MarketPeel
Insider Trading Intelligence
Pricing
…
MC

Martin I. Cole

WDC
DIRECTOR · WESTERN DIGITAL CORP · CIK 0001302874
FILING MIX · LIFETIME22%/78%
BUYS
22
SELLS
79
TOTAL VALUE
$6.28M
COMPANIES
2
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
120,021
AVG SELL PX
$241.59
TRADE KIND
SHOWING 101 / 101
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
33 backtested trades · 8 horizons · 80 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Martin I. Cole, 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
7d33+42.42%+0.92%-0.10%+1.01%+2.90%2.38
14d33+33.33%+2.52%-1.79%+4.31%+5.13%5.54
30d33+0.00%+7.47%-1.47%+8.93%+5.10%10.06
60d33+0.00%+43.99%+3.03%+40.96%+51.29%13.01
90d33+0.00%+83.91%+1.40%+73.09%+79.52%—
180d33(14 pending)+0.00%+196.57%+5.97%+170.34%+170.34%—
1y33(33 pending)——————
2y33(33 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
WDC · 2.557 shares · as of Jun 17, 2026
012,34024,68037,02049,360202120222023202420252026SHARES 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 / 79 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
0.404——2.557Jun 17, 2026Jun 22, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$542.79$26.1K25,497Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$531.62$25.5K25,993Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$540.96$8.7K25,545Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
96$507.94$48.8K28,585Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$497.47$23.9K29,113Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
44$493.64$21.7K29,193Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
80$503.80$40.3K28,777Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
38$491.06$18.7K29,267Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$499.69$8.0K29,049Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
128$502.87$64.4K28,857Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$528.07$25.3K26,105Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
32$494.63$15.8K29,161Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$486.87$23.4K29,321Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
32$523.23$16.7K26,345Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
160$521.14$83.4K26,377Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$525.56$8.4K26,281Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$484.28$23.2K29,385Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$524.72$25.2K26,297Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
310$511.67$158.6K27,917Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
96$505.51$48.5K28,681Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
326$510.61$166.5K28,227Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
216$517.59$111.8K26,585Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
32$509.16$16.3K28,553Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
96$533.01$51.2K25,897Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$488.06$7.8K29,305Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
112$536.27$60.1K25,721Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$519.25$24.9K26,537Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
57$538.81$30.7K25,593Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
316$513.14$162.2K27,601Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$544.95$8.7K25,433Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
64$530.27$33.9K26,041Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
112$516.72$57.9K26,801Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
392$515.40$202.0K26,913Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
64$501.72$32.1K28,985Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$485.54$7.8K29,369Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$533.97$25.6K25,849Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
16$534.90$8.6K25,833Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
296$514.09$152.2K27,305Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
30$492.38$14.8K29,237Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
71$537.73$38.2K25,650Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$543.92$26.1K25,449Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
32$539.82$17.3K25,561Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
48$498.95$23.9K29,065Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
128$527.22$67.5K26,153Jun 9, 2026Jun 11, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
0.786——2.154Mar 18, 2026Mar 19, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
300$274.87$82.5K30,133Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
300$265.70$79.7K35,033Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
100$281.99$28.2K29,433Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
100$263.66$26.4K35,333Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
107$278.97$29.9K29,726Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
1,400$271.68$380.4K31,733Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
193$280.73$54.2K29,533Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
200$276.53$55.3K29,933Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
634$268.84$170.4K34,099Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
1,100$272.56$299.8K30,633Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
100$277.16$27.7K29,833Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
300$267.81$80.3K34,733Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
966$269.72$260.6K33,133Mar 2, 2026Mar 3, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
200$273.57$54.7K30,433Mar 2, 2026Mar 3, 2026 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
20,921——120,018Mar 2, 2026Mar 4, 2026 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
1.368——1.368Dec 18, 2025Dec 22, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
900$161.17$145.1K39,333Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
2,539$164.20$416.9K35,943Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
451$163.16$73.6K38,482Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
600$159.89$95.9K40,233Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
400$162.12$64.8K38,933Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
100$157.50$15.8K41,333Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
510$164.95$84.1K35,433Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
500$158.98$79.5K40,833Dec 1, 2025Dec 3, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
1,915——41,433Nov 20, 2025Nov 21, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASE
14——39,518Nov 19, 2025Nov 21, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE
14.426——0Nov 19, 2025Nov 21, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
833$158.02$131.6K47,887Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
1,231$163.08$200.8K40,860Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
221$155.77$34.4K49,139Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
558$164.99$92.1K39,504Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
144$152.99$22.0K49,360Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
798$164.08$130.9K40,062Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
960$161.31$154.9K45,394Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
551$159.16$87.7K47,336Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
419$157.01$65.8K48,720Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
3,303$162.18$535.7K42,091Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
SALE10b5-1
10b5-1 plan
982$160.24$157.4K46,354Nov 5, 2025Nov 6, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
5.201——14.426Sep 18, 2025Sep 22, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
9.225——9.225Jun 18, 2025Jun 23, 2025 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
18,797——99,097Feb 24, 2025Feb 26, 2025 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
3,759——47,803Nov 20, 2024Nov 22, 2024 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
15,625——80,300Feb 26, 2024Feb 28, 2024 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
5,213——44,044Nov 15, 2023Nov 16, 2023 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
12,058——64,675Feb 23, 2023Feb 27, 2023 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
6,589——38,831Nov 16, 2022Nov 17, 2022 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
8,593——52,617Feb 24, 2022Feb 28, 2022 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
4,103——32,242Nov 16, 2021Nov 17, 2021 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
6,692——44,024Feb 19, 2021Feb 23, 2021 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
5,648——28,139Nov 18, 2020Nov 19, 2020 ↗View →
WDC
WESTERN DIGITAL CORP
SALE
91.303——0Nov 14, 2020Nov 17, 2020 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASE
91——22,491Nov 14, 2020Nov 17, 2020 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
56.683——91.303Apr 17, 2020Apr 21, 2020 ↗View →
WU
WESTERN UNION CO
PURCHASEGRANT
Stock grant
6,038——37,332Feb 20, 2020Feb 21, 2020 ↗View →
WDC
WESTERN DIGITAL CORP
PURCHASEGRANT
Stock grant
34.62——34.62Jan 21, 2020Jan 23, 2020 ↗View →
Other insiders · WDC
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About this filer
CIK 0001302874
ROLE
Director
PRIMARY
WDC
COMPANIES
2
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001302874DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

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

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