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Myrtle S. Potter

DNA
DIRECTOR · GINKGO BIOWORKS HOLDINGS, INC. · CIK 0001214130
FILING MIX · LIFETIME53%/47%
BUYS
56
SELLS
49
TOTAL VALUE
$341.9K
COMPANIES
2
ACTIVE SINCE
Nov 2021
HOLDINGS NOW
20,971
AVG SELL PX
$79.28
TRADE KIND
SHOWING 105 / 105
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
6 backtested trades · 8 horizons · 10 pending
Forward-return performance of every backtestable P/S trade by Myrtle S. Potter, 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
7d6+50.00%+2.12%+0.88%+1.24%-0.28%—
14d6+33.33%+9.45%+1.86%+7.59%+5.59%—
30d6+33.33%+12.60%+2.59%+10.01%+5.28%—
60d6+0.00%+31.02%+4.45%+26.58%+11.66%—
90d6+0.00%+44.52%+6.21%+38.31%+45.27%—
180d6+0.00%+82.87%+8.49%+74.38%+80.77%—
1y6(4 pending)+0.00%+160.02%+24.63%+135.39%+135.39%—
2y6(6 pending)——————
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
DNA · 0 shares · as of Jun 11, 2025
0277,778555,556833,3331,111,1112025SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 56 buys / 49 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
1,556$131.16$204.1K20,971Jun 22, 2026Jun 23, 2026 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
4,203——22,527Jun 17, 2026Jun 22, 2026 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
2,711——2,711Jun 17, 2026Jun 22, 2026 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
4,203——0Jun 17, 2026Jun 22, 2026 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
26$66.95$1.7K18,324Oct 17, 2025Oct 20, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——18,350Oct 15, 2025Oct 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——0Oct 15, 2025Oct 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
26$55.63$1.4K18,281Sep 17, 2025Sep 17, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——18,307Sep 15, 2025Sep 17, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——69Sep 15, 2025Sep 17, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
26$59.02$1.5K18,239Aug 19, 2025Aug 20, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——137Aug 15, 2025Aug 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——18,265Aug 15, 2025Aug 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
26$48.20$1.3K18,196Jul 17, 2025Jul 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——206Jul 15, 2025Jul 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——18,222Jul 15, 2025Jul 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
26$49.47$1.3K18,154Jun 18, 2025Jun 20, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
4,203——4,203Jun 18, 2025Jun 20, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
6,833——6,833Jun 18, 2025Jun 20, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE10b5-1
10b5-1 plan
2,626$49.70$130.5K18,180Jun 16, 2025Jun 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——274Jun 15, 2025Jun 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——20,806Jun 15, 2025Jun 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
6,674——0Jun 12, 2025Jun 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
6,674——20,737Jun 12, 2025Jun 16, 2025 ↗View →
DNA
GINKGO BIOWORKS HOLDINGS, INC.
PURCHASE
10,822——10,822Jun 11, 2025Jun 13, 2025 ↗View →
DNA
GINKGO BIOWORKS HOLDINGS, INC.
SALE
10,822——0Jun 11, 2025Jun 13, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——343May 15, 2025May 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——14,063May 15, 2025May 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——411Apr 15, 2025Apr 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,995Apr 15, 2025Apr 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——13,927Mar 15, 2025Mar 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——479Mar 15, 2025Mar 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,858Feb 15, 2025Feb 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——548Feb 15, 2025Feb 18, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——616Jan 15, 2025Jan 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,790Jan 15, 2025Jan 16, 2025 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——13,722Dec 15, 2024Dec 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——684Dec 15, 2024Dec 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,653Nov 15, 2024Nov 18, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——753Nov 15, 2024Nov 18, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——821Oct 15, 2024Oct 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——13,585Oct 15, 2024Oct 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,516Sep 15, 2024Sep 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——890Sep 15, 2024Sep 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——958Aug 15, 2024Aug 19, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,448Aug 15, 2024Aug 19, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——13,380Jul 15, 2024Jul 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,026Jul 15, 2024Jul 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——13,311Jun 15, 2024Jun 17, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,095Jun 15, 2024Jun 17, 2024 ↗View →
DNA
GINKGO BIOWORKS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
432,900——432,900Jun 13, 2024Jun 14, 2024 ↗View →
DNA
GINKGO BIOWORKS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
571,428——571,428Jun 13, 2024Jun 14, 2024 ↗View →
DNA
GINKGO BIOWORKS HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,111,111——1,111,111Jun 13, 2024Jun 14, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
5,592——0Jun 12, 2024Jun 13, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
10,703——10,703Jun 12, 2024Jun 13, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
5,592——13,243Jun 12, 2024Jun 13, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
6,674——6,674Jun 12, 2024Jun 13, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,163May 15, 2024May 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——7,651May 15, 2024May 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,582Apr 15, 2024Apr 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,232Apr 15, 2024Apr 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,300Mar 15, 2024Mar 18, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,514Mar 15, 2024Mar 18, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,368Feb 15, 2024Feb 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——7,446Feb 15, 2024Feb 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,437Jan 15, 2024Jan 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,377Jan 15, 2024Jan 16, 2024 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——7,309Dec 15, 2023Dec 18, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,505Dec 15, 2023Dec 18, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,574Nov 15, 2023Nov 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,240Nov 15, 2023Nov 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,172Oct 15, 2023Oct 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,642Oct 15, 2023Oct 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——7,104Sep 15, 2023Sep 19, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,710Sep 15, 2023Sep 19, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,779Aug 15, 2023Aug 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——7,035Aug 15, 2023Aug 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——6,967Jul 15, 2023Jul 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——1,847Jul 15, 2023Jul 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——6,898Jun 15, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,916Jun 15, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
5,531——6,830Jun 14, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
5,592——5,592Jun 14, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
8,803——8,803Jun 14, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
5,531——0Jun 14, 2023Jun 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——1,299May 15, 2023May 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——1,984May 15, 2023May 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——1,231Apr 15, 2023Apr 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——2,052Apr 15, 2023Apr 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
68——1,162Mar 15, 2023Mar 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——2,121Mar 15, 2023Mar 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——2,189Feb 15, 2023Feb 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
69——1,094Feb 15, 2023Feb 16, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
68——1,025Jan 15, 2023Jan 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——2,258Jan 15, 2023Jan 17, 2023 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
68——957Dec 15, 2022Dec 20, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
68——2,326Dec 15, 2022Dec 20, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
69——2,394Nov 15, 2022Nov 16, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
69——889Nov 15, 2022Nov 16, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
SALE
820——2,463Oct 15, 2022Oct 18, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASE
820——820Oct 15, 2022Oct 18, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
8,789——8,789Jun 15, 2022Jun 17, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
5,531——5,531Jun 15, 2022Jun 17, 2022 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
3,283——3,283Nov 8, 2021Nov 10, 2021 ↗View →
GH
GUARDANT HEALTH, INC.
PURCHASEGRANT
Stock grant
5,613——5,613Nov 8, 2021Nov 10, 2021 ↗View →
Other insiders · DNA
Loading peer insiders…
About this filer
CIK 0001214130
ROLE
Director
PRIMARY
DNA
COMPANIES
2
ACTIVE SINCE
Nov 2021
MARKETPEEL · /INSIDER/0001214130DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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

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