Western Digital

WDC • NASDAQ

Western Digital is a computer hardware company in the technology sector on NASDAQ, led by Tiang Yew Tan, with a market cap of $75.9B. As of Q3 2025, 99% of shares are held by 933 institutional investors, with VANGUARD GROUP INC as the largest holder at 12.48%.

CEOTiang Yew Tan

Market Cap$75.9B

Computer Hardware

Technology

Employees53.0K

Websitewdc.com

Country

United States of America

Overview

Overview of institutional ownership in WDC as of Q3 2025 with a market cap of $41.7B

All Institutions

Institutions: 933
Value Held: $41.3B
Shares Held: 344.5M
Avg Position: $44.3M
Median Position: $1.2M

Hedge Funds

Hedge Funds: 105
Value Held: $4.5B
Shares Held: 37.6M
Avg Position: $42.9M
Median Position: $10.7M

Ownership Breakdown

Institutional (non-HF)

88.37%

$36.8B

Hedge Funds

10.83%

$4.5B

Retail & Other

0.804%

$335.0M

Based on market cap of $41.7B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in WDC as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$5.2B 0.08% of portfolio	12.48% 43.3M shares	≤ Q2 2013 Held for 12y 6m+	$6.69T
BlackRock, Inc. Institution	Laurence D. Fink CEO	$4.2B 0.07% of portfolio	10.01% 34.7M shares	≤ Q2 2013 Held for 12y 6m+	$5.67T
FMR LLC Institution	-	$2.9B 0.15% of portfolio	6.85% 23.8M shares	≤ Q2 2013 Held for 12y 6m+	$1.92T
BANK OF AMERICA CORP /DE/ Institution	Brian T. Moynihan CEO	$2.7B 0.20% of portfolio	6.45% 22.4M shares	≤ Q2 2013 Held for 12y 6m+	$1.33T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$1.9B 0.06% of portfolio	4.46% 15.5M shares	≤ Q2 2013 Held for 12y 6m+	$2.88T
JPMORGAN CHASE & CO Institution	Jamie Dimon CEO	$1.4B 0.09% of portfolio	3.46% 12.0M shares	≤ Q2 2013 Held for 12y 6m+	$1.56T
D D. E. Shaw & Co., Inc. Institution	-	$1.2B 1.00% of portfolio	2.77% 9.6M shares	≤ Q2 2013 Held for 12y 6m+	$115.81B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$1.1B 0.07% of portfolio	2.71% 9.4M shares	≤ Q2 2013 Held for 12y 6m+	$1.57T
AMERIPRISE FINANCIAL INC Institution	Jim Cracchiolo CEO	$1.0B 0.24% of portfolio	2.50% 8.7M shares	≤ Q2 2013 Held for 12y 6m+	$433.11B
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$1.0B 0.06% of portfolio	2.42% 8.4M shares	≤ Q2 2013 Held for 12y 6m+	$1.65T

Net Capital Flow

Institutional buying and selling activity for WDC in Q3 2025

Traded: +$188.5M
Buyers: 633
Sellers: 285
Total Bought: +$6.6B
Total Sold: −$6.4B
Avg Position: $41.5M

Biggest Buyers

Institution	Net Bought	Current Position
D D. E. Shaw & Co., Inc. Institution	+$806.6M +6.7M shares	$1.2B 9.6M shares
WCM INVESTMENT MANAGEMENT/CA Long Only Manager	+$791.3M +6.8M shares	$791.3M 6.8M shares
F FRED ALGER MANAGEMENT INC Long Only Manager	+$400.9M +3.3M shares	$409.0M 3.4M shares
Polar Capital Holdings Plc Long Only Manager	+$221.8M +1.8M shares	$221.8M 1.8M shares
N Nuveen, LLC Institution	+$142.2M +1.2M shares	$306.5M 2.6M shares
Castle Hook Partners LP Hedge Fund•Global Macro	+$124.8M +1.0M shares	$210.4M 1.8M shares
BANK OF MONTREAL /CAN/ Institution	+$123.6M +1.0M shares	$188.1M 1.6M shares
WORLDQUANT MILLENNIUM QUANTITATIVE STRATEGIES LLC Hedge Fund•Multi-Strategy	+$115.1M +958.3K shares	$155.5M 1.3M shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	+$113.7M +946.9K shares	$137.9M 1.1M shares
J JANE STREET GROUP, LLC Institution	+$105.9M +882.5K shares	$109.6M 912.9K shares

