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.
Explore more:
- CARMAX INC (KMX) stock institutional ownership
- CARMAX INC (KMX) stock insider trading activity
- Stock rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2018 | Oakcliff Capital Partners | Buy | 41,776 | 236,776 | $14,665 |
| Q1 2018 | Giverny Capital | Buy | 58,738 | 1,091,588 | $67,613 |
| Q1 2018 | Akre Capital Management | Buy | 8,256 | 5,162,166 | $319,745 |
| Q1 2018 | Sequoia Fund | Buy | 11,952,575 | 11,952,575 | $724,804 |
| Q4 2017 | Dodge & Cox Stock Fund | Sell | -3,000 | 26,000 | $1,667 |
| Q4 2017 | Oakcliff Capital Partners | Buy | 25,000 | 195,000 | $12,505 |
| Q4 2017 | Giverny Capital | Buy | 97,703 | 1,032,850 | $66,237 |
| Q4 2017 | Renaissance Technologies LLC | Buy | 200,600 | 1,350,400 | $86,601 |
| Q4 2017 | Akre Capital Management | Sell | -603 | 5,153,910 | $330,520 |
| Q3 2017 | Dodge & Cox Stock Fund | Sell | -9,440 | 29,000 | $2,198 |
| Q3 2017 | Giverny Capital | Buy | 34,838 | 935,147 | $70,893 |
| Q3 2017 | Renaissance Technologies LLC | Buy | 1,026,400 | 1,149,800 | $87,166 |
| Q3 2017 | Akre Capital Management | Sell | -16,088 | 5,154,513 | $390,764 |
| Q2 2017 | Dodge & Cox Stock Fund | Sell | -3,400 | 38,440 | $2,424 |
| Q2 2017 | Renaissance Technologies LLC | Sell | -334,000 | 123,400 | $7,782 |
| Q2 2017 | Giverny Capital | Buy | 32,689 | 900,309 | $56,773 |
| Q2 2017 | Akre Capital Management | Buy | 13,120 | 5,170,601 | $326,058 |
| Q1 2017 | Dodge & Cox Stock Fund | Sell | -19,637 | 41,840 | $2,478 |
| Q1 2017 | Oakcliff Capital Partners | Buy | 170,000 | 170,000 | $10,067 |
| Q1 2017 | Giverny Capital | Buy | 16,738 | 867,620 | $51,380 |
| Q4 2016 | Dodge & Cox Stock Fund | Sell | -2,563 | 61,477 | $3,959 |
| Q4 2016 | Meritage Group | Buy | 19,241 | 19,241 | $1,239 |
| Q4 2016 | Giverny Capital | Buy | 8,686 | 850,882 | $54,788 |
| Q4 2016 | Akre Capital Management | Buy | 199,215 | 5,157,481 | $332,090 |
| Q3 2016 | Dodge & Cox Stock Fund | Sell | -1,500 | 64,040 | $3,417 |
| Q3 2016 | Renaissance Technologies LLC | Buy | 289,900 | 457,400 | $24,402 |
| Q3 2016 | Giverny Capital | Buy | 3,312 | 842,196 | $44,931 |
| Q2 2016 | Dodge & Cox Stock Fund | Sell | -8,100 | 65,540 | $3,213 |
| Q2 2016 | Giverny Capital | Buy | 13,791 | 838,884 | $41,130 |
| Q2 2016 | Akre Capital Management | Buy | 639,945 | 4,958,266 | $288,869 |
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.