WESTERN DIGITAL CORP (WDC) Institutional Ownership Changes & 13F Activity

WESTERN DIGITAL CORP (WDC) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Parnassus Endeavor Fund, Sequoia Financial Advisors, Thunderbird Partners, and Viking Global Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2016Appaloosa ManagementSell-30,0001,120,000$76,104
Q3 2016Appaloosa ManagementSell-300,0001,150,000$67,241
Q3 2016Renaissance Technologies LLCSell-135,0725,019$293
Q2 2016Appaloosa ManagementBuy1,450,0001,450,000$68,527
Q2 2016First Eagle U.S. ValueBuy60,50060,500$2,859
Q2 2016Renaissance Technologies LLCSell-29,009140,091$6,621
Q2 2016Jensen Investment ManagementBuy2,14011,160$527
Q1 2016Jensen Investment ManagementBuy2,6809,020$426
Q4 2015Jensen Investment ManagementBuy1,4106,340$381
Q3 2015Renaissance Technologies LLCSell-41,400169,100$13,433
Q2 2015Renaissance Technologies LLCBuy148,100210,500$16,507
Q1 2015Renaissance Technologies LLCSell-472,80062,400$5,679
Q4 2014Renaissance Technologies LLCSell-92,400535,200$59,247
Q4 2014Sequoia Financial AdvisorsBuy1,9471,947$216
Q3 2014Renaissance Technologies LLCBuy400,300627,600$61,078
Q3 2014Hancock Classic ValueBuy22,625105,750$10,292
Q3 2014Jensen Investment ManagementSell-5004,930$480
Q2 2014Hancock Classic ValueBuy54,72583,125$7,672
Q2 2014Renaissance Technologies LLCSell-35,600227,300$20,980
Q2 2014Jensen Investment ManagementSell-7005,430$501
Q1 2014Renaissance Technologies LLCSell-170,202262,900$24,139
Q1 2014Hancock Classic ValueBuy28,40028,400$2,608
Q1 2014Jensen Investment ManagementSell-8406,130$563
Q4 2013Renaissance Technologies LLCBuy15,202433,102$36,337
Q4 2013Jensen Investment ManagementBuy1006,970$585
Q3 2013Renaissance Technologies LLCBuy139,300417,900$26,495
Q3 2013Jensen Investment ManagementSell-3,1696,870$436
Q2 2013Renaissance Technologies LLCBuy278,600278,600$17,298
Q2 2013Jensen Investment ManagementBuy10,03910,039$623

Frequently asked questions about WDC activity

  • Which institutional owners are buying WDC?

    Institutional owners buying WDC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in WDC activity?

    "Buy" means an investor increased their reported position in WDC compared to the prior reporting period. This reflects growing exposure to WESTERN DIGITAL CORP (WDC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in WDC increasing?

    Institutional interest in WDC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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