Who owns Carmax Inc (KMX)?
164 US mutual funds and ETFs from 84 fund families reported a position in KMX for the quarter ending 2026-06-30. Against their own report a quarter earlier, 47 raised shares, 9 opened a new position, 66 cut and 14 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Ishares Trust | 10 | 28.9% |
| Vanguard Index Funds | 4 | 28.2% |
| Janus Investment Fund | 1 | 8.1% |
| Spdr Series Trust | 8 | 5.6% |
| Investment Managers Series Trust Iii | 2 | 5.1% |
| Vanguard Horizon Funds | 2 | 4.5% |
Tracked managers holding KMX
| Investor | Book weight |
|---|---|
| Starboard | 3.8% |
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about KMX. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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