Who owns KMX (KMX)
Which tracked institutional funds hold KMX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See KMX company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
155 tracked funds added or opened KMX while 103 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
KMX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes KMX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in KMX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 543 tracked filers holding KMX, 273 increased or opened the position and 283 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in KMX between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 31
- VANGUARD PORTFOLIO MANAGEMENT LLC$303M
- VANGUARD CAPITAL MANAGEMENT LLC$266M
- Starboard Value LP$258M
- VANGUARD FIDUCIARY TRUST CO$37M
- Holocene Advisors, LP$34M
- Endure Capital Management, LLC$15M
Full exits 37
- VANGUARD GROUP INC$572M
- TWO SIGMA ADVISERS, LP$112M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$68M
- NOMURA HOLDINGS INC$30M
- MANE GLOBAL CAPITAL MANAGEMENT LP$29M
- HRT FINANCIAL LP$9M
Largest adds
- NORGES BANK$278M
- TWO SIGMA INVESTMENTS, LP$108M
- AQR CAPITAL MANAGEMENT LLC$106M
- GOLDMAN SACHS GROUP INC$48M
- Focus Partners Wealth$32M
- BANK OF AMERICA CORP /DE/$30M
Largest trims
- DIAMOND HILL CAPITAL MANAGEMENT INC$60M
- BlackRock, Inc.$49M
- TUDOR INVESTMENT CORP ET AL$25M
- Apollo Management Holdings, L.P.$23M
- Vulcan Value Partners, LLC$22M
- CAPITAL FUND MANAGEMENT S.A.$20M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 15,418,924 | $641M | 8.2% | 2026-Q1 |
| NORGES BANK added | 5,606,458 | $437M | 5.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 10,055,683 | $412M | 5.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 7,276,272 | $303M | 3.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 6,386,764 | $266M | 3.4% | 2026-Q1 |
| Starboard Value LP new | 6,201,362 | $258M | 3.3% | 2026-Q1 |
| SRS Investment Management, LLC added | 5,651,674 | $235M | 3.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 5,347,097 | $222M | 2.8% | 2026-Q1 |
| STATE STREET CORP trimmed | 4,885,060 | $203M | 2.6% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 4,580,807 | $190M | 2.4% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 4,358,146 | $181M | 2.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 4,275,663 | $178M | 2.3% | 2026-Q1 |
| Apollo Management Holdings, L.P. trimmed | 4,144,741 | $172M | 2.2% | 2026-Q1 |
| Baird Financial Group, Inc. added | 3,068,452 | $128M | 1.6% | 2026-Q1 |
| First Pacific Advisors, LP added | 2,981,709 | $124M | 1.6% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 2,920,417 | $121M | 1.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 2,554,767 | $106M | 1.4% | 2026-Q1 |
| MORGAN STANLEY added | 2,534,739 | $105M | 1.3% | 2026-Q1 |
| DIAMOND HILL CAPITAL MANAGEMENT INC trimmed | 2,470,596 | $103M | 1.3% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 2,398,257 | $100M | 1.3% | 2026-Q1 |
| Vulcan Value Partners, LLC trimmed | 2,204,876 | $92M | 1.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,687,359 | $70M | 0.9% | 2026-Q1 |
| UBS Group AG added | 1,614,295 | $67M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,601,522 | $67M | 0.8% | 2026-Q1 |
| Focus Partners Wealth added | 1,492,859 | $62M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,434,590 | $60M | 0.8% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,390,912 | $58M | 0.7% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,314,833 | $55M | 0.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,245,000 | $52M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,089,126 | $45M | 0.6% | 2026-Q1 |
| Gotham Asset Management, LLC added | 984,504 | $41M | 0.5% | 2026-Q1 |
| Rings Capital Management LLC | 949,000 | $39M | 0.5% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 917,829 | $38M | 0.5% | 2026-Q1 |
| Silver Heights Capital Management Inc trimmed | 917,698 | $38M | 0.5% | 2026-Q1 |
| Invesco Ltd. trimmed | 915,678 | $38M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 881,698 | $37M | 0.5% | 2026-Q1 |
| Holocene Advisors, LP trimmed | 826,142 | $34M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 817,830 | $34M | 0.4% | 2026-Q1 |
| Woodline Partners LP added | 765,226 | $32M | 0.4% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 687,007 | $29M | 0.4% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 621,298 | $26M | 0.3% | 2026-Q1 |
