Vault-13

CO-DIAGNOSTICS INC CODX

COM · Common Stock · CUSIP 189763204

24 institutional holders +10 vs Q1 2026
595,808595.8k shares reported held*
9.5% of all shares outstanding*
$1.8mreported value*
11 new 4 added 2 reduced 2 sold out net bought ≈ $1.7m (+546.5k shares)

* 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

0102030Q4 25: 2Q1 26: 14Q2 26: 2424Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q4 20252
Q1 202614
Q2 202624

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q1 26: 11 bought or addedQ1 26: 2 cut or sold outQ1 26Q2 26: 15 bought or addedQ2 26: 4 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q1 2026112
Q2 2026154

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10k$20k$30k$40kQ3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $32.7kQ1 26 puts: $0Q1 26P/C 0.00Q2 26 calls: $0Q2 26 puts: $0Q2 26P/C —
Numbers
QuarterCallsPutsP/C
Q3 2025$0$0—
Q4 2025$0$0—
Q1 2026$32.7k$00.00
Q2 2026$0$0—

Biggest buyers

ARMISTICE CAPITAL, LLC New +236,000+236.0k
JANE STREET GROUP, LLC New +89,240+89.2k
VANGUARD CAPITAL MANAGEMENT LLC New +58,275+58.3k
MILLENNIUM MANAGEMENT LLC New +31,995+32.0k
SUSQUEHANNA INTERNATIONAL GROUP, LLP New +31,239+31.2k
GEODE CAPITAL MANAGEMENT, LLC New +25,575+25.6k
VANGUARD FIDUCIARY TRUST CO Added +19,775+19.8k
Virtu Financial LLC New +17,612+17.6k
STATE STREET CORP New +14,800+14.8k
RENAISSANCE TECHNOLOGIES LLC New +12,500+12.5k

Biggest sellers

Private Advisory Group LLC Reduced -2,000-2.0k
JPMORGAN CHASE & CO Reduced -47-47
DANSKE BANK A/S Sold out -7-7
CITIGROUP INC Sold out -1-1

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.

HolderStakeChangeShares Last filed
ARMISTICE CAPITAL, LLC 13G · institution new · filed 2026-08-14 10.0% new 559.7k≈ $1.7m 2026-08-14

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ARMISTICE CAPITAL, LLC 0.02% of their portfolio NEW YORK, NY 236,000236.0k $731.6k $731.6k 0.02% New
2 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 89,24089.2k $276.6k $276.6k 0.00% New
3 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 58,27558.3k $180.7k $180.7k 0.00% New
4 Private Advisory Group LLC 0.01% of their portfolio REDMOND, WA 39,38739.4k $122.1k $122.1k 0.01% Reduced -2.0k -2,000
5 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 31,99532.0k $99.2k $99.2k 0.00% New
6 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 31,23931.2k $96.8k $96.8k 0.00% New
7 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 25,57525.6k $79.3k $79.3k 0.00% New
8 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 19,77619.8k $61.3k $61.3k 0.00% Added +19.8k +19,775
9 Virtu Financial LLC 0.00% of their portfolio New York, NY 17,61217.6k $55.0k $55.0k 0.00% New
10 UBS Group AG 0.00% of their portfolio ZURICH, V8 16,09116.1k $49.9k $49.9k 0.00% Added +8.7k +8,723
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 14,80014.8k $45.9k $45.9k 0.00% New
12 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 12,50012.5k $38.8k $38.8k 0.00% New
13 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 2,8772.9k $8.9k $8.9k 0.00% Added +2.8k +2,789
14 Smartleaf Asset Management LLC 0.00% of their portfolio BOSTON, MA 133133 $396 $396 0.00% Unchanged
15 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 100100 $310 $310 0.00% First filing
16 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 8181 $251 $251 0.00% Unchanged
17 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 8181 $251 $251 0.00% Added +23 +23
18 Heritage Wealth Advisors 0.00% of their portfolio RICHMOND, VA 1717 $53 $53 0.00% Unchanged
19 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1010 $31 $31 0.00% Unchanged
20 FMR LLC 0.00% of their portfolio BOSTON, MA 77 $21 $21 0.00% New
21 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 66 $19 $19 0.00% Unchanged
22 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 33 $9 $9 0.00% Reduced -47 -47
23 HARBOUR INVESTMENTS, INC. 0.00% of their portfolio MADISON, WI 22 $6 $6 0.00% Unchanged
24 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 11 $3 $3 0.00% New