MICRON TECHNOLOGY INC (MU) Stock Institutional Trading Activity


MICRON TECHNOLOGY INC (MU) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Appaloosa Management, Cullen Value Fund, Donald Smith & Co., and Parnassus Endeavor Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2019Renaissance Technologies LLCBuy5,905,2399,735,914$375,709
Q1 2019Donald Smith & Co.Sell-1,987,5145,714,002$236,160
Q1 2019Yacktman Asset ManagementBuy9,707521,799$21,566
Q1 2019Fairfax Financial HoldingsBuy250,000298,000$12,313
Q1 2019Dalal StreetBuy1,152,4181,699,265$70,231
Q1 2019Miller Value PartnersBuy1,174,0151,880,315$77,713
Q1 2019Viking Global InvestorsBuy2,029,8822,289,892$94,641
Q1 2019Renaissance Technologies LLCSell-790,8363,830,675$158,322
Q1 2019Appaloosa ManagementBuy3,250,00019,250,000$795,603
Q4 2018Donald Smith & Co.Buy33,4337,701,516$244,369
Q4 2018Yacktman Asset ManagementBuy254,579512,092$16,249
Q4 2018Parnassus Endeavor FundBuy1,500,0006,400,000$203,072
Q4 2018Hancock Classic ValueBuy6,2896,289$200
Q4 2018Fairfax Financial HoldingsBuy48,00048,000$1,523
Q4 2018Dalal StreetBuy546,847546,847$17,351
Q4 2018Miller Value PartnersBuy506,300706,300$22,411
Q4 2018Renaissance Technologies LLCBuy4,392,9754,621,511$146,641
Q4 2018Appaloosa ManagementSell-20,000,00016,000,000$507,680
Q3 2018Donald Smith & Co.Sell-89,8227,668,083$346,827
Q3 2018Yacktman Asset ManagementBuy257,513257,513$11,647
Q3 2018Appaloosa ManagementSell-4,527,80036,000,000$1,628,280
Q2 2018Donald Smith & Co.Sell-677,5437,757,905$406,825
Q2 2018Parnassus Endeavor FundBuy1,400,0004,900,000$256,956
Q2 2018Viking Global InvestorsSell-30,886,050260,010$13,635
Q2 2018Greenlight CapitalSell-3,071,500275,500$14,447
Q2 2018Appaloosa ManagementBuy5,122,80040,527,800$2,125,278
Q1 2018Donald Smith & Co.Sell-2,374,2298,435,448$439,824
Q1 2018Sound Shore ManagementSell-543,2982,535,950$132,224
Q1 2018Parnassus Endeavor FundSell-400,0003,500,000$182,490
Q1 2018Miller Value PartnersBuy200,000200,000$10,428

Frequently asked questions about MU activity

  • Which institutional owners are buying MU?

    Institutional owners buying MU 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 MU activity?

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

  • Is institutional interest in MU increasing?

    Institutional interest in MU 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.