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Western Digital

650 hedge funds and large institutions have $14.2B invested in Western Digital in 2025 Q1 according to their latest regulatory filings, with 97 funds opening new positions, 109 increasing their positions, 444 reducing their positions, and 140 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

less funds holding

Funds holding:

less funds holding in top 10

Funds holding in top 10:

less ownership

Funds ownership:

29% less capital invested

Capital invested by funds: $20B → $14.2B (-$5.83B)

31% less first-time investments, than exits

New positions opened: 97 | Existing positions closed: 140

75% less repeat investments, than reductions

Existing positions increased: 109 | Existing positions reduced: 444

Holders
650
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$953M
Puts
$437M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
6CM
76
683 Capital Management
New York
$20.2M
California State Teachers Retirement System (CalSTRS)
77
California State Teachers Retirement System (CalSTRS)
California
$20M
TC
78
Tairen Capital
Hong Kong
$19.8M
BFM
79
Boothbay Fund Management
New York
$18.8M
Mackenzie Financial
80
Mackenzie Financial
Ontario, Canada
$18.4M
MCP
81
Meridiem Capital Partners
Texas
$18.2M
AQR Capital Management
82
AQR Capital Management
Connecticut
$17.7M
Russell Investments Group
83
Russell Investments Group
United Kingdom
$17M
ARAM
84
Ardmore Road Asset Management
New York
$16.2M
Principal Financial Group
85
Principal Financial Group
Iowa
$15.8M
California Public Employees Retirement System
86
California Public Employees Retirement System
California
$15.7M
Canada Life
87
Canada Life
Manitoba, Canada
$15.1M
PAMP
88
Polar Asset Management Partners
Ontario, Canada
$15.1M
Loomis, Sayles & Company
89
Loomis, Sayles & Company
Massachusetts
$14.9M
GAM
90
Gotham Asset Management
New York
$14.8M
National Pension Service
91
National Pension Service
South Korea
$14.3M
SFM
92
Soros Fund Management
New York
$14.2M
State Board of Administration of Florida Retirement System
93
State Board of Administration of Florida Retirement System
Florida
$13M
State of Wisconsin Investment Board
94
State of Wisconsin Investment Board
Wisconsin
$12M
KBC Group
95
KBC Group
Belgium
$11.7M
TP
96
Thunderbird Partners
United Kingdom
$11.3M
SFI
97
Susquehanna Fundamental Investments
Pennsylvania
$11.2M
National Bank of Canada
98
National Bank of Canada
Quebec, Canada
$10.7M
QCM
99
Quantinno Capital Management
New York
$10.7M
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
100
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$10.4M