LITTELFUSE INC (LFUS) Stock Institutional Trading Activity


LITTELFUSE INC (LFUS) 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, Mairs & Power Growth Fund, Vulcan Value Partners, Ariel Appreciation Fund, and Giverny Capital. 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
Q1 2021Mairs & Power Growth FundBuy17,713737,188$194,942
Q4 2020Giverny CapitalSell-54,7132,788$710
Q4 2020Vulcan Value PartnersSell-140,690158,650$40,402
Q4 2020Ariel Appreciation FundSell-17,156363,328$92,525
Q4 2020Mairs & Power Growth FundBuy68,592719,475$183,222
Q3 2020Ariel Appreciation FundSell-21,356380,484$67,475
Q3 2020Olstein Capital ManagementSell-4,85017,600$3,121
Q3 2020Giverny CapitalSell-74157,501$10,197
Q3 2020Vulcan Value PartnersSell-22,339299,340$53,085
Q3 2020Mairs & Power Growth FundBuy14,470650,883$115,428
Q2 2020Ariel Appreciation FundBuy8,247401,840$68,566
Q2 2020Giverny CapitalSell-32858,242$9,938
Q2 2020Vulcan Value PartnersBuy174,954321,679$54,888
Q2 2020Mairs & Power Growth FundBuy31,320636,413$108,591
Q1 2020Ariel Appreciation FundSell-12,716393,593$52,513
Q1 2020Polen Capital ManagementBuy5605,963$796
Q1 2020Olstein Capital ManagementSell-1,45022,450$2,995
Q1 2020Giverny CapitalSell-57,80058,570$7,814
Q1 2020Vulcan Value PartnersBuy35,308146,725$19,576
Q1 2020Mairs & Power Growth FundBuy76,523605,093$80,732
Q4 2019Vulcan Value PartnersBuy111,417111,417$21,314
Q4 2019Mairs & Power Growth FundBuy20,580528,570$101,115
Q4 2019Ariel Appreciation FundBuy3,888406,309$77,727
Q4 2019Renaissance Technologies LLCSell-4001,200$230
Q4 2019Polen Capital ManagementBuy7285,403$1,034
Q4 2019Olstein Capital ManagementSell-4,10023,900$4,572
Q4 2019Giverny CapitalBuy1,699116,370$22,262
Q3 2019Mairs & Power Growth FundBuy44,483507,990$90,072
Q3 2019Ariel Appreciation FundSell-39,981402,421$71,353
Q3 2019Polen Capital ManagementBuy704,675$829

Frequently asked questions about LFUS activity

  • Which institutional owners are buying LFUS?

    Institutional owners buying LFUS 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 LFUS activity?

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

  • Is institutional interest in LFUS increasing?

    Institutional interest in LFUS 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.