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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
PSC
176
Portman Square Capital
United Kingdom
$4.3M
SOMRS
177
State of Michigan Retirement System
Michigan
$4.25M
STB
178
S&T Bank
Pennsylvania
$4.16M
JGUA
179
John G. Ullman & Associates
New York
$4.07M
ASRS
180
Arizona State Retirement System
Arizona
$4.04M
VOYA Investment Management
181
VOYA Investment Management
Georgia
$4.01M
Rafferty Asset Management
182
Rafferty Asset Management
New York
$3.98M
Zurich Cantonal Bank
183
Zurich Cantonal Bank
Switzerland
$3.96M
Cerity Partners
184
Cerity Partners
New York
$3.93M
CIBC World Market
185
CIBC World Market
Ontario, Canada
$3.92M
KAM
186
Knightsbridge Asset Management
California
$3.88M
Handelsbanken Fonder
187
Handelsbanken Fonder
Sweden
$3.87M
UM
188
UniSuper Management
Australia
$3.8M
SEI Investments
189
SEI Investments
Pennsylvania
$3.73M
Parallax Volatility Advisers
190
Parallax Volatility Advisers
California
$3.71M
HT
191
HAP Trading
New York
$3.71M
ProShare Advisors
192
ProShare Advisors
Maryland
$3.67M
MIM
193
MetLife Investment Management
New Jersey
$3.65M
SMDAM
194
Sumitomo Mitsui DS Asset Management
Japan
$3.61M
Nisa Investment Advisors
195
Nisa Investment Advisors
Missouri
$3.5M
RR
196
Robotti Robert
$3.5M
Commonwealth Equity Services
197
Commonwealth Equity Services
Massachusetts
$3.49M
Millennium Management
198
Millennium Management
New York
$3.46M
CIBC Private Wealth Group
199
CIBC Private Wealth Group
Georgia
$3.43M
MHIP
200
Mountain Hill Investment Partners
New Jersey
$3.35M