Who holds WDC (WESTERN DIGITAL CORP)?

WDC

WESTERN DIGITAL CORP

Data as of 2026 Q1 (03-31) · 13F snapshot

Summary

WESTERN DIGITAL CORP (WDC) is held by 15 tracked hedge-fund managers, a combined reported value of ~$3.15B; the largest are Ken Griffin, Ken Griffin, Renaissance Technologies. This quarter: 3 added, 3 trimmed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.

Attention · HighThis quarter · Mixed

Gurus holding15

Congress trades20

Price$519.80vs quarter-end+92.17%

Sectors2

This quarter's moves

New0

Added3

Trimmed / sold3

Top holderKen Griffin

Ken GriffinPUT—

Value $962.46M— of portfolio3,558,2002026 Q1

Ken GriffinCALL—

Value $547.44M— of portfolio2,023,9002026 Q1

Renaissance TechnologiesAdd

Value $310.02M0.5% of portfolio1,146,1332026 Q1

Andreas HalvorsenBig add

Value $240.89M1.1% of portfolio7,400,7462022 Q3

Steven CohenAdd

Value $168.77M0.3% of portfolio623,9442026 Q1

Paul SingerHold

Value $143.98M1.2% of portfolio2,250,0002025 Q2

Joel GreenblattTrim

Value $99.48M0.3% of portfolio367,7682026 Q1

David TepperAdd

Value $85.11M1.0% of portfolio1,099,5002018 Q2

Izzy EnglanderPUT—

Value $80.34M— of portfolio297,0002026 Q1

Steven CohenPUT—

Value $75.76M— of portfolio280,1002026 Q1

Ray DalioAdd

Value $67.36M0.3% of portfolio249,0392026 Q1

Steven CohenCALL—

Value $55.45M— of portfolio205,0002026 Q1

Izzy EnglanderCALL—

Value $43.12M— of portfolio159,4002026 Q1

Stanley DruckenmillerAdd

Value $24.88M0.7% of portfolio417,1602024 Q4

David EinhornHold

Value $19.03M0.5% of portfolio378,4002013 Q1

Michael BurryCALL—

Value $9.87M— of portfolio270,0002020 Q3

Michael BurryTrim

Value $8.31M5.9% of portfolio150,0002020 Q4

Investor	Period	Value	Shares	% of portfolio	Action
Ken GriffinPUT	2026 Q1	$962.46M	3,558,200	—	—
Ken GriffinCALL	2026 Q1	$547.44M	2,023,900	—	—
Renaissance Technologies	2026 Q1	$310.02M	1,146,133	0.5%	Add
Andreas Halvorsen	2022 Q3	$240.89M	7,400,746	1.1%	Big add
Steven Cohen	2026 Q1	$168.77M	623,944	0.3%	Add
Paul Singer	2025 Q2	$143.98M	2,250,000	1.2%	Hold
Joel Greenblatt	2026 Q1	$99.48M	367,768	0.3%	Trim
David Tepper	2018 Q2	$85.11M	1,099,500	1.0%	Add
Izzy EnglanderPUT	2026 Q1	$80.34M	297,000	—	—
Steven CohenPUT	2026 Q1	$75.76M	280,100	—	—
Ray Dalio	2026 Q1	$67.36M	249,039	0.3%	Add
Steven CohenCALL	2026 Q1	$55.45M	205,000	—	—
Izzy EnglanderCALL	2026 Q1	$43.12M	159,400	—	—
Stanley Druckenmiller	2024 Q4	$24.88M	417,160	0.7%	Add
David Einhorn	2013 Q1	$19.03M	378,400	0.5%	Hold
Michael BurryCALL	2020 Q3	$9.87M	270,000	—	—
Michael Burry	2020 Q4	$8.31M	150,000	5.9%	Trim

Insider Trading

Officers · directors · Form 4

Cynthia L Tregillis
Chief Legal Officer & Corp Sec
Sell$638.0K
1,309 @ $487.42Traded 2026-07-20Filed 2026-07-21
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
Buy
13 @ $0.00Traded 2026-07-20Filed 2026-07-21
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
Sell$427.9K
808 @ $529.63Traded 2026-07-20Filed 2026-07-21
Brian Scott Davis
Chief Sales & Mrktng Officer
Buy
8Traded 2026-06-17Filed 2026-06-22
Tunc Doluca
Director
Buy
0Traded 2026-06-17Filed 2026-06-22
Brian Scott Davis
Chief Sales & Mrktng Officer
Buy
12Traded 2026-06-17Filed 2026-06-22
Roxanne Oulman
Director
Buy
0Traded 2026-06-17Filed 2026-06-22
Irving Tan
Chief Executive Officer
Sell$813.4K
1,090 @ $746.23Traded 2026-06-17Filed 2026-06-22
Ahmed Mohammed Shihab
Chief Product Officer
Sell$3.67M
5,149 @ $712.13Traded 2026-06-17Filed 2026-06-22
Kris Sennesael
Chief Financial Officer
Buy
28Traded 2026-06-17Filed 2026-06-22
Vidyadhara K Gubbi
Chief of Global Operations
Buy
14Traded 2026-06-17Filed 2026-06-22
Brad Feller
SVP & Chief Accounting Officer
Buy
2Traded 2026-06-17Filed 2026-06-22
Brian Scott Davis
Chief Sales & Mrktng Officer
Buy
7 @ $0.00Traded 2026-06-17Filed 2026-06-22
Brian Scott Davis
Chief Sales & Mrktng Officer
Sell$717.1K
961 @ $746.23Traded 2026-06-17Filed 2026-06-22
Irving Tan
Chief Executive Officer
Buy
57Traded 2026-06-17Filed 2026-06-22
Matthew E Massengill
Director
Buy
6Traded 2026-06-17Filed 2026-06-22
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
Buy
19Traded 2026-06-17Filed 2026-06-22
Irving Tan
Chief Executive Officer
Buy
52 @ $0.00Traded 2026-06-17Filed 2026-06-22
Stephanie A Streeter
Director
Buy
0Traded 2026-06-17Filed 2026-06-22
Ahmed Mohammed Shihab
Chief Product Officer
Buy
51 @ $0.00Traded 2026-06-17Filed 2026-06-22
Ahmed Mohammed Shihab
Chief Product Officer
Buy
52Traded 2026-06-17Filed 2026-06-22
Ahmed Mohammed Shihab
Chief Product Officer
Buy
28Traded 2026-06-17Filed 2026-06-22
Bruce E Kiddoo
Director
Buy
0Traded 2026-06-17Filed 2026-06-22
Manuvir Das
Director
Buy
0Traded 2026-06-17Filed 2026-06-22

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.