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Western Digital

1,170 hedge funds and large institutions have $57.5B invested in Western Digital in 2025 Q4 according to their latest regulatory filings, with 303 funds opening new positions, 407 increasing their positions, 362 reducing their positions, and 70 closing their positions.

New
Increased
Maintained
Reduced
Closed

333% more first-time investments, than exits

New positions opened: 303 | Existing positions closed: 70

39% more capital invested

Capital invested by funds: $41.5B → $57.5B (+$16B)

22% more funds holding

Funds holding: 9601,170 (+210)

12% more repeat investments, than reductions

Existing positions increased: 407 | Existing positions reduced: 362

1.37% less ownership

Funds ownership: 99.16%97.78% (-1.4%)

7% less funds holding in top 10

Funds holding in top 10: 2927 (-2)

43% less call options, than puts

Call options by funds: $2.92B | Put options by funds: $5.17B

Holders
1,170
Holders Change
+210
Holders Change %
+21.88%
% of All Funds
14.24%
Holding in Top 10
27
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-6.9%
% of All Funds
0.33%
New
303
Increased
407
Reduced
362
Closed
70
Calls
$2.92B
Puts
$5.17B
Net Calls
-$2.25B
Net Calls Change
-$1.5B
Name Holding Trade Value Shares
Change
Change in
Stake
WP
201
Woodline Partners
California
$18.9M +$16.6M +109,557 New
RAM
202
Resona Asset Management
Japan
$18.7M -$979K -6,459 -6%
GC
203
Guggenheim Capital
Illinois
$18.7M +$11.9M +78,267 +259%
DekaBank Deutsche Girozentrale
204
DekaBank Deutsche Girozentrale
Germany
$18.6M
Creative Planning
205
Creative Planning
Kansas
$18.4M +$4.14M +27,316 +34%
SFI
206
Susquehanna Fundamental Investments
Pennsylvania
$18.2M
SOMRS
207
State of Michigan Retirement System
Michigan
$17.9M -$925K -6,100 -6%
Carson Wealth (CWM LLC)
208
Carson Wealth (CWM LLC)
Nebraska
$17.7M +$3.07M +20,218 +25%
CM
209
Caption Management
Oklahoma
$17.6M +$910K +6,000 +6%
Nisa Investment Advisors
210
Nisa Investment Advisors
Missouri
$17.5M +$215K +1,416 +1%
MAM
211
Melqart Asset Management
United Kingdom
$17.1M -$13.4M -88,191 -47%
Nordea Investment Management
212
Nordea Investment Management
Sweden
$17.1M +$4.41M +29,060 +42%
Parallax Volatility Advisers
213
Parallax Volatility Advisers
California
$16.7M +$9.13M +60,186 +163%
MIF
214
Mediolanum International Funds
Ireland
$16.7M +$4.85M +31,971 +51%
Wealth Enhancement Advisory Services
215
Wealth Enhancement Advisory Services
Minnesota
$16.7M +$1.38M +9,112 +14%
SMDAM
216
Sumitomo Mitsui DS Asset Management
Japan
$16.7M +$803K +5,296 +6%
ASRS
217
Arizona State Retirement System
Arizona
$16.5M -$1.12M -7,411 -7%
NAM
218
Nissay Asset Management
Japan
$16.4M +$7.47M +49,256 +107%
Cetera Investment Advisers
219
Cetera Investment Advisers
Illinois
$16.3M +$3.31M +21,832 +30%
US Bancorp
220
US Bancorp
Minnesota
$16.2M -$95.1K -627 -0.7%
Pacer Advisors
221
Pacer Advisors
Pennsylvania
$16.2M +$4.31M +28,443 +44%
HPC
222
Highland Peak Capital
Connecticut
$16.1M -$9.67M -63,798 -41%
EGM
223
Engineers Gate Manager
New York
$15.9M +$9.39M +61,910 +203%
Walleye Trading
224
Walleye Trading
New York
$15.8M +$6.86M +45,216 +98%
Ensign Peak Advisors
225
Ensign Peak Advisors
Utah
$15.6M -$3.08M -20,335 -18%