Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
526 institutional managers reported holding KMX for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 53%. 89 opened new positions; 90 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 17.26M | 11.83% | $717.7M | trimmed -3.3% | ≤2013 |
| Vanguard Group | 14.84M | 10.17% | $617.0M | trimmed -1.7% | ≤2013 |
| AQR Capital | 10.06M | 6.90% | $418.4M | added +26.9% | 2023 Q1 |
| Starboard Value (focused) | 6.20M | 4.25% | $257.9M | opened | 2026 Q1 |
| SRS Investment Management, LLC (focused) | 5.65M | 3.88% | $235.1M | unchanged | 2025 Q3 |
| Two Sigma | 5.35M | 3.67% | $222.4M | added +80.2% | 2022 Q4 |
| State Street | 4.89M | 3.35% | $203.2M | trimmed -3.3% | ≤2013 |
| Janus Henderson | 4.58M | 3.14% | $190.5M | added +1.1% | ≤2013 |
| PRIMECAP Management | 4.36M | 2.99% | $181.3M | unchanged | ≤2013 |
| Dimensional Fund Advisors | 4.28M | 2.93% | $177.8M | added +7.3% | ≤2013 |
| Apollo Management | 4.14M | 2.84% | $172.4M | trimmed -17.9% | 2025 Q4 |
| First Manhattan CO. LLC. | 3.09M | 2.12% | $128.4M | added +1.9% | ≤2013 |
| Baird Financial Group, INC. | 3.07M | 2.10% | $127.6M | added +15.3% | 2017 Q3 |
| D. E. Shaw | 2.92M | 2.00% | $121.5M | trimmed -19.8% | 2022 Q4 |
| Geode Capital | 2.55M | 1.75% | $106.3M | unchanged | ≤2013 |
| Morgan Stanley | 2.53M | 1.74% | $105.4M | added +10.2% | ≤2013 |
| Diamond Hill Capital Management INC | 2.47M | 1.69% | $102.8M | trimmed -41.3% | 2022 Q4 |
| Manufacturers Life Insurance Company, THE | 2.40M | 1.64% | $99.7M | trimmed -1% | ≤2013 |
| Vulcan Value Partners, LLC (focused) | 2.20M | 1.51% | $91.7M | trimmed -24.7% | 2024 Q1 |
| UBS | 2.05M | 1.41% | $85.2M | added +4.2% | ≤2013 |
| Bank OF America CORP /DE/ | 1.69M | 1.16% | $70.2M | added +61.7% | ≤2013 |
| Goldman Sachs | 1.60M | 1.10% | $66.6M | added +239.8% | ≤2013 |
| Focus Partners Wealth | 1.49M | 1.02% | $62.1M | added +94.8% | 2023 Q4 |
| Charles Schwab Investment Management | 1.43M | 0.98% | $59.7M | added +6.5% | ≤2013 |
| American Century Companies INC | 1.39M | 0.95% | $57.8M | added +90% | 2019 Q4 |
| Millennium Management | 1.31M | 0.90% | $54.7M | added +97% | 2013 Q3 |
| Renaissance Technologies | 1.25M | 0.85% | $51.8M | added +8.4% | 2024 Q3 |
| Northern Trust | 1.09M | 0.75% | $45.3M | unchanged | ≤2013 |
| Invesco | 1.05M | 0.72% | $43.8M | trimmed -7.4% | ≤2013 |
| Gotham Asset Management | 984.5k | 0.68% | $40.9M | added +130.9% | 2021 Q3 |
| Rings Capital Management LLC (focused) | 949.0k | 0.65% | $39.5M | unchanged | 2022 Q4 |
| Envestnet Asset Management INC | 917.8k | 0.63% | $38.2M | trimmed -31.7% | ≤2013 |
| Silver Heights Capital Management INC (focused) | 917.7k | 0.63% | $38.2M | trimmed -1.4% | 2016 Q4 |
| Holocene Advisors | 826.1k | 0.57% | $34.4M | opened | 2026 Q1 |
| BNY Mellon | 817.8k | 0.56% | $34.0M | trimmed -3.7% | ≤2013 |
| Woodline Partners LP | 765.2k | 0.53% | $31.8M | added +1052.7% | 2025 Q4 |
| Principal Financial Group INC | 704.3k | 0.48% | $29.3M | trimmed -7.8% | ≤2013 |
| IEQ Capital, LLC | 621.3k | 0.43% | $25.8M | added +87.5% | 2022 Q4 |
| Davenport & CO LLC | 616.1k | 0.42% | $25.6M | added +349% | ≤2013 |
| Ameriprise Financial INC | 597.3k | 0.41% | $24.8M | trimmed -20.2% | ≤2013 |
| Ariel Investments, LLC | 561.9k | 0.39% | $23.4M | unchanged | 2019 Q1 |
| Framtiden Holdings Management CO LLC (focused) | 540.0k | 0.37% | $22.5M | unchanged | 2025 Q4 |
| Public Sector Pension Investment Board | 507.3k | 0.35% | $21.1M | unchanged | ≤2013 |
| Man Group | 501.8k | 0.34% | $20.9M | added +646.3% | 2024 Q1 |
| Citadel Advisors | 485.1k | 0.33% | $20.2M | trimmed -2.7% | ≤2013 |
| Nexus Investment Management ULC | 464.8k | 0.32% | $19.3M | added +2.7% | ≤2013 |
| FMR (Fidelity) | 463.2k | 0.32% | $19.3M | trimmed -31.8% | ≤2013 |
| Jane Street | 457.7k | 0.31% | $19.0M | trimmed -47.1% | 2014 Q1 |
| BNP Paribas Financial Markets | 454.0k | 0.31% | $18.9M | trimmed -40.2% | ≤2013 |
| Eubel Brady & Suttman Asset Management INC | 446.9k | 0.31% | $18.6M | added +16.7% | 2022 Q2 |
Largest 50 of 526 shown; the full ranked, searchable register is at boothcheck.com/holders/KMX. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.