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.
Holders of 5% or more of KMX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of CarMax Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 11.40%16.7M shares | +4.90 ppfrom 6.50% | Feb 5, 20253 filings | Nov 6, 2025 | SEC |
| AQR Capital Management LLC | 13G | 5.59%7.93M shares | New | Feb 13, 20261 filing | Feb 13, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
6 Schedule 13D and 13G filings on CarMax Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20264:43 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 13, 202611:17 AM ET | AQR Capital Management LLCand 1 other | 13G | 5.59%7.93M shares | New | Dec 31, 2025 | SEC |
| Nov 6, 20252:23 PM ET | BlackRock, Inc. | 13G/A | 11.40%16.7M shares | +4.90 ppfrom 6.50% | Oct 31, 2025 | SEC |
| Jul 16, 20257:02 PM ET | BlackRock, Inc. | 13G/A | 6.50%9.74M shares | −1.40 ppfrom 7.90% | Jun 30, 2025 | SEC |
| May 9, 20255:51 PM ET | Principal Global Investors | 13G/A | 4.00%6.22M shares | –Below 5% | Mar 31, 2025 | SEC |
| Feb 5, 20251:23 PM ET | BlackRock, Inc. | 13G/A | 7.90%12.1M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell CarMax Inc shares.
No Form 144 notices for CarMax Inc are on file.