CarMax, Inc.
US ˙ NYSE ˙ US1431301027

SecurityKMX / CarMax, Inc.
InstitutionFirst Manhattan Co
Latest Disclosed Ownership105,339 shares
Latest Disclosed Value $ 4,379,996
First Manhattan Co reports 1.06% decrease in ownership of KMX / CarMax, Inc.

On May 15, 2026 - First Manhattan Co filed a 13F-HR form disclosing ownership of 105,339 shares of CarMax, Inc. (US:KMX) valued at $4,379,996 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 106,467 shares of CarMax, Inc.. This represents a change in shares of -1.06% during the quarter. The current value of the position is $4,848,754 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CARMAX COM 143130102 105,339 -1,128 -1.06 4,380 6.47 0.0121
2026-02-17 2025-12-31 13F CARMAX COM 143130102 106,467 -48,567 -31.33 4,114 -40.87 0.0108
2025-11-14 2025-09-30 13F CARMAX COM 143130102 155,034 -780 -0.50 6,956 -33.58 0.0184
2025-08-14 2025-06-30 13F CARMAX COM 143130102 155,814 -2,165 -1.37 10,472 -14.92 0.0296
2025-05-15 2025-03-31 13F CARMAX COM 143130102 157,979 -1,150 -0.72 12,310 -5.39 0.0359
2025-02-14 2024-12-31 13F CARMAX COM 143130102 159,129 6,992 4.60 13,010 10.52 0.0382
2024-11-14 2024-09-30 13F CARMAX COM 143130102 152,137 -75 -0.05 11,772 5.46 0.0349
2024-08-15 2024-06-30 13F/A-1 CARMAX COM 143130102 152,212 19,334 14.55 11,163 -3.56 0.0358
2024-08-14 2024-06-30 13F CARMAX COM 143130102 152,212 19,334 11,163 0.0358
2024-05-15 2024-03-31 13F CARMAX COM 143130102 132,878 -1,450 -1.08 11,575 12.29 0.0375
2024-02-13 2023-12-31 13F CARMAX COM 143130102 134,328 1,340 1.01 10,308 9.59 0.0358
2023-11-14 2023-09-30 13F CARMAX COM 143130102 132,988 -1,886 -1.40 9,406 -16.67 0.0347
2023-08-14 2023-06-30 13F CARMAX COM 143130102 134,874 271 0.20 11,289 30.47 0.0414
2023-05-15 2023-03-31 13F CARMAX COM 143130102 134,603 -5,587 -3.99 8,652 1.36 0.0332
2023-02-14 2022-12-31 13F CARMAX COM 143130102 140,190 -26,770 -16.03 8,536 -22.55 0.0313
2022-11-14 2022-09-30 13F CARMAX COM 143130102 166,960 -824 -0.49 11,022 -27.40 0.0467
2022-08-15 2022-06-30 13F CARMAX COM 143130102 167,784 6,055 3.74 15,181 -2.70 0.0612
2022-05-16 2022-03-31 13F CARMAX COM 143130102 161,729 49,283 43.83 15,603 6.56 0.0510
2022-02-14 2021-12-31 13F CARMAX COM 143130102 112,446 -2,100 -1.83 14,643 -0.10 0.0483
2021-11-15 2021-09-30 13F CARMAX COM 143130102 114,546 -6,526 -5.39 14,657 -6.26 0.0540
2021-08-16 2021-06-30 13F CARMAX COM 143130102 121,072 20,455 20.33 15,636 17.15 0.0571
2021-05-14 2021-03-31 13F CARMAX COM 143130102 100,617 -300 -0.30 13,347 40.02 0.0575
2021-02-16 2020-12-31 13F CARMAX COM 143130102 100,917 -1,550 -1.51 9,532 1.22 0.0456
2020-11-12 2020-09-30 13F CARMAX COMMON 143130102 102,467 -2,305 -2.20 9,417 0.37 0.0485
2020-08-14 2020-06-30 13F CARMAX