MarketPeel
Insider Trading Intelligence
RS

Richard S. Serbin

CODX
DIRECTOR · CO-DIAGNOSTICS, INC. · CIK 0001296764
FILING MIX · LIFETIME56%/44%
BUYS
22
SELLS
17
TOTAL VALUE
$1.30M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
4,000
AVG SELL PX
$15.42
TRADE KIND
SHOWING 39 / 39
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
5 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Richard S. Serbin, 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
7d5+60.00%+2.72%+2.16%+0.56%-5.86%
14d5+80.00%-2.57%+1.25%-3.82%-11.53%
30d5+40.00%+10.64%+2.81%+7.82%+4.02%
60d5+20.00%+29.11%+7.57%+21.54%+19.46%
90d5+80.00%-8.95%+12.99%-21.94%-32.82%
180d5+100.00%-28.89%+20.02%-48.91%-53.13%
1y5+100.00%-39.77%+35.60%-75.38%-94.68%
2y5+100.00%-71.43%+28.14%-99.57%-109.62%
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
067,917135,833203,750271,666202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 22 buys / 17 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
1,69510,751May 23, 2026May 27, 2026View →
CODX
CO-DIAGNOSTICS, INC.
SALE
1,6954,000May 23, 2026May 27, 2026View →
CODX
CO-DIAGNOSTICS, INC.
SALE
57,499170,834Nov 23, 2025Nov 24, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
57,499271,666Nov 23, 2025Nov 24, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
125,000228,333Aug 13, 2025Aug 15, 2025View →
CODX
CO-DIAGNOSTICS, INC.
SALE
48,334103,333May 23, 2025May 27, 2025View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
48,334214,167May 23, 2025May 27, 2025View →
CODX
CO-DIAGNOSTICS, INC.
SALE
48,333151,667Nov 23, 2024Nov 25, 2024View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
48,333165,833Nov 23, 2024Nov 25, 2024View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
30,000117,500May 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 26, 2024View →
CODX
CO-DIAGNOSTICS, INC.
SALE
30,000120,000Nov 23, 2023Nov 27, 2023View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
30,00087,500Nov 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
18,33357,500May 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
12,50039,167Jan 8, 2023Jan 9, 2023View →
CODX
CO-DIAGNOSTICS, INC.
SALE
11,66770,833Nov 23, 2022Nov 23, 2022View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
11,66726,667Nov 23, 2022Nov 23, 2022View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
70,00082,500Jul 11, 2022Jul 12, 2022View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
12,50015,000Jan 8, 2022Jan 10, 2022View →
CODX
CO-DIAGNOSTICS, INC.
SALE
12,50012,500Jan 8, 2022Jan 10, 2022View →
CODX
CO-DIAGNOSTICS, INC.
SALE
10,000$10.29$102.9K2,500Jan 14, 2021Jan 15, 2021View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
37,50037,500Jan 7, 2021Jan 8, 2021View →
CODX
CO-DIAGNOSTICS, INC.
SALE
17,000$10.10$171.7K0Dec 14, 2020Dec 15, 2020View →
CODX
CO-DIAGNOSTICS, INC.
SALE
17,0000Nov 23, 2020Nov 24, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASE
17,00017,000Nov 23, 2020Nov 24, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
17,00017,000Nov 23, 2020Nov 24, 2020View →
CODX
CO-DIAGNOSTICS, INC.
SALE
7,500$18.00$135.0K0May 28, 2020Jun 5, 2020View →
CODX
CO-DIAGNOSTICS, INC.
SALE
17,500$18.03$315.5K0May 28, 2020Jun 5, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASE
25,0000May 28, 2020Jun 5, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASE
25,000$3.96$99.0K25,000May 28, 2020Jun 5, 2020View →
CODX
CO-DIAGNOSTICS, INC.
SALE
25,0000May 19, 2020May 21, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASE
25,000$0.71$17.8K25,000May 19, 2020May 21, 2020View →
CODX
CO-DIAGNOSTICS, INC.
SALE
25,000$18.50$462.5K0May 19, 2020Jun 5, 2020View →
CODX
CO-DIAGNOSTICS, INC.
PURCHASEGRANT
Stock grant
25,00025,000Feb 10, 2020Jun 5, 2020View →
Other insiders · CODX
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About this filer
CIK 0001296764
ROLE
Director
PRIMARY
CODX
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001296764DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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