Who owns ASTL
Which tracked institutional funds hold ASTL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASTL company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-17). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
16 tracked funds added or opened ASTL while 20 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ASTL’s largest tracked holder by dollar value, Maple Rock Capital Partners Inc., sizes it at 1.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ASTL divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 91 tracked filers holding ASTL, 40 increased or opened the position and 52 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ASTL between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 3
- BRIGHTLINE CAPITAL MANAGEMENT, LLC$7M
- MARSHALL WACE, LLP$2M
- Jump Financial, LLC$1M
Full exits 3
- Solas Capital Management, LLC$4M
- HRT FINANCIAL LP$2M
- CenterBook Partners LP$964K
Largest adds
- MORGAN STANLEY$6M
- MACKENZIE FINANCIAL CORP$5M
- TWO SIGMA INVESTMENTS, LP$3M
- Maple Rock Capital Partners Inc.$2M
- Scheer, Rowlett & Associates Investment Management Ltd.$2M
- JPMORGAN CHASE & CO$2M
Largest trims
- MMCAP International Inc. SPC$9M
- LITTLEJOHN & CO LLC$8M
- DONALD SMITH & CO., INC.$4M
- JANE STREET GROUP, LLC$3M
- LM Asset Management Inc.$3M
- MILLENNIUM MANAGEMENT LLC$2M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Maple Rock Capital Partners Inc. added | 16,861,818 | $68M | 18.0% | 2026-Q2 |
| MMCAP International Inc. SPC trimmed | 10,954,738 | $44M | 11.7% | 2026-Q2 |
| DONALD SMITH & CO., INC. trimmed | 5,277,631 | $21M | 5.6% | 2026-Q2 |
| BlackRock, Inc. added | 4,143,265 | $17M | 4.4% | 2026-Q2 |
| Scheer, Rowlett & Associates Investment Management Ltd. added | 3,846,390 | $16M | 4.1% | 2026-Q2 |
| MORGAN STANLEY added | 2,958,350 | $12M | 3.2% | 2026-Q2 |
| AEGIS FINANCIAL CORP | 1,786,122 | $7M | 1.9% | 2026-Q2 |
| CDC Financial, Inc. added | 1,745,647 | $7M | 1.9% | 2026-Q2 |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC new | 1,660,000 | $7M | 1.8% | 2026-Q2 |
| LITTLEJOHN & CO LLC trimmed | 1,518,714 | $6M | 1.6% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 1,387,320 | $6M | 1.5% | 2026-Q2 |
| Sourcerock Group LLC trimmed | 1,247,507 | $5M | 1.3% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 1,329,806 | $5M | 1.3% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,041,811 | $4M | 1.1% | 2026-Q2 |
| LM Asset Management Inc. trimmed | 1,016,000 | $4M | 1.1% | 2026-Q2 |
| Bracebridge Capital, LLC | 924,931 | $4M | 1.0% | 2026-Q2 |
| JB CAPITAL PARTNERS LP | 872,277 | $4M | 0.9% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 845,935 | $3M | 0.9% | 2026-Q2 |
| Bain Capital Credit, LP | 825,777 | $3M | 0.9% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 810,208 | $3M | 0.9% | 2026-Q2 |
| Ewing Morris & Co. Investment Partners Ltd. added | 722,350 | $3M | 0.8% | 2026-Q2 |
| Quadrature Capital Ltd trimmed | 682,493 | $3M | 0.7% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 670,373 | $3M | 0.7% | 2026-Q2 |
| TCW GROUP INC trimmed | 607,478 | $2M | 0.7% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 575,225 | $2M | 0.6% | 2026-Q2 |
| TD Asset Management Inc trimmed | 498,279 | $2M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP new | 499,494 | $2M | 0.5% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 471,288 | $2M | 0.5% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 463,228 | $2M | 0.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 438,431 | $2M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 418,754 | $2M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 386,942 | $2M | 0.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 356,116 | $1M | 0.4% | 2026-Q2 |
| BARCLAYS PLC added | 308,972 | $1M | 0.3% | 2026-Q2 |
| Voleon Capital Management LP added | 307,297 | $1M | 0.3% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 288,488 | $1M | 0.3% | 2026-Q2 |
| Jump Financial, LLC added | 289,675 | $1M | 0.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 264,994 | $1M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 149,303 | $604K | 0.2% | 2026-Q2 |
