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 2026-08-13, as of 2026-08-11)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | CODX · NASDAQ | 6,252,319 | 595,808 | 9.5% | 24 | 189763204 |
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 (24 of 24 · 189763204)
change vs 2026-03-31Exited since 2026-03-31 (2 filers; largest 2 shown)
| DANSKE BANK A/S | −7 |
| 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 |
|---|---|---|---|---|---|
| Armistice Capital, LLC | SCHEDULE 13G | 2026-08-14 | 2026-06-30 | 559,706 | 9.99% |
| Steven Boyd | SCHEDULE 13G | 2026-08-14 | 2026-06-30 | 559,706 | 9.99% |
| Jane Street Capital, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 30,543 | 0.6% |
| Jane Street Global Trading, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 58,697 | 1.1% |
| JANE STREET GROUP, LLC | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 89,240 | 1.7% |
| Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B | SCHEDULE 13G/A | 2026-02-11 | 2025-12-31 | 0 | 0% |
| Ayrton Capital LLC | SCHEDULE 13G/A | 2026-02-11 | 2025-12-31 | 0 | 0% |
| Waqas Khatri | SCHEDULE 13G/A | 2026-02-11 | 2025-12-31 | 0 | 0% |
| Orca Capital AG | SCHEDULE 13G/A | 2025-10-30 | 2025-10-28 | 2,248,182 | 3.7% |
| The Vanguard Group | SCHEDULE 13G/A | 2025-10-30 | 2025-09-30 | 1,705,952 | 3.54% |
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.