Carmax
KMX · NYSE
Who owns KMX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 47.0% of KMX’s shares.
- BlackRock Institutional Trust Company, N.A.10.8%
- Vanguard Portfolio Management, LLC5.1%
- AQR Capital Management, LLC4.7%
- Vanguard Capital Management, LLC4.5%
- Next 6 largest institutions21.8%
- All other shareholders53.0%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 15.39M | 10.85% |
| Vanguard Portfolio Management, LLC | 7.29M | 5.13% |
| AQR Capital Management, LLC | 6.62M | 4.67% |
| Vanguard Capital Management, LLC | 6.42M | 4.52% |
| SRS Investment Management, LLC | 5.92M | 4.17% |
| Two Sigma Investments, LP | 5.85M | 4.13% |
| State Street Investment Management (US) | 5.16M | 3.63% |
| Dimensional Fund Advisors, L.P. | 4.97M | 3.51% |
| Janus Henderson Investors | 4.65M | 3.27% |
| PRIMECAP Management Company | 4.36M | 3.07% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 8.65M | 6.09% |
| Vanguard Total Stock Market Index Fund | 4.52M | 3.19% |
| Vanguard Small-Cap Index Fund | 3.26M | 2.30% |
| Janus Henderson Enterprise Fund | 3.16M | 2.22% |
| Avantis US Small Cap Value ETF | 2.71M | 1.91% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $1.27M (6 trades) of KMX on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Chawla Sona | Buy | 2.00K | $106.78K |
| Shinder Marcella | Buy | 574 | $29.85K |
| ONeil Mark F | Buy | 4.80K | $251.33K |
| ONeil Mark F | Buy | 4.80K | $251.33K |
| FOLLIARD THOMAS J | Option exercise | 14.86K | — |
| FOLLIARD THOMAS J | Tax withholding | 3.62K | $187.81K |
| FOLLIARD THOMAS J | Option exercise | 14.86K | $771.12K |
| Bensen Peter J | Buy | 2.50K | $130.50K |
| Barr Keith | Buy | 9.40K | $498.25K |
| Mayor-Mora Enrique N | Award | 22.90K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Gilbert CisnerosHouse | Purchase | $1K–$15K | Aug 19, 2026 |
Short interest
Settled Sep 30, 2026
- Shares short
- 10.76M
- Days to cover
- 2.39
- % of shares outstanding
- 7.58%
- Average daily volume
- 4.50M
- Change since last report
- +9.6%
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