| Quinn Opportunity Partners LLC | 142,336 | $576K | 0.2% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 125,725 | $509K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 122,662 | $497K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 116,242 | $471K | 0.1% | 2026-Q2 |
| Summit Financial, LLC | 110,333 | $447K | 0.1% | 2026-Q2 |
| Quantbot Technologies LP trimmed | 109,199 | $442K | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 101,746 | $412K | 0.1% | 2026-Q2 |
| SIG North Trading, ULC trimmed | 96,117 | $389K | 0.1% | 2026-Q2 |
| Boston Partners added | 88,825 | $360K | 0.1% | 2026-Q2 |
| PDT Partners, LLC added | 73,079 | $296K | 0.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 71,194 | $288K | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 67,859 | $275K | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 56,526 | $229K | 0.1% | 2026-Q2 |
| Terril Brothers, Inc. trimmed | 54,000 | $219K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 53,267 | $214K | 0.1% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 52,687 | $213K | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 50,800 | $207K | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 42,054 | $170K | 0.0% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 41,806 | $169K | 0.0% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 41,049 | $166K | 0.0% | 2026-Q2 |
| Phoenix Financial Ltd. | 35,714 | $145K | 0.0% | 2026-Q2 |
| Lavaca Capital LLC new | 35,573 | $144K | 0.0% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd trimmed | 35,549 | $144K | 0.0% | 2026-Q2 |
| GROUP ONE TRADING LLC trimmed | 34,896 | $141K | 0.0% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 31,881 | $129K | 0.0% | 2026-Q2 |
| NewEdge Advisors, LLC trimmed | 27,899 | $113K | 0.0% | 2026-Q2 |
| Verition Fund Management LLC | 26,803 | $109K | 0.0% | 2026-Q2 |
| Olympiad Research LP added | 25,736 | $104K | 0.0% | 2026-Q2 |
| CIBC WORLD MARKET INC. trimmed | 25,300 | $102K | 0.0% | 2026-Q2 |
| FIL Ltd trimmed | 22,908 | $93K | 0.0% | 2026-Q2 |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 21,773 | $88K | 0.0% | 2026-Q2 |
| Net Worth Advisory Group trimmed | 20,833 | $84K | 0.0% | 2026-Q2 |
| Federation des caisses Desjardins du Quebec | 18,360 | $74K | 0.0% | 2026-Q2 |
| Corient Private Wealth LP | 15,000 | $61K | 0.0% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 11,223 | $45K | 0.0% | 2026-Q2 |
| Aquatic Capital Management LLC trimmed | 11,173 | $45K | 0.0% | 2026-Q2 |
| EJF Capital LP | 11,000 | $45K | 0.0% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 10,000 | $41K | 0.0% | 2026-Q2 |
| ELEMENT POINTE ADVISORS, LLC | 10,000 | $40K | 0.0% | 2026-Q2 |
| UBS Group AG trimmed | 8,294 | $34K | 0.0% | 2026-Q2 |
| CITIGROUP INC added | 6,849 | $28K | 0.0% | 2026-Q2 |
| TD Waterhouse Canada Inc. added | 6,700 | $26K | 0.0% | 2026-Q2 |
| Aviso Financial Inc. added | 6,164 | $25K | 0.0% | 2026-Q2 |
| ASSETMARK, INC | 2,500 | $10K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. trimmed | 1,682 | $7K | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP new | 878 | $4K | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd trimmed | 128 | $518 | 0.0% | 2026-Q2 |
| Physician Wealth Advisors, Inc. new | 111 | $450 | 0.0% | 2026-Q2 |
| Arlington Trust Co LLC | 100 | $405 | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 78 | $316 | 0.0% | 2026-Q2 |
| Basepoint Wealth LLC | 51 | $208 | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 50 | $203 | 0.0% | 2026-Q2 |
| Solas Capital Management, LLC trimmed | 1,047,454 | $4M | 1.1% | 2026-Q1 stale (1 quarter behind) |
| INVESCO SENIOR SECURED MANAGEMENT INC /ADV | 3,233,117 | $18M | 4.8% | 2025-Q4 stale (2 quarters behind) |
| GOLDENTREE ASSET MANAGEMENT LP | 2,493,548 | $10M | 2.7% | 2025-Q4 stale (2 quarters behind) |
| FMR LLC trimmed | 2,208,646 | $9M | 2.4% | 2025-Q4 stale (2 quarters behind) |
| J. Goldman & Co LP added | 2,263,011 | $8M | 2.1% | 2025-Q3 stale (3 quarters behind) |
| CONTRARIAN CAPITAL MANAGEMENT, L.L.C. trimmed | 2,037,686 | $7M | 1.9% | 2025-Q3 stale (3 quarters behind) |
| INTACT INVESTMENT MANAGEMENT INC. added | 2,007,006 | $14M | 3.7% | 2025-Q2 stale (4 quarters behind) |
| TOWLE & CO trimmed | 1,463,161 | $10M | 2.7% | 2025-Q2 stale (4 quarters behind) |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 1,134,086 | $8M | 2.1% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.