Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 40-F filed 2026-03-12, as of 2025-12-31)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | ASTL · NASDAQ | 104,933,802 | 72,117,887 | 68.7% | 95 | 015658107 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (20 of 20 · 015658115)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | CDC Financial, Inc. | 4,153,996 | — | $125K | — |
| 2 | LMR Partners LLP | 2,808,732 | — | $84K | — |
| 3 | ARISTEIA CAPITAL, L.L.C. | 810,424 | — | $26K | — |
| 4 | K2 PRINCIPAL FUND, L.P. | 690,879 | — | $35K | — |
| 5 | D. E. Shaw & Co., Inc. | 557,746 | — | $19K | — |
| 6 | Aequim Alternative Investments LP | 414,191 | — | $14K | — |
| 7 | WOLVERINE ASSET MANAGEMENT LLC | 229,858 | — | $7K | NEW |
| 8 | StoneX Group Inc. | 207,927 | — | $9K | +138,618 (+200.0%) |
| 9 | BOOTHBAY FUND MANAGEMENT, LLC | 185,000 | — | $749K | — |
| 10 | Virtu Financial LLC | 164,870 | — | $6K | +72,863 (+79.2%) |
| 11 | TORONTO DOMINION BANK | 119,621 | — | $4K | +12,521 (+11.7%) |
| 12 | Claret Asset Management Corp | 102,000 | — | $3K | — |
| 13 | JANE STREET GROUP, LLC | 100,764 | — | $3K | +2,607 (+2.7%) |
| 14 | Caption Management, LLC | 44,550 | — | $1K | — |
| 15 | NATIONAL BANK OF CANADA /FI/ | 40,982 | — | $167K | +14,600 (+55.3%) |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 30,310 | — | $1K | +8,316 (+37.8%) |
| 17 | ROYAL BANK OF CANADA | 17,427 | — | $1K | -31,516 (-64.4%) |
| 18 | LPL Financial LLC | 12,100 | — | $363 | — |
| 19 | UBS Group AG | 4,038 | — | $121 | +2,959 (+274.2%) |
| 20 | Clear Street Group Inc. | 100 | — | $3 | — |
Exited since 2026-03-31 (1 filers; largest 1 shown)
| Saba Capital Management, L.P. | −10,200 |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| MM Asset Management Inc. | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 10,954,738 | 10.4% |
| MMCAP International Inc. SPC | SCHEDULE 13G/A | 2026-08-14 | 2026-06-30 | 10,954,738 | 10.4% |
| DSCO Value Fund, L.P. | SCHEDULE 13G | 2026-08-11 | 2026-06-30 | 5,277,631 | 5% |
| DONALD SMITH & CO., INC. | SCHEDULE 13G | 2026-08-11 | 2026-06-30 | 5,277,631 | 5% |
| Xavier Majic | SCHEDULE 13G/A | 2026-05-15 | 2026-03-31 | 15,930,818 | 15.1% |
| Maple Rock Capital Partners Inc. | SCHEDULE 13G/A | 2026-05-15 | 2026-03-31 | 15,930,818 | 15.1% |
| Atlas Tube Canada ULC | SCHEDULE 13D/A | 2025-09-23 | 2025-09-10 | 3,229,998 | 3.08% |
| Zekelman Industries, Inc. | SCHEDULE 13D/A | 2025-09-23 | 2025-09-10 | 3,229,998 | 3.08% |
| Majic Xavier | SCHEDULE 13D/A | 2025-08-14 | 2025-08-12 | 10,430,818 | 9.9% |
| Drake Helix Holdings, LLC | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 381,522 | 0.4% |
| CDC Financial, Inc. | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 5,848,780 | 5.4% |
| Stoney Lonesome HF LP | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 5,467,258 | 5.1% |
| COGHILL CLINT D | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 5,864,050 | 5.4% |
| COGHILL CAPITAL MANAGEMENT LLC | SCHEDULE 13G/A | 2025-08-14 | 2025-06-30 | 5,467,258 | 5.1% |
| BlackRock, Inc. | SCHEDULE 13G/A | 2025-04-29 | 2025-03-31 | 3,835,939 | 3.7% |
| Clint Coghill | SCHEDULE 13G | 2025-04-10 | 2025-04-04 | 15,270 | 0% |
| The Drake Helix Holdings, LLC | SCHEDULE 13G | 2025-04-10 | 2025-04-04 | 366,522 | 0.3% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.