CarMax Inc
KMX- Exchange
- NYSE
- Industry
- Retail-Auto Dealers & Gasoline Stations
- SEC CIK
- 0001170010
No open-market purchases or sales by CarMax Inc insiders were filed in the last 90 days; 557 institutions reported holding it in 13F filings for Q2 2026, worth $7.80B in total; superinvestors Starboard Value and Markel Group hold it.
13F holders, Q3 2026
Institutional positions in CarMax Inc as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.
- Institutional holders
- 5
- +1 vs. Q2 2026
- Shares held
- 4.21K
- +333 (+8.6%) vs. Q2 2026
- Total value
- $232.0K
- +$26.7K (+13.0%) vs. Q2 2026
- New holders
- 1
- 2 more added
- Sold out
- 0
- 1 more reduced
553 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting KMX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 557 | $7.80B |
| Q1 2026 | 550 | $6.36B |
| Q4 2025 | 537 | $5.83B |
| Q3 2025 | 622 | $6.54B |
| Q2 2025 | 731 | $10.7B |
| Q1 2025 | 753 | $12.6B |
| Q4 2024 | 750 | $13.1B |
| Q3 2024 | 743 | $12.6B |
| Q2 2024 | 707 | $12.4B |
| Q1 2024 | 716 | $15.0B |
| Q4 2023 | 706 | $13.0B |
| Q3 2023 | 683 | $11.9B |
| Q2 2023 | 705 | $13.9B |
| Q1 2023 | 674 | $11.0B |
| Q4 2022 | 659 | $10.4B |
| Q3 2022 | 640 | $10.9B |
| Q2 2022 | 693 | $14.7B |
| Q1 2022 | 696 | $16.0B |
| Q4 2021 | 737 | $20.3B |
| Q3 2021 | 685 | $19.9B |
| Q2 2021 | 682 | $20.3B |
| Q1 2021 | 699 | $20.4B |
Institutions, Q3 2026
Shares, value and share of portfolio for each institution holding CarMax Inc; share changes are against Q2 2026.