Biggest Sellers

Institution	Net Sold	Current Position
FMR LLC Institution	−$1.0B −8.5M shares	$2.9B 23.8M shares
Slate Path Capital LP Hedge Fund•Long/Short	−$554.9M −4.6M shares	$170.0M 1.4M shares
UBS Group AG Institution	−$491.9M −4.1M shares	$880.0M 7.3M shares
D DnB Asset Management AS Institution	−$471.1M −3.9M shares	$110.3M 918.5K shares
BANK OF AMERICA CORP /DE/ Institution	−$422.2M −3.5M shares	$2.7B 22.4M shares
Holocene Advisors, LP Hedge Fund•Long/Short	−$392.1M −3.3M shares	$272.6M 2.3M shares
Soroban Capital Partners LLC Hedge Fund•Long/Short	−$229.9M −1.9M shares	$137.6M 1.1M shares
I Impactive Capital LP Hedge Fund•Activist	−$228.5M −3.6M shares	Sold Off 0 shares
BALYASNY ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$218.2M −1.8M shares	$261.2M 2.2M shares
GOLDMAN SACHS GROUP INC Institution	−$191.8M −1.6M shares	$300.8M 2.5M shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited WDC in Q3 2025

New Positions: 110
New Value: $1.1B
Exited Positions: 62
Exited Value: $767.8M

New Positions

Institution	Position Value
WCM INVESTMENT MANAGEMENT/CA Long Only Manager	$791.3M 6.8M shares
W WT Asset Management Ltd Institution	$59.9M 499.3K shares
N Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. Institution	$41.3M 343.9K shares
A Anatole Investment Management Ltd Institution	$32.6M 271.3K shares
APIS CAPITAL ADVISORS, LLC Hedge Fund•Long/Short	$24.8M 206.8K shares
Hawk Ridge Management LLC Hedge Fund•Long/Short	$19.2M 159.7K shares
S Sienna Gestion Institution	$9.4M 86.0K shares
G GF FUND MANAGEMENT CO. LTD. Institution	$7.8M 65.2K shares
M Mediolanum International Funds Ltd Institution	$7.4M 63.1K shares
Empirical Financial Services, LLC RIA/Wealth	$6.7M 55.6K shares

Exited Positions

Institution	Previous Position
I Impactive Capital LP Hedge Fund•Activist	$228.5M 3.6M shares
Elliott Investment Management L.P. Hedge Fund•Multi-Strategy	$144.0M 2.3M shares
C Capitolis Liquid Global Markets LLC Private Equity	$64.0M 1.0M shares
WESTFIELD CAPITAL MANAGEMENT CO LP Long Only Manager	$55.2M 862.2K shares
MANGROVE PARTNERS Hedge Fund•Multi-Strategy	$52.7M 824.3K shares
G GLENVIEW CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	$38.4M 600.6K shares
M Meridiem Capital Partners LP Hedge Fund•Long/Short	$33.3M 519.8K shares
N Nearwater Capital Markets, Ltd Institution	$32.3M 504.0K shares
A AXA Institution	$22.1M 345.4K shares
T Troluce Capital Advisors LLC Hedge Fund•Multi-Strategy	$16.3M 255.2K shares

Options Activity

Institutions with the largest Call and Put options positions in WDC as of Q3 2025

