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Western Digital
WDC

Overview Fund Activity

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
Holders
650
Holders Change
-51
Holders Change %
-7.28%
% of All Funds
8.83%
Holding in Top 10
16
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-15.79%
% of All Funds
0.22%
New
97
Increased
109
Reduced
444
Closed
140
Calls
$953M
Puts
$437M
Net Calls
+$517M
Net Calls Change
-$188M

Top Buyers

1
UBS Group
UBS Group
Switzerland
+$258M
2
Fidelity International
Fidelity International
Bermuda
+$188M
3
Balyasny Asset Management
Balyasny Asset Management
Illinois
+$90.1M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$86.4M
5
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board
Ontario, Canada
+$50.9M

Top Sellers

1
Vanguard Group
Vanguard Group
Pennsylvania
-$535M
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
-$446M
3
BlackRock
BlackRock
New York
-$299M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$261M
5
State Street
State Street
Massachusetts
-$189M
Name Holding Trade Value Shares
Change 		Shares
Change %
6CM
76
683 Capital Management
New York
$20.2M -$3.29M -81,326 -14%
California State Teachers Retirement System (CalSTRS)
77
California State Teachers Retirement System (CalSTRS)
California
$20M -$6.32M -156,299 -24%
TC
78
Tairen Capital
Hong Kong
$19.8M +$19.8M +490,462 New
BFM
79
Boothbay Fund Management
New York
$18.8M +$7.34M +181,655 +64%
Mackenzie Financial
80
Mackenzie Financial
Ontario, Canada
$18.4M +$2.64M +65,398 +17%
MCP
81
Meridiem Capital Partners
Texas
$18.2M +$9.42M +233,004 +108%
AQR Capital Management
82
AQR Capital Management
Connecticut
$17.7M +$4.52M +114,268 +34%
Russell Investments Group
83
Russell Investments Group
United Kingdom
$17M -$3.6M -89,057 -18%
ARAM
84
Ardmore Road Asset Management
New York
$16.2M +$8.15M +201,550 +102%
Principal Financial Group
85
Principal Financial Group
Iowa
$15.8M -$5.07M -125,403 -24%
California Public Employees Retirement System
86
California Public Employees Retirement System
California
$15.7M -$11.9M -294,604 -43%
Canada Life
87
Canada Life
Manitoba, Canada
$15.1M -$5.13M -126,688 -25%
PAMP
88
Polar Asset Management Partners
Ontario, Canada
$15.1M -$4.73M -116,935 -24%
Loomis, Sayles & Company
89
Loomis, Sayles & Company
Massachusetts
$14.9M +$124K +3,077 +0.8%
GAM
90
Gotham Asset Management
New York
$14.8M -$2.39M -59,058 -14%
National Pension Service
91
National Pension Service
South Korea
$14.3M -$31.8M -786,590 -69%
SFM
92
Soros Fund Management
New York
$14.2M +$14.2M +350,000 New
State Board of Administration of Florida Retirement System
93
State Board of Administration of Florida Retirement System
Florida
$13M -$4.11M -101,589 -24%
State of Wisconsin Investment Board
94
State of Wisconsin Investment Board
Wisconsin
$12M -$3.85M -95,287 -24%
KBC Group
95
KBC Group
Belgium
$11.7M -$3.27M -80,900 -22%
TP
96
Thunderbird Partners
United Kingdom
$11.3M +$11.3M +280,201 New
SFI
97
Susquehanna Fundamental Investments
Pennsylvania
$11.2M +$1.11M +27,405 +11%
National Bank of Canada
98
National Bank of Canada
Quebec, Canada
$10.7M +$1.8M +44,446 +20%
QCM
99
Quantinno Capital Management
New York
$10.7M +$7.77M +192,238 +264%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
100
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$10.4M -$11.8M -293,053 -53%
2 3
4
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