13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Computer Storage DevicesMega-capCrowded
WDC

WESTERN DIGITAL CORP

1,456 institutions still hold WESTERN DIGITAL CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 958102105·Computer Storage Devices·1,456 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 0.1%
vs prior quarter
13F value held
$64.2B
59.0% inst. owned
of float
Holders
1,456
-93 QoQ
filers reporting
Activity
+43 / −113
+951 added · −848 reduced
this quarter
Concentration
15.07%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

1,456 institutions reported WDC in Q1 2026. BlackRock, Inc. leads at 15.1% of the visible book. -93 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$9.7B35.8M0.17%Q1 202602
FMR LLC
CIK 0000315066
$8.6B31.6M0.45%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119
$6.0B22.0M0.15%Q1 202604
Vanguard Portfolio Management
CIK 0002100121
$4.6B17.2M0.24%Q1 202605
JPMORGAN CHASE & CO
CIK 0000019617
$4.4B17.5M0.28%Q1 202606
STATE STREET CORP
CIK 0000093751
$4.2B15.5M0.14%Q1 202607
Capital World Investors
CIK 0001422849
$3.2B11.9M0.44%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2.6B9.5M0.16%Q1 202609
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$2.5B9.1M0.28%Q1 202610
BANK OF AMERICA CORP /DE/
CIK 0000070858
$2.3B8.5M0.17%Q1 202611
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$2.2B8.2M0.29%Q1 202612
MORGAN STANLEY
CIK 0000895421
$2.1B7.9M0.13%Q1 202613
CITADEL ADVISORS LLC
CIK 0001423053
$1.7B10.2M0.26%Q4 202514
WCM INVESTMENT MANAGEMENT, LLC
CIK 0001061186
$1.7B6.6M3.77%Q1 202615
GOLDMAN SACHS GROUP INC
CIK 0000886982
$1.6B6.0M0.19%Q1 202616
AMERIPRISE FINANCIAL INC
CIK 0000820027
$1.6B5.8M0.36%Q1 202617
Invesco Ltd.
CIK 0000914208
$1.5B5.6M0.23%Q1 202618
WELLS FARGO & COMPANY/MN
CIK 0000072971
$1.4B5.1M0.26%Q1 202619
UBS Group AG
CIK 0001610520
$1.3B4.7M0.19%Q1 202620
D. E. Shaw & Co., Inc.
CIK 0001009207
$1.2B6.9M0.65%Q4 2025
Page 1 of 73
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