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 10-K filed 2026-09-23, as of 2026-09-23)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | AMST · NASDAQ | 6,549,851 | 392,414 | 6.0% | 13 | 031094204 |
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 (13 of 13 · 031094204)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Focus Partners Wealth | 167,376 | 2.56% | $223K | +1,360 (+0.8%) |
| 2 | GOLDMAN SACHS GROUP INC | 59,423 | 0.91% | $79K | NEW |
| 3 | GEODE CAPITAL MANAGEMENT, LLC | 32,682 | 0.50% | $43K | -20,897 (-39.0%) |
| 4 | STATE STREET CORP | 31,595 | 0.48% | $42K | — |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 30,201 | 0.46% | $40K | — |
| 6 | Warberg Asset Management LLC | 14,287 | 0.22% | $19K | NEW |
| 7 | VANGUARD FIDUCIARY TRUST CO | 13,761 | 0.21% | $18K | — |
| 8 | JANE STREET GROUP, LLC | 12,760 | 0.19% | $17K | NEW |
| 9 | RENAISSANCE TECHNOLOGIES LLC | 10,100 | 0.15% | $13K | NEW |
| 10 | OSAIC HOLDINGS, INC. | 10,000 | 0.15% | $13K | — |
| 11 | Tower Research Capital LLC (TRC) | 4,133 | 0.06% | $5K | +2,382 (+136.0%) |
| 12 | UBS Group AG | 3,392 | 0.05% | $5K | +713 (+26.6%) |
| 13 | ROYAL BANK OF CANADA | 2,704 | 0.04% | $4K | +2,679 (+10716.0%) |
Exited since 2026-03-31 (4 filers; largest 4 shown)
| XTX Topco Ltd | −10,153 |
| JPMORGAN CHASE & CO | −5,904 |
| Caitong International Asset Management Co., Ltd | −3 |
| CITIGROUP INC | −1 |
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 |
|---|---|---|---|---|---|
| Daniel B. Asher | SCHEDULE 13G | 2026-05-01 | 2026-04-27 | 293,575 | 4.99% |
| Intracoastal Capital LLC | SCHEDULE 13G | 2026-05-01 | 2026-04-27 | 293,575 | 4.99% |
| Mitchell P. Kopin | SCHEDULE 13G | 2026-05-01 | 2026-04-27 | 293,575 | 4.99% |
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.