KMX · NYSE · Auto - Dealerships

CarMax (KMX)

Sells used vehicles through stores and nationwide online-to-store customer journeys.

$55.13
vs last close−1.71 (−3.01%)

13F · 13D/G · Form 4

Institutions≈ 109.78%155.78M shares
596 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail
Insiders7.06%10.02M shares
24 holders · as of Jun 29, 2026
Strategic holders5.60%7.94M shares
1 holder · as of Feb 14, 2020
Adds to122.44%

141.91M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

These groups come from separate filings that can overlap, so they add to 122.44%; nothing is left for Other.

13F · 13D/G · Form 4

HolderStakeSharesDate
BlackRock, Inc.Institution
12.04%17.09Mas of Jun 30, 2026
Principal Global InvestorsInsider
6.46%9.17Mfiled Feb 16, 2021
Ruane, Cunniff & Goldfarb L.P.Strategic
5.60%7.94Mfiled Feb 14, 2020
Vanguard Portfolio Management LLCInstitution
5.13%7.29Mas of Jun 30, 2026
AQR Capital Management LLCInstitution
4.67%6.62Mas of Jun 30, 2026
Vanguard Capital Management LLCInstitution
4.52%6.42Mas of Jun 30, 2026
SRS Investment Management, LLCInstitution
4.17%5.92Mas of Jun 30, 2026
Two Sigma Investments, LPInstitution
4.11%5.83Mas of Jun 30, 2026
State Street CorpInstitution
3.63%5.16Mas of Jun 30, 2026
Dimensional Fund Advisors LPInstitution
3.51%4.97Mas of Jun 30, 2026
Jupiter Topco LLCInstitution
3.27%4.65Mas of Jun 30, 2026
Primecap Management Co/CA/Institution
3.07%4.36Mas of Jun 30, 2026
D. E. Shaw & Co., Inc.Institution
2.31%3.28Mas of Jun 30, 2026
American Century Companies IncInstitution
2.29%3.25Mas of Jun 30, 2026
Baird Financial Group, Inc.Institution
2.26%3.21Mas of Jun 30, 2026
Starboard Value LPInstitution
2.26%3.21Mas of Jun 30, 2026
First Pacific Advisors, LPInstitution
2.12%3.01Mas of Jun 30, 2026
Hawk Ridge Capital Management LPInstitution
2.00%2.83Mas of Jun 30, 2026
Geode Capital Management, LLCInstitution
1.81%2.56Mas of Jun 30, 2026
Manufacturers Life Insurance Company, theInstitution
1.71%2.42Mas of Jun 30, 2026
Canada Pension Plan Investment BoardInstitution
1.54%2.18Mas of Jun 30, 2026
Morgan StanleyInstitution
1.53%2.18Mas of Jun 30, 2026
Apollo Management Holdings, L.P.Institution
1.40%1.99Mas of Jun 30, 2026
Millennium Management LLCInstitution
1.34%1.90Mas of Jun 30, 2026
Slate Path Capital LPInstitution
1.29%1.83Mas of Jun 30, 2026

13F, as of Jun 30, 2026

596 holders · 155.78M shares · 93 new positions · 224 increased · 264 reduced · 86 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.17.09M12.04%−165.4KAug 7, 2026
Vanguard Portfolio Management LLC7.29M5.13%+10.2KAug 13, 2026
AQR Capital Management LLC6.62M4.67%−3.44MAug 14, 2026
Vanguard Capital Management LLC6.42M4.52%+33.4KAug 13, 2026
SRS Investment Management, LLC5.92M4.17%+271.2KAug 14, 2026
Two Sigma Investments, LP5.83M4.11%+484.9KAug 14, 2026
State Street Corp5.16M3.63%+271.2KAug 7, 2026
Dimensional Fund Advisors LP4.97M3.51%+699.1KAug 11, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
BlackRock, Inc.11.40%16.75M13GNov 6, 2025
AQR Capital Management, LLC7.10%10.06M13GMay 14, 2026
Vanguard Capital Management5.26%7.47M13GApr 29, 2026
Vanguard Portfolio Management5.18%7.35M13GApr 29, 2026

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jun 24, 2026
Mark F. ONeildirector
Purchase · 2 lots9,600$52.3634,290
Jun 25, 2026
Marcella Shinderdirector
Purchase574$52.0124,993
Jun 25, 2026
Sona Chawladirector
Purchase2,000$53.3921,702
Jun 22, 2026
Keith Barrdirector, officer: President and CEO
Purchase9,400$53.0133,375
Jun 22, 2026
Peter J. Bensendirector
Purchase2,500$52.2024,796
Oct 2, 2025
Mark F. ONeildirector
Purchase10,816$46.2124,690
Oct 2, 2025
Mitchell D. Steenroddirector
Purchase2,000$45.5738,330

House and Senate disclosures

MemberTypeAmountOwnerTradedDisclosed
Rep. Gilbert Cisneros · CA31Purchase$1,001 – $15,000Aug 19, 2026Sep 11, 2026