CARMAX INC (KMX) Top Institutional Shareholders
CARMAX INC (KMX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $6.27B in KMX holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of KMX tracked by InsiderSet, reporting ownership valued at approximately $717.57M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $818.52M, representing an estimated gain of +14.07% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed KMX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Aqr Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in CARMAX INC (KMX).
This page ranks the largest institutional KMX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
541
Total Reported Value
$6.27B
Largest Holder
Blackrock, Inc.
Largest Position
$717.57M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
76
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 17,257,461 | $717,565,199 | $818,521,375 | +$100,956,176 | +14.07% | |
| Aqr Capital Management Llc | 0.19% | 10,060,502 | $412,581,185 | $477,169,610 | +$64,588,425 | +15.65% | |
| Vanguard Portfolio Management Llc | 0.02% | 7,276,272 | $302,547,390 | $345,113,581 | +$42,566,191 | +14.07% | |
| Vanguard Capital Management Llc | 0.01% | 6,386,764 | $265,561,647 | $302,924,217 | +$37,362,570 | +14.07% | |
| Starboard Value Lp | 5.64% | 6,201,362 | $257,852,632 | $294,130,600 | +$36,277,968 | +14.07% | |
| Srs Investment Management, Llc | 2.48% | 5,651,674 | $234,996,605 | $268,058,898 | +$33,062,293 | +14.07% | |
| Two Sigma Investments, Lp | 0.18% | 5,347,097 | $222,332,293 | $253,612,811 | +$31,280,518 | +14.07% | |
| State Street Corp | 0.01% | 4,885,060 | $203,120,795 | $231,698,396 | +$28,577,601 | +14.07% | |
| Janus Henderson Group Plc | 0.09% | 4,580,807 | $190,470,595 | $217,267,676 | +$26,797,081 | +14.07% | |
| Primecap Management Co/Ca/ | 0.14% | 4,358,146 | $181,211,709 | $206,706,865 | +$25,495,156 | +14.07% | |
| Dimensional Fund Advisors Lp | 0.04% | 4,275,663 | $177,766,604 | $202,794,696 | +$25,028,092 | +14.08% | |
| Apollo Management Holdings, L.P. | 2.88% | 4,144,741 | $172,338,331 | $196,585,066 | +$24,246,735 | +14.07% | |
| Baird Financial Group, Inc. | 0.20% | 3,068,452 | $127,586,223 | $145,536,678 | +$17,950,455 | +14.07% | |
| First Pacific Advisors, Lp | 1.74% | 2,981,709 | $123,979,460 | $141,422,458 | +$17,442,998 | +14.07% | |
| D. E. Shaw & Co., Inc. | 0.10% | 2,920,417 | $121,430,939 | $138,515,378 | +$17,084,439 | +14.07% | |
| Geode Capital Management, Llc | 0.01% | 2,554,767 | $106,254,114 | $121,172,599 | +$14,918,485 | +14.04% | |
| Morgan Stanley | 0.01% | 2,534,739 | $105,394,578 | $120,222,671 | +$14,828,093 | +14.07% | |
| Diamond Hill Capital Management Inc | 0.64% | 2,470,596 | $102,727,382 | $117,180,368 | +$14,452,986 | +14.07% | |
| Manufacturers Life Insurance Company, The | 0.09% | 2,398,257 | $99,719,526 | $113,749,330 | +$14,029,804 | +14.07% | |
| Vulcan Value Partners | C.T. Fitzpatrick | 2.43% | 2,204,876 | $91,678,744 | $104,577,269 | +$12,898,525 | +14.07% |
| Bank Of America Corp | 0.01% | 1,687,359 | $70,160,391 | $80,031,437 | +$9,871,046 | +14.07% | |
| Ubs Group Ag | 0.01% | 1,614,295 | $67,122,387 | $76,566,012 | +$9,443,625 | +14.07% | |