| DAVENPORT & Co LLC added | 616,133 | $26M | 0.3% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 597,278 | $25M | 0.3% | 2026-Q1 |
| ARIEL INVESTMENTS, LLC trimmed | 561,947 | $23M | 0.3% | 2026-Q1 |
| Framtiden Holdings Management Co LLC | 540,000 | $22M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board trimmed | 507,306 | $21M | 0.3% | 2026-Q1 |
| Man Group plc added | 501,796 | $21M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 485,088 | $20M | 0.3% | 2026-Q1 |
| Nexus Investment Management ULC added | 464,815 | $19M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 457,728 | $19M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 450,570 | $19M | 0.2% | 2026-Q1 |
| EUBEL BRADY & SUTTMAN ASSET MANAGEMENT INC added | 446,878 | $19M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 437,628 | $18M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 434,886 | $18M | 0.2% | 2026-Q1 |
| Welch & Forbes LLC trimmed | 426,833 | $18M | 0.2% | 2026-Q1 |
| Mount Capital Ltd | 410,400 | $17M | 0.2% | 2026-Q1 |
| Kiltearn Partners LLP trimmed | 394,700 | $16M | 0.2% | 2026-Q1 |
| Trexquant Investment LP trimmed | 379,714 | $16M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 377,493 | $16M | 0.2% | 2026-Q1 |
| Endure Capital Management, LLC new | 365,447 | $15M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 359,513 | $15M | 0.2% | 2026-Q1 |
| Mariner, LLC added | 356,675 | $15M | 0.2% | 2026-Q1 |
| Cerity Partners LLC added | 346,759 | $14M | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 336,900 | $14M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 331,434 | $14M | 0.2% | 2026-Q1 |
| CLIFFORD SWAN INVESTMENT COUNSEL LLC added | 324,084 | $13M | 0.2% | 2026-Q1 |
| FMR LLC trimmed | 321,297 | $13M | 0.2% | 2026-Q1 |
| MARSHALL WACE, LLP added | 319,573 | $13M | 0.2% | 2026-Q1 |
| GAGNON SECURITIES LLC trimmed | 309,699 | $13M | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 291,671 | $12M | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP added | 288,409 | $12M | 0.2% | 2026-Q1 |
| Broad Run Investment Management, LLC trimmed | 284,385 | $12M | 0.2% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 14,794,763 | $572M | 7.3% | 2025-Q4 stale |
| FIDUCIARY MANAGEMENT INC /WI/ added | 3,249,561 | $146M | 1.9% | 2025-Q3 stale |
| TURTLE CREEK ASSET MANAGEMENT INC. added | 2,707,477 | $121M | 1.6% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 2,908,400 | $112M | 1.4% | 2025-Q4 stale |
| COOKE & BIELER LP added | 2,241,359 | $101M | 1.3% | 2025-Q3 stale |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. added | 1,335,111 | $90M | 1.1% | 2025-Q2 stale |
| Giverny Capital Inc. added | 1,670,114 | $75M | 1.0% | 2025-Q3 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 1,772,526 | $68M | 0.9% | 2025-Q4 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 981,905 | $44M | 0.6% | 2025-Q3 stale |
| HAWK RIDGE CAPITAL MANAGEMENT LP new | 973,980 | $44M | 0.6% | 2025-Q3 stale |
| ThornTree Capital Partners LP added | 606,928 | $41M | 0.5% | 2025-Q2 stale |
| DF DENT & CO INC trimmed | 513,568 | $35M | 0.4% | 2025-Q2 stale |
| Maple Rock Capital Partners Inc. new | 433,528 | $34M | 0.4% | 2025-Q1 stale |
| NOMURA HOLDINGS INC added | 778,063 | $30M | 0.4% | 2025-Q4 stale |
| WEITZ INVESTMENT MANAGEMENT, INC. | 649,400 | $29M | 0.4% | 2025-Q3 stale |
| MANE GLOBAL CAPITAL MANAGEMENT LP added | 749,448 | $29M | 0.4% | 2025-Q4 stale |
| CHECK CAPITAL MANAGEMENT INC/CA added | 600,043 | $27M | 0.3% | 2025-Q3 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 359,564 | $24M | 0.3% | 2025-Q2 stale |
| Aureus Asset Management, LLC trimmed | 305,941 | $24M | 0.3% | 2025-Q1 stale |
| Candriam S.C.A. added | 494,079 | $22M | 0.3% | 2025-Q3 stale |
| J. Goldman & Co LP added | 470,457 | $21M | 0.3% | 2025-Q3 stale |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 269,116 | $21M | 0.3% | 2025-Q1 stale |
| Makaira Partners LLC | 272,203 | $18M | 0.2% | 2025-Q2 stale |
| JUPITER ASSET MANAGEMENT LTD added | 260,589 | $18M | 0.2% | 2025-Q2 stale |
| SCHWERIN BOYLE CAPITAL MANAGEMENT INC trimmed | 372,156 | $17M | 0.2% | 2025-Q3 stale |
| Philadelphia Financial Management of San Francisco, LLC new | 210,082 | $16M | 0.2% | 2025-Q1 stale |
| Azora Capital LP trimmed | 364,571 | $16M | 0.2% | 2025-Q3 stale |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 342,951 | $15M | 0.2% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.