MarketPeel
Pricing
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GB

George Bickerstaff

CDNA
DIRECTOR · CAREDX, INC. · CIK 0001329646
FILING MIX · LIFETIME68%/32%
BUYS
41
SELLS
19
TOTAL VALUE
$5.52M
COMPANIES
2
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
271,268
AVG SELL PX
$44.27
TRADE KIND
SHOWING 60 / 60
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
12 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by George Bickerstaff, 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
7d12+16.67%+4.55%+1.09%+3.46%+3.05%—
14d12+8.33%+8.21%+2.21%+6.01%+6.91%—
30d12+16.67%+18.13%+3.43%+14.70%+17.10%—
60d12+25.00%+13.36%+5.55%+7.80%+7.32%—
90d12+41.67%+6.66%+7.84%-1.19%-2.94%—
180d12+66.67%+3.29%+14.51%-11.22%-12.90%—
1y12+91.67%-22.36%+10.39%-32.75%-60.54%—
2y12(1 pending)+90.91%-61.31%+11.55%-72.86%-92.55%—
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
CDNA · 134,061 shares · as of Aug 5, 2026
038,51577,031115,546154,061202120222023202420252026SHARES 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
2026
FLOW · 41 buys / 19 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CDNA
CAREDX, INC.
SALE
20,000$46.29$925.7K134,061Aug 5, 2026Aug 6, 2026 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
9,795——154,061Jun 12, 2026Jun 16, 2026 ↗View →
CDNA
CAREDX, INC.
PURCHASE
29,136$7.96$231.9K144,266Sep 11, 2025Sep 12, 2025 ↗View →
CDNA
CAREDX, INC.
SALE
29,136——0Sep 11, 2025Sep 12, 2025 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
12,103——115,130Jun 13, 2025Jun 17, 2025 ↗View →
CDNA
CAREDX, INC.
SALE
20,000$18.36$367.1K103,027Mar 10, 2025Mar 12, 2025 ↗View →
CDNA
CAREDX, INC.
SALE
2,226——0Nov 1, 2024Nov 5, 2024 ↗View →
CDNA
CAREDX, INC.
SALE
5,255——0Nov 1, 2024Nov 5, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASE
5,255$5.85$30.7K120,801Nov 1, 2024Nov 5, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASE
2,226$5.49$12.2K123,027Nov 1, 2024Nov 5, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
16,048——16,048Jun 14, 2024Jun 20, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
16,048——16,048Jun 14, 2024Jun 18, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
10,570——115,546Jun 14, 2024Jun 18, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASE
5,255$10.00$52.5K104,976May 14, 2024May 16, 2024 ↗View →
CDNA
CAREDX, INC.
SALE
5,255——0May 14, 2024May 16, 2024 ↗View →
CDNA
CAREDX, INC.
PURCHASE
5,255$5.02$26.4K85,523Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
SALE
5,255——0Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
PURCHASE
4,453$5.49$24.4K99,721Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
PURCHASE
9,745$4.95$48.2K95,268Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
SALE
9,745——0Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
SALE
4,453——2,226Aug 11, 2023Aug 11, 2023 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
18,844——80,268Jun 16, 2023Jun 21, 2023 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
29,136——29,136Jun 16, 2023Jun 21, 2023 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
1,323——61,424Jan 6, 2023Jan 9, 2023 ↗View →
CDNA
CAREDX, INC.
SALE
15,000——0Nov 23, 2022Nov 23, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASE
15,000$1.22$18.3K60,101Nov 23, 2022Nov 23, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
986——45,101Oct 4, 2022Oct 4, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
812——44,115Jul 1, 2022Jul 6, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
4,863——43,303Jun 16, 2022Jun 21, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
7,606——7,606Jun 16, 2022Jun 21, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
223$22.46$5.0K38,440May 9, 2022May 10, 2022 ↗View →
INVA
INNOVIVA, INC.
PURCHASEGRANT
Stock grant
10,000——10,000Apr 25, 2022Apr 27, 2022 ↗View →
INVA
INNOVIVA, INC.
PURCHASEGRANT
Stock grant
12,647——137,207Apr 25, 2022Apr 27, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
481——38,217Apr 1, 2022Apr 5, 2022 ↗View →
CDNA
CAREDX, INC.
SALE
25,000$39.11$977.7K37,736Feb 28, 2022Mar 1, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
287——62,736Jan 3, 2022Jan 6, 2022 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
196——62,449Oct 1, 2021Oct 4, 2021 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
188——62,253Jul 1, 2021Jul 6, 2021 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
1,127——62,065Jun 16, 2021Jun 21, 2021 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
1,812——1,812Jun 16, 2021Jun 21, 2021 ↗View →
INVA
INNOVIVA, INC.
PURCHASE
10,000$13.46$134.6K124,560May 24, 2021May 25, 2021 ↗View →
INVA
INNOVIVA, INC.
PURCHASE
10,000$12.97$129.7K114,560May 21, 2021May 25, 2021 ↗View →
CDNA
CAREDX, INC.
SALE
799$75.97$60.7K60,938May 21, 2021May 21, 2021 ↗View →
CDNA
CAREDX, INC.
SALE
9,201$75.28$692.7K61,737May 21, 2021May 21, 2021 ↗View →
INVA
INNOVIVA, INC.
PURCHASEGRANT
Stock grant
17,482——104,560May 14, 2021May 20, 2021 ↗View →
CDNA
CAREDX, INC.
SALE
9,400$63.03$592.5K71,538May 12, 2021May 13, 2021 ↗View →
CDNA
CAREDX, INC.
SALE
600$63.75$38.2K70,938May 12, 2021May 13, 2021 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
193——80,938Apr 1, 2021Apr 5, 2021 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
258——80,745Jan 4, 2021Jan 6, 2021 ↗View →
CDNA
CAREDX, INC.
SALE
3,224$72.04$232.2K82,563Dec 14, 2020Dec 14, 2020 ↗View →
CDNA
CAREDX, INC.
SALE
4,700$71.10$334.2K85,787Dec 14, 2020Dec 14, 2020 ↗View →
CDNA
CAREDX, INC.
SALE
2,076$72.84$151.2K80,487Dec 14, 2020Dec 14, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
444——90,487Oct 1, 2020Oct 2, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
527——90,043Jul 1, 2020Jul 6, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
3,190——88,847Jun 18, 2020Jun 19, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
4,978$31.35$156.1K4,978Jun 18, 2020Jun 19, 2020 ↗View →
CDNA
CAREDX, INC.
SALE
10,000$27.65$276.5K85,657May 13, 2020May 13, 2020 ↗View →
INVA
INNOVIVA, INC.
PURCHASEGRANT
Stock grant
16,917——87,078Apr 24, 2020Apr 28, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
669——96,326Apr 1, 2020Jul 6, 2020 ↗View →
CDNA
CAREDX, INC.
PURCHASEGRANT
Stock grant
653——95,657Jan 2, 2020Jan 3, 2020 ↗View →
Other insiders · CDNA
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About this filer
CIK 0001329646
ROLE
Director
PRIMARY
CDNA
COMPANIES
2
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001329646DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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