| Goldman Sachs Group Inc | 0.01% | 1,601,522 | $66,591,291 | $75,960,188 | +$9,368,897 | +14.07% | |
| Focus Partners Wealth | 0.07% | 1,492,859 | $62,073,112 | $70,806,302 | +$8,733,190 | +14.07% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,434,590 | $59,650,252 | $68,042,604 | +$8,392,352 | +14.07% | |
| American Century Companies Inc | 0.03% | 1,390,912 | $57,834,120 | $65,970,956 | +$8,136,836 | +14.07% | |
| Millennium Management Llc | 0.04% | 1,314,833 | $54,670,756 | $62,362,529 | +$7,691,773 | +14.07% | |
| Storebrand Asset Management As | 0.02% | 563,987 | $52,220,806 | $26,749,903 | -$25,470,903 | -48.78% | |
| Renaissance Technologies LLC | Jim Simons | 0.08% | 1,245,000 | $51,767,100 | $59,050,350 | +$7,283,250 | +14.07% |
| Northern Trust Corp | 0.01% | 1,089,126 | $45,285,860 | $51,657,246 | +$6,371,386 | +14.07% | |
| Invesco Ltd. | 0.01% | 1,052,539 | $43,764,572 | $49,921,925 | +$6,157,353 | +14.07% | |
| Gotham Asset Management, Llc | 0.13% | 984,504 | $40,935,676 | $46,695,025 | +$5,759,349 | +14.07% | |
| Rings Capital Management Llc | 21.20% | 949,000 | $39,459,420 | $45,011,070 | +$5,551,650 | +14.07% | |
| Envestnet Asset Management Inc | 0.01% | 917,829 | $38,163,324 | $43,532,629 | +$5,369,305 | +14.07% | |
| Silver Heights Capital Management Inc | 14.66% | 917,698 | $38,157,883 | $43,526,416 | +$5,368,533 | +14.07% | |
| Vanguard Fiduciary Trust Co | 0.01% | 881,698 | $36,661,003 | $41,818,936 | +$5,157,933 | +14.07% | |
| Holocene Advisors, Lp | 0.08% | 826,142 | $34,350,984 | $39,183,915 | +$4,832,931 | +14.07% | |
| Bank Of New York Mellon Corp | 0.01% | 817,830 | $34,005,389 | $38,789,677 | +$4,784,288 | +14.07% | |
| Woodline Partners Lp | 0.12% | 765,226 | $31,818,097 | $36,294,669 | +$4,476,572 | +14.07% | |
| Principal Financial Group Inc | 0.02% | 687,007 | $28,565,752 | $32,584,742 | +$4,018,990 | +14.07% | |
| Ieq Capital, Llc | 0.12% | 621,298 | $25,833,564 | $29,468,164 | +$3,634,600 | +14.07% | |
| Davenport & Co Llc | 0.14% | 616,133 | $25,618,815 | $29,223,188 | +$3,604,373 | +14.07% | |
| Ameriprise Financial Inc | 0.01% | 597,278 | $24,836,026 | $28,328,896 | +$3,492,870 | +14.06% | |
| Ariel Appreciation Fund | John W. Rogers Jr. | 0.26% | 561,947 | $23,365,756 | $26,653,146 | +$3,287,390 | +14.07% |
| Framtiden Holdings Management Co Llc | 21.98% | 540,000 | $22,453,200 | $25,612,200 | +$3,159,000 | +14.07% | |
| Public Sector Pension Investment Board | 0.07% | 507,306 | $21,093,783 | $24,061,524 | +$2,967,741 | +14.07% | |
| Man Group Plc | 0.04% | 501,796 | $20,864,678 | $23,800,184 | +$2,935,506 | +14.07% | |
| Citadel Advisors Llc | 0.01% | 485,088 | $20,169,959 | $23,007,724 | +$2,837,765 | +14.07% | |
| Nexus Investment Management Ulc | 2.70% | 464,815 | $19,327,008 | $22,046,175 | +$2,719,167 | +14.07% | |
| Fmr Llc | 0.00% | 463,191 | $19,259,470 | $21,969,149 | +$2,709,679 | +14.07% |
Frequently asked questions about KMX
Who owns the most KMX stock?
The largest holders of KMX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CARMAX INC (KMX).
Is KMX widely held by superinvestors?
Many widely followed stocks like KMX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly KMX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.