MarketPeel
Insider Trading Intelligence
JN

James B. Nelson

CODX
DIRECTOR · CO-DIAGNOSTICS, INC. · CIK 0001589502
FILING MIX · LIFETIME57%/43%
BUYS
16
SELLS
12
TOTAL VALUE
$126.6K
COMPANIES
1
ACTIVE SINCE
Jan 2021
HOLDINGS NOW
4,000
AVG SELL PX
$10.13
TRADE KIND
SHOWING 28 / 28
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by James B. Nelson, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+0.00%+18.07%+1.08%+17.00%+17.00%
14d2+0.00%+30.49%-1.42%+31.90%+31.90%
30d2+0.00%+68.72%+3.38%+65.34%+65.34%
60d2+0.00%+36.25%+4.37%+31.87%+31.87%
90d2+100.00%-5.26%+9.06%-14.33%-14.33%
180d2+100.00%-19.46%+15.84%-35.30%-35.30%
1y2+100.00%-11.92%+23.95%-35.86%-35.86%
2y2+100.00%-70.51%+8.06%-78.56%-78.56%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CODX · 4,000 shares · as of May 23, 2026
067,292134,583201,875269,16620222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 16 buys / 12 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
1,69510,668May 23, 2026May 27, 2026View →
CODX
CO-DIAGNOSTICS, INC.
SALE
1,6954,000May 23, 2026May 27, 2026View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
57,499269,166Nov 23, 2025Nov 24, 2025View →
CODX
CO-DIAGNOSTICS, INC.
SALE
57,499170,834Nov 23, 2025Nov 24, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
125,000228,333Aug 13, 2025Aug 15, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
48,334211,667May 23, 2025May 27, 2025View →
CODX
CO-DIAGNOSTICS, INC.
SALE
48,334103,333May 23, 2025May 27, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
48,333163,333Nov 23, 2024Nov 25, 2024View →
CODX
CO-DIAGNOSTICS, INC.
SALE
48,333151,667Nov 23, 2024Nov 25, 2024View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
30,000115,000May 23, 2024May 28, 2024View →
CODX
CO-DIAGNOSTICS, INC.
SALE
30,000200,000May 23, 2024May 28, 2024View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
110,000230,000Apr 26, 2024Apr 29, 2024View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
30,00085,000Nov 23, 2023Nov 27, 2023View →
CODX
CO-DIAGNOSTICS, INC.
SALE
30,000120,000Nov 23, 2023Nov 27, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
70,000150,000Jun 12, 2023Jun 13, 2023View →
CODX
CO-DIAGNOSTICS, INC.
SALE
18,33380,000May 23, 2023May 24, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
18,33355,000May 23, 2023May 24, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
40,00098,333Jan 17, 2023Jan 17, 2023View →
CODX
CO-DIAGNOSTICS, INC.
SALE
12,50058,333Jan 8, 2023Jan 9, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
12,50036,667Jan 8, 2023Jan 9, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
11,66724,167Nov 23, 2022Nov 23, 2022View →
CODX
CO-DIAGNOSTICS, INC.
SALE
11,66770,833Nov 23, 2022Nov 23, 2022View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
70,00082,500Jul 11, 2022Jul 12, 2022View →
CODX
CO-DIAGNOSTICS, INC.
SALE
12,50012,500Jan 8, 2022Jan 10, 2022View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
12,50012,500Jan 8, 2022Jan 10, 2022View →
CODX
CO-DIAGNOSTICS, INC.
SALE
11,900$10.13$120.5K600Jan 13, 2021Jan 15, 2021View →
CODX
CO-DIAGNOSTICS, INC.
SALE
600$10.14$6.1K0Jan 13, 2021Jan 15, 2021View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
37,50037,500Jan 7, 2021Jan 8, 2021View →
Other insiders · CODX
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About this filer
CIK 0001589502
ROLE
Director
PRIMARY
CODX
COMPANIES
1
ACTIVE SINCE
Jan 2021
MARKETPEEL · /INSIDER/0001589502DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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