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Western Digital

1,835 hedge funds and large institutions have $206B invested in Western Digital in 2026 Q2 according to their latest regulatory filings, with 531 funds opening new positions, 587 increasing their positions, 602 reducing their positions, and 87 closing their positions.

New
Increased
Maintained
Reduced
Closed

510% more first-time investments, than exits

New positions opened: 531 | Existing positions closed: 87

129% more capital invested

Capital invested by funds: $90B → $206B (+$116B)

72% more funds holding in top 10

Funds holding in top 10: 3662 (+26)

30% more funds holding

Funds holding: 1,4151,835 (+420)

2% less repeat investments, than reductions

Existing positions increased: 587 | Existing positions reduced: 602

5.16% less ownership

Funds ownership: 98.74%93.58% (-5.2%)

62% less call options, than puts

Call options by funds: $8.87B | Put options by funds: $23.5B

Holders
1,835
Holders Change
+420
Holders Change %
+29.68%
% of All Funds
22.16%
Holding in Top 10
62
Holding in Top 10 Change
+26
Holding in Top 10 Change %
+72.22%
% of All Funds
0.75%
New
531
Increased
587
Reduced
602
Closed
87
Calls
$8.87B
Puts
$23.5B
Net Calls
-$14.7B
Net Calls Change
-$10.9B
Name Holding Trade Value Shares
Change
Change in
Stake
Wellington Management Group
51
Wellington Management Group
Massachusetts
$551M +$404M +830,157 +2,512%
Sumitomo Mitsui Trust Group
52
Sumitomo Mitsui Trust Group
Japan
$546M +$8.97M +18,458 +2%
AT
53
AMF Tjänstepension
Sweden
$543M -$254M -523,063 -38%
Barclays
54
Barclays
United Kingdom
$532M -$106M -217,435 -21%
CS
55
Clear Street
New York
$522M +$281M +577,142 +240%
PCH
56
Polar Capital Holdings
United Kingdom
$507M -$87.1M -179,156 -18%
WAM
57
WT Asset Management
Hong Kong
$501M -$15.8M -32,495 -4%
Bank of Nova Scotia
58
Bank of Nova Scotia
Ontario, Canada
$500M +$204M +420,037 +116%
California Public Employees Retirement System
59
California Public Employees Retirement System
California
$490M +$46.7M +96,076 +14%
NAMI
60
Nomura Asset Management International
Pennsylvania
$478M -$69.6M -143,056 -16%
Vanguard Global Advisers
61
Vanguard Global Advisers
Pennsylvania
$477M +$885K +1,820 +0.2%
First Trust Advisors
62
First Trust Advisors
Illinois
$471M +$179M +368,276 +100%
Franklin Resources
63
Franklin Resources
California
$457M +$210M +432,692 +153%
Principal Financial Group
64
Principal Financial Group
Iowa
$438M +$4.47M +9,195 +1%
Vanguard Asset Management
65
Vanguard Asset Management
$424M +$36.5M +74,995 +13%
Citadel Advisors
66
Citadel Advisors
Florida
$420M +$191M +392,010 +147%
JCAM
67
Jericho Capital Asset Management
New York
$412M +$30.7M +63,202 +11%
RhumbLine Advisers
68
RhumbLine Advisers
Massachusetts
$404M +$18.9M +38,804 +7%
Robeco Institutional Asset Management
69
Robeco Institutional Asset Management
Netherlands
$403M -$172M -354,005 -36%
Neuberger Berman Group
70
Neuberger Berman Group
New York
$397M +$80.3M +165,240 +36%
Renaissance Technologies
71
Renaissance Technologies
New York
$343M -$296M -608,660 -53%
Acadian Asset Management
72
Acadian Asset Management
Massachusetts
$340M -$47.3M -97,290 -15%
CI
73
Clal Insurance
Israel
$334M -$60.8M -125,000 -19%
Primecap Management
74
Primecap Management
California
$330M -$29.5M -60,770 -11%
Susquehanna International Group
75
Susquehanna International Group
Pennsylvania
$329M -$25.8M -53,118 -9%

WDC Hedge Fund Activity: Q2 2026 in Review

1,835 of the 8,279 institutional investors tracked by Wall St. Rank reported a position in Western Digital (WDC) for Q2 2026, worth a combined $206B — up 129% from $90B a quarter earlier.

Buyers outnumbered sellers: 531 funds opened new WDC positions and 87 closed out — a net gain of 444 holders — while 587 added to existing stakes and 602 trimmed.

The largest buyer was Capital World Investors, adding an estimated $2.29B. The largest seller was Fidelity Investments, cutting an estimated $2.74B.

  • 1,835 institutional investors held Western Digital (WDC) as of Q2 2026, up from 1,415 in Q1 2026.
  • Funds reported $206B of Western Digital stock for Q2 2026, up 129% quarter-over-quarter.
  • 531 funds opened new Western Digital positions in Q2 2026 and 87 closed out, a net change of +444 holders.
  • The largest Western Digital buyer in Q2 2026 was Capital World Investors, an estimated $2.29B added.
  • The largest Western Digital seller in Q2 2026 was Fidelity Investments, an estimated $2.74B sold.

Based on aggregated 13F filings for Q2 2026.