Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in KMX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 17.1M | $904.0M | -1.0% | 12.044% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.3M | $385.4M | +0.1% | 5.135% | 0.02% |
| 3 | AQR CAPITAL MANAGEMENT LLC | 6.6M | $349.0M | -34.2% | 4.667% | 0.12% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 6.4M | $339.6M | +0.5% | 4.524% | 0.01% |
| 5 | SRS Investment Management, LLC | 5.9M | $313.3M | +4.8% | 4.174% | 2.90% |
| 6 | TWO SIGMA INVESTMENTS, LP | 5.8M | $309.4M | +9.2% | 4.122% | 0.22% |
| 7 | STATE STREET CORP | 5.2M | $272.7M | +5.5% | 3.633% | 0.00% |
| 8 | DIMENSIONAL FUND ADVISORS LP | 5.0M | $263.1M | +16.4% | 3.506% | 0.05% |
| 9 | Jupiter Topco LLC | 4.6M | $245.7M | β | 3.273% | 0.10% |
| 10 | PRIMECAP MANAGEMENT CO/CA/ | 4.4M | $230.5M | +0.0% | 3.072% | 0.14% |
| 11 | D. E. Shaw & Co., Inc. | 3.4M | $181.8M | +5.7% | 2.422% | 0.09% |
| 12 | AMERICAN CENTURY COMPANIES INC | 3.3M | $171.9M | +133.7% | 2.290% | 0.08% |
| 13 | Baird Financial Group, Inc. | 3.2M | $169.6M | +4.5% | 2.260% | 0.23% |
| 14 | Starboard Value LP | 3.2M | $169.6M | -48.3% | 2.260% | 3.75% |
| 15 | First Pacific Advisors, LP | 3.0M | $159.1M | +0.9% | 2.120% | 1.97% |
| 16 | HAWK RIDGE CAPITAL MANAGEMENT LP | 2.8M | $149.9M | β | 1.997% | 4.81% |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 2.6M | $135.6M | +0.4% | 1.807% | 0.01% |
| 18 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 2.4M | $128.0M | +0.9% | 1.705% | 0.05% |
| 19 | CANADA PENSION PLAN INVESTMENT BOARD | 2.2M | $115.5M | +693.8% | 1.538% | 0.06% |
| 20 | MORGAN STANLEY | 2.2M | $115.1M | -14.1% | 1.534% | 0.01% |
| 21 | Apollo Management Holdings, L.P. | 2.0M | $105.1M | -52.1% | 1.400% | 1.18% |
| 22 | MILLENNIUM MANAGEMENT LLC | 1.9M | $101.9M | +37.3% | 1.357% | 0.04% |
| 23 | Slate Path Capital LP | 1.8M | $96.7M | β | 1.288% | 1.34% |
| 24 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.7M | $90.1M | +8.0% | 1.200% | 0.01% |
| 25 | GOLDMAN SACHS GROUP INC | 1.6M | $86.4M | +2.1% | 1.152% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in KMX β a direct measure of their conviction.
Filings activity in KMX during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 561 | +2.0% | 107.75% | 4.48 pp | $7.99B | +23% |
| Q1 2026 | 550 | +3.2% | 112.23% | +1.63 pp | $6.49B | +9.7% |
| Q4 2025 | 533 | 14% | 110.60% | +7.61 pp | $5.92B | 12% |
| Q3 2025 | 618 | 14% | 102.99% | 1.96 pp | $6.72B | 36% |
| Q2 2025 | 721 | 1.8% | 104.95% | +2.13 pp | $10.41B | 13% |
| Q1 2025 | 734 | +0.8% | 102.82% | 3.33 pp | $12.02B | 14% |
| Q4 2024 | 728 | +1.8% | 106.15% | +2.70 pp | $14.04B | +17% |
| Q3 2024 | 715 | β | 103.45% | β | $11.99B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 25, 2026 | Chawla Sona | Buy | 2K | $53.39 | $107K |
| Jun 25, 2026 | Shinder Marcella | Buy | 574 | $52.01 | $30K |
| Jun 24, 2026 | ONeil Mark F | Buy | 5K | $52.36 | $251K |
| Jun 22, 2026 | Barr Keith | Buy | 9K | $53.01 | $498K |
| Jun 22, 2026 | Bensen Peter J | Buy | 3K | $52.20 | $131K |
Quick answers to the most common questions about buying KMX stock.
Based on Q2 2026 13F filings, institutional ownership of CarMax, Inc. stands at 107.7%, held across 561 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of KMX, with approximately 17,092,089 shares worth $0.90B as of Q2 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of KMX, including TWO SIGMA INVESTMENTS, LP, MILLENNIUM MANAGEMENT LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for KMX is 51 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
84 institutions opened new positions in KMX during Q2 2026, while 79 fully exited. 333 added to existing positions and 126 trimmed.
KMX institutional ownership fell by 4.48 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 45.2% of all reported 13F value in KMX, and the top 25 account for 69.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
CarMax, Inc. (KMX) Institutional Ownership