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-Q filed 2026-08-06, as of 2026-08-03)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | AAOI · NASDAQ | 84,569,237 | 51,133,552 | 60.5% | 484 | 03823U102 |
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 (9 of 9 · 03823UAF9)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Linden Advisors LP | 46,791,000 | — | $165.5M | NEW |
| 2 | D. E. Shaw & Co., Inc. | 23,089,000 | — | $82.6M | NEW |
| 3 | LAZARD ASSET MANAGEMENT LLC | 14,132,000 | — | $504K | NEW |
| 4 | Graham Capital Management, L.P. | 14,006,000 | — | $49.9M | NEW |
| 5 | BNP PARIBAS FINANCIAL MARKETS | 13,458,000 | — | $47.7M | NEW |
| 6 | Context Capital Management, LLC | 1,948,000 | — | $6.9M | NEW |
| 7 | FMR LLC | 1,770,000 | — | $6.3M | NEW |
| 8 | AGF MANAGEMENT LTD | 450,000 | — | $1.6M | NEW |
| 9 | LORD, ABBETT & CO. LLC | 446,000 | — | $1.6M | NEW |
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 |
|---|---|---|---|---|---|
| Jane Street Singapore Pte. Ltd | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 228 | 0% |
| JANE STREET GROUP, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 1,952,757 | 2.4% |
| Jane Street Global Trading, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 1,194 | 0% |
| Jane Street Capital, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 1,951,335 | 2.4% |
| Jane Street Options, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| BlackRock, Inc. | SCHEDULE 13G/A | 2026-07-27 | 2026-06-30 | 4,342,797 | 5.4% |
| Marex Group plc | SCHEDULE 13G | 2026-05-13 | 2026-05-08 | 4,486,292 | 5.6% |
| Marex Securities Products Inc. | SCHEDULE 13G | 2026-05-13 | 2026-05-08 | 4,486,292 | 5.6% |
| Invesco Ltd. | SCHEDULE 13G/A | 2026-05-06 | 2026-03-31 | 2,014,405 | 2.7% |
| The Vanguard Group | SCHEDULE 13G/A | 2026-03-26 | 2026-03-13 | 0 | 0% |
| JPMORGAN CHASE & CO. | SCHEDULE 13G/A | 2025-11-04 | 2025-10-31 | 2,800,882 | 4.4% |
| David E. Shaw | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 2,239,337 | 4.2% |
| D. E. Shaw & Co., L.P. | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 2,239,337 | 4.2% |
| D. E. Shaw & Co., L.L.C. | SCHEDULE 13G/A | 2025-05-15 | 2025-03-31 | 2,238,069 | 4.2% |
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.