Call Positions: 44
Call Value: $2.0B
Put Positions: 49
Put Value: $2.8B

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$494.9M 41.2K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$365.8M 30.5K contracts
J JANE STREET GROUP, LLC Institution	$174.2M 14.5K contracts
P PEAK6 LLC Institution	$133.3M 11.1K contracts
Walleye Trading LLC RIA/Wealth	$103.8M 13.6K contracts
N NOMURA HOLDINGS INC Institution	$87.7M 7.3K contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$79.3M 6.6K contracts
CITIGROUP INC Institution	$59.1M 4.9K contracts
R Rokos Capital Management LLP Hedge Fund•Global Macro	$54.6M 4.6K contracts
L LMR Partners LLP Institution	$51.8M 4.3K contracts

Put Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$644.3M 53.7K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$385.0M 32.1K contracts
J JANE STREET GROUP, LLC Institution	$287.1M 23.9K contracts
B BNP PARIBAS ARBITRAGE, SA Institution	$217.0M 180.8 contracts
Walleye Trading LLC RIA/Wealth	$180.6M 15.0K contracts
P PEAK6 LLC Institution	$157.3M 13.1K contracts
R Rokos Capital Management LLP Hedge Fund•Global Macro	$129.7M 10.8K contracts
S Squarepoint Ops LLC Hedge Fund•Quant	$74.2M 6.2K contracts
S Saba Capital Management, L.P. Hedge Fund•Multi-Strategy	$67.1M 5.6K contracts
CITIGROUP INC Institution	$61.2M 5.1K contracts

Most Committed Institutions

Institutions with WDC as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
DeepCurrents Investment Group LLC Hedge Fund•Multi-Strategy	Kai Zheng President	12.74% $5.2M	0.01% 43.1K shares	Q1 2024 Held for 1y 9m	$40.6M
M Maple Rock Capital Partners, Inc. Hedge Fund•Multi-Strategy	Xavier George Majic CEO	12.14% $310.9M	0.75% 2.6M shares	Q1 2019 Held for 6y 9m	$2.6B
T Talos Asset Management LP Hedge Fund•Market Neutral	Franklin Eric Keller CIO	9.83% $53.8M	0.13% 448.1K shares	Q2 2025 Held for 6 months	$547.4M
A Atalan Capital Partners, LP Hedge Fund•Long/Short	David Randolph Thomas Managing Partner	9.31% $133.4M	0.32% 1.1M shares	Q4 2024 Held for 1 year	$1.4B
R Rivermont Capital Management LP Hedge Fund•Long/Short	Frank Rosser Gough Managing Partner	7.15% $27.1M	0.07% 225.5K shares	Q3 2024 Held for 1y 3m	$378.6M
Highland Peak Capital, LLC Hedge Fund•Multi-Strategy	Seth Se Eung Kirner Managing Partner	7.07% $18.9M	0.05% 157.3K shares	Q3 2024 Held for 1y 3m	$267.0M
S Seatown Holdings Pte. Ltd. Institution	-	6.92% $12.0M	0.03% 100.0K shares	Q3 2025 Held for 3 months	$173.5M
Wolf Hill Capital Management, LP Hedge Fund•Long/Short	Gary Steven Lehrman Founder	6.46% $73.6M	0.18% 612.7K shares	Q2 2025 Held for 6 months	$1.1B
Alta Park Capital, LP Hedge Fund•Long/Short	Connor Patrick Joyce CFO	5.54% $56.5M	0.14% 470.9K shares	Q2 2025 Held for 6 months	$1.0B
APIS CAPITAL ADVISORS, LLC Hedge Fund•Long/Short	Daniel James Barker CIO	5.27% $24.8M	0.06% 206.8K shares	Q3 2025 Held for 3 months	$471.4M

Hedge Fund Spotlight

Discover hedge funds investing in WDC

DENDUR CAPITAL LP

Hedge Fund • Event Driven

Portfolio ManagerMalcolm Andrew Levine

Portfolio Value: $897.0M
Positions: 14
Last Reported: Q3 2025

Sector Allocation

Position in Western Digital

Market Value: $19.4M
Shares Held: 162.0K
Portfolio Weight: 2.17%
Owned Since: 2024-Q4

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