CO-DIAGNOSTICS INC CODX
COM · Common Stock · CUSIP 189763204
- SectorHealth care
- IndustrySurgical & Medical Instruments & Apparatus
- HeadquartersSalt Lake City, UT
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 6.3m as of 2026-08-11, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.10.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2025 | 2 |
| Q1 2026 | 14 |
| Q2 2026 | 24 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2026 | 11 | 2 |
| Q2 2026 | 15 | 4 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $32.7k | $0 | 0.00 |
| Q2 2026 | $0 | $0 | — |
Biggest buyers
| ARMISTICE CAPITAL, LLC | New | +236.0k |
| JANE STREET GROUP, LLC | New | +89.2k |
| VANGUARD CAPITAL MANAGEMENT LLC | New | +58.3k |
| MILLENNIUM MANAGEMENT LLC | New | +32.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | +31.2k |
| GEODE CAPITAL MANAGEMENT, LLC | New | +25.6k |
| VANGUARD FIDUCIARY TRUST CO | Added | +19.8k |
| Virtu Financial LLC | New | +17.6k |
| STATE STREET CORP | New | +14.8k |
| RENAISSANCE TECHNOLOGIES LLC | New | +12.5k |
Biggest sellers
| Private Advisory Group LLC | Reduced | -2.0k |
| JPMORGAN CHASE & CO | Reduced | -47 |
| DANSKE BANK A/S | Sold out | -7 |
| CITIGROUP INC | Sold out | -1 |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| ARMISTICE CAPITAL, LLC 13G · institution new · filed 2026-08-14 | 10.0% |
Fell to 5% or below in the last year: JANE STREET GROUP, LLC (1.7%, 2026-08-10)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| ARMISTICE CAPITAL, LLC 0.02% of their portfolio | 236.0k $731.6k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 89.2k $276.6k | New |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 58.3k $180.7k | New |
| Private Advisory Group LLC 0.01% of their portfolio | 39.4k $122.1k | Reduced -2.0k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 32.0k $99.2k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 31.2k $96.8k | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 25.6k $79.3k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 19.8k $61.3k | Added +19.8k |
| Virtu Financial LLC 0.00% of their portfolio | 17.6k $55.0k | New |
| UBS Group AG 0.00% of their portfolio | 16.1k $49.9k | Added +8.7k |
| STATE STREET CORP 0.00% of their portfolio | 14.8k $45.9k | New |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 12.5k $38.8k | New |
| MORGAN STANLEY 0.00% of their portfolio | 2.9k $8.9k | Added +2.8k |
| Smartleaf Asset Management LLC 0.00% of their portfolio | 133 $396 | Unchanged |
| Global Retirement Partners, LLC 0.00% of their portfolio | 100 $310 | First filing |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 81 $251 | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 81 $251 | Added +23 |
| Heritage Wealth Advisors 0.00% of their portfolio | 17 $53 | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 10 $31 | Unchanged |
| FMR LLC 0.00% of their portfolio | 7 $21 | New |
| NewEdge Advisors, LLC 0.00% of their portfolio | 6 $19 | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 3 $9 | Reduced -47 |
| HARBOUR INVESTMENTS, INC. 0.00% of their portfolio | 2 $6 | Unchanged |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 1 $3 | New |