Co-Diagnostics, Inc. (CODX) Ownership
CODX ownership summary
as of October 17, 2026- Institutions
- 9.6% of shares outstanding
- Insiders
- 1.89% of shares outstanding
- Shares outstanding
- 7.0M
- Float
- 6.1M shares available to trade
- Short interest
- 6.10% 419K shares short
- Days to cover
- 1.73 short interest up 37.4% vs prior month
- Institutions 9.61%
- Insiders 1.89%
- Other investors 88.50%
CODX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Armistice Capital, LLC | 3.38% | 236K | $154,344 | +236,000 (0.0%) | June 30, 2026 |
| 2 | Jane Street Group LLC | 1.28% | 89K | $58,363 | +89,240 (0.0%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 0.83% | 58K | $38,112 | +58,275 (0.0%) | June 30, 2026 |
| 4 | Private Asset Group LLC | 0.56% | 39K | $25,759 | −2,000 (−4.8%) | June 30, 2026 |
| 5 | Millennium Management LLC | 0.46% | 32K | $20,925 | +31,995 (0.0%) | June 30, 2026 |
| 6 | Susquehanna International Group, LLP | 0.45% | 31K | $20,430 | +31,239 (0.0%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 0.37% | 26K | $16,726 | +25,575 (0.0%) | June 30, 2026 |
| 8 | Vanguard Fiduciary Trust Co | 0.28% | 20K | $12,934 | +19,775 (+1,977,500.0%) | June 30, 2026 |
| 9 | Virtu Financial LLC | 0.25% | 18K | $11,518 | +17,612 (0.0%) | June 30, 2026 |
| 10 | UBS Group AG | 0.23% | 16K | $10,524 | +8,723 (+118.4%) | June 30, 2026 |
| 11 | State Street Corp | 0.21% | 15K | $9,679 | +14,800 (0.0%) | June 30, 2026 |
| 12 | Renaissance Technologies Corp | 0.18% | 12K | $8,175 | +12,500 (0.0%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 0.04% | 2,877 | $1,882 | +2,789 (+3,169.3%) | June 30, 2026 |
| 14 | Global Retirement Partners, LLC. | <0.01% | 100 | $65 | — | June 30, 2026 |
| 15 | Wells Fargo & Co | <0.01% | 81 | $53 | — | June 30, 2026 |
| 16 | SBI Securities Co Ltd | <0.01% | 81 | $53 | +23 (+39.7%) | June 30, 2026 |
| 17 | Heritage Wealth Advisors, LLC | <0.01% | 17 | $11 | — | June 30, 2026 |
| 18 | Western Wealth Management, LLC | <0.01% | 17 | $11 | +17 (0.0%) | March 31, 2026 |
| 19 | Advisor Group Holdings, Inc. | <0.01% | 10 | $7 | — | June 30, 2026 |
| 20 | FMR Inc | <0.01% | 7 | $5 | +7 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 549K shares and 1 cut 2,000.
CODX top mutual fund and ETF holders
3 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.47% | 33K | $21,577 | +13,985 (+73.6%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.09% | 6,567 | $4,295 | — | August 31, 2026 |
| 3 | Fidelity Total Market Index | 0.06% | 4,336 | $2,836 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CODX insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2023-03-20 | Brian Lee Brown | Buy | $57.00 | 100 | $5,700 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
CODX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CODX
Institutional investors own 9.6% of Co-Diagnostics's shares and insiders 1.89%. The largest holder is Armistice Capital, LLC with 3.38% of the shares (236K), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 1 reduced their stake in the latest filings. Short interest is 6.10% of the float, or 1.73 days of average trading volume. The share count rose 321.3% since 2015.
Related: CODX analyst forecast, CODX key metrics. See the CODX stock overview for the latest quote and news.
CODX ownership FAQ
Who owns the most Co-Diagnostics stock?
The largest shareholders of Co-Diagnostics are Armistice Capital, LLC (3.38%), Jane Street Group LLC (1.28%), Vanguard Capital Management, LLC (0.83%), Private Asset Group LLC (0.56%), Millennium Management LLC (0.46%).
What percentage of Co-Diagnostics is owned by institutions?
Institutions hold 9.6% of Co-Diagnostics's shares outstanding; insiders hold 1.89%.
Which funds own Co-Diagnostics?
The largest fund holders of Co-Diagnostics are Fidelity Extended Market Index (0.47%), Fidelity Series Total Market Index (0.09%), Fidelity Total Market Index (0.06%).
What is Co-Diagnostics's short interest?
419K shares of Co-Diagnostics were sold short, 6.10% of the float; at the average daily volume it would take 1.73 days to cover.
Are insiders buying or selling Co-Diagnostics?
Of the latest 1 reported insider transactions in Co-Diagnostics (since March 20, 2023), 1 were purchases and 0 were sales.
How many shares of Co-Diagnostics are outstanding?
Co-Diagnostics has 7.0M shares outstanding, of which 6.1M are in the public float.