CARMAX INC (KMX) Stock Institutional Trading Activity


CARMAX INC (KMX) 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, Vulcan Value Partners, Ariel Appreciation Fund, Turtle Creek Asset Management, 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
Q4 2021Giverny CapitalSell-50,3401,109,239$144,456
Q4 2021Sequoia FundSell-184,8516,969,289$907,611
Q4 2021Akre Capital ManagementBuy181,0907,290,172$949,399
Q3 2021Ariel Appreciation FundSell-29,888318,189$40,715
Q3 2021Appaloosa ManagementSell-23,500391,500$50,096
Q3 2021Turtle Creek Asset ManagementSell-52,454480,914$61,538
Q3 2021Giverny CapitalBuy48,7151,159,579$148,380
Q3 2021Akre Capital ManagementSell-4,0257,109,082$909,678
Q3 2021Sequoia FundBuy427,9467,154,140$915,444
Q2 2021Ariel Appreciation FundSell-444348,077$44,954
Q2 2021Appaloosa ManagementSell-239,300415,000$53,597
Q2 2021Turtle Creek Asset ManagementBuy29,450533,368$68,884
Q2 2021Giverny CapitalBuy41,5401,110,864$143,468
Q2 2021Sequoia FundSell-87,1306,726,194$868,688
Q2 2021Akre Capital ManagementSell-4507,113,107$918,658
Q1 2021Ariel Appreciation FundSell-54,746348,521$46,235
Q1 2021Turtle Creek Asset ManagementBuy129,750503,918$66,850
Q1 2021Appaloosa ManagementSell-95,700654,300$86,799
Q1 2021Giverny CapitalSell-46,6131,069,324$141,857
Q1 2021Third PointSell-175,0001,100,000$145,926
Q1 2021Sequoia FundBuy264,3276,813,324$903,856
Q1 2021Akre Capital ManagementSell-365,6857,113,557$943,684
Q4 2020Renaissance Technologies LLCBuy253,200309,200$29,207
Q4 2020Turtle Creek Asset ManagementBuy63,650374,168$35,344
Q4 2020Ariel Appreciation FundBuy75,968403,267$38,093
Q4 2020Appaloosa ManagementBuy750,000750,000$70,845
Q4 2020Viking Global InvestorsBuy794,240794,240$75,024
Q4 2020Giverny CapitalBuy37,3221,115,937$105,411
Q4 2020Third PointBuy1,275,0001,275,000$120,436
Q4 2020Sequoia FundSell-29,3936,548,997$618,618

Frequently asked questions about KMX activity

  • Which institutional owners are buying KMX?

    Institutional owners buying KMX 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 KMX activity?

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

  • Is institutional interest in KMX increasing?

    Institutional interest in KMX 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.