Credit | 0.78% | 826K | $3.3M | — | June 30, 2026 |
| 20 | JPMorgan Chase & Co | 0.77% | 810K | $3.3M | +579,391 (+251.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 8.0M shares and 6 cut 5.7M.
ASTL top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Aegis Value I | 1.63% | 1.7M | $7.0M | — | June 30, 2026 |
| 2 | BlackRock Strategic Income Opps Instl | 1.18% | 1.3M | $5.0M | — | July 31, 2026 |
| 3 | FaithLife Cdn Equity (Value) | 0.78% | 821K | $3.3M | +147,100 (+21.8%) | June 30, 2026 |
| 4 | BlackRock Global Allocation Instl | 0.52% | 547K | $2.2M | — | July 31, 2026 |
| 5 | iA Cdn Eq Sm Cap (iA) SRP7575P500F | 0.52% | 545K | $2.2M | +20,176 (+3.8%) | August 31, 2026 |
| 6 | BGF Global Allocation A2 | 0.45% | 474K | $1.9M | — | June 30, 2026 |
| 7 | iProfile Canadian Equity Private Pool I | 0.40% | 419K | $1.7M | — | July 31, 2026 |
| 8 | Orion Resource Equities A USD Acc | 0.36% | 382K | $1.5M | +150,015 (+64.7%) | December 31, 2025 |
| 9 | BlackRock Total Return K | 0.28% | 297K | $1.2M | — | June 30, 2026 |
| 10 | BGF Fixed Income Global Opps A2 | 0.23% | 247K | $996,941 | — | June 30, 2026 |
| 11 | BMO Equal Weight Industrials ETF | 0.22% | 237K | $955,243 | — | September 9, 2026 |
| 12 | Russell Inv US Small Cap Equity Y | 0.22% | 228K | $917,208 | — | August 31, 2026 |
| 13 | Schwab Fundamental International SmEqETF | 0.19% | 203K | $817,510 | — | September 30, 2026 |
| 14 | BlackRock Capital Allocation Term ord | 0.17% | 179K | $720,971 | — | June 30, 2026 |
| 15 | TD Canadian Small Cap Equity - I | 0.16% | 173K | $697,190 | — | June 30, 2026 |
| 16 | IG Mackenzie North American Equity C | 0.16% | 166K | $667,650 | — | July 31, 2026 |
| 17 | Scotia Wealth Cdn Value Pool F | 0.15% | 158K | $636,389 | +30,000 (+23.5%) | June 30, 2026 |
| 18 | iShares US Infrastructure ETF | 0.15% | 155K | $623,788 | — | September 30, 2026 |
| 19 | IG Mackenzie Dividend C | 0.13% | 141K | $566,779 | — | July 31, 2026 |
| 20 | BlackRock Global Allocation V.I. I | 0.12% | 130K | $525,597 | — | July 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ASTL shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ASTL
Institutional investors own 71.8% of Algoma Steel's shares and insiders 5.04%. The largest holder is Maple Rock Capital Partners, Inc. with 15.96% of the shares (16.9M), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 6 reduced their stake in the latest filings. Short interest is 5.79% of the float, or 5.70 days of average trading volume. The share count fell 79.0% since 2012.
Related: ASTL analyst forecast, ASTL key metrics, ASTL dividend history. See the ASTL stock overview for the latest quote and news.
ASTL ownership FAQ
Who owns the most Algoma Steel stock?
The largest shareholders of Algoma Steel are Maple Rock Capital Partners, Inc. (15.96%), Mmcap International Inc. Spc (10.37%), Donald Smith & Co Inc (4.99%), BlackRock Inc (3.92%), Scheer, Rowlett & Assoc Invest Mgmt Ltd. (3.64%).
What percentage of Algoma Steel is owned by institutions?
Institutions hold 71.8% of Algoma Steel's shares outstanding; insiders hold 5.04%.
Which funds own Algoma Steel?
The largest fund holders of Algoma Steel are Aegis Value I (1.63%), BlackRock Strategic Income Opps Instl (1.18%), FaithLife Cdn Equity (Value) (0.78%), BlackRock Global Allocation Instl (0.52%), iA Cdn Eq Sm Cap (iA) SRP7575P500F (0.52%).
What is Algoma Steel's short interest?
4.6M shares of Algoma Steel were sold short, 5.79% of the float; at the average daily volume it would take 5.70 days to cover.
How many shares of Algoma Steel are outstanding?
Algoma Steel has 105.7M shares outstanding, of which 70.5M are in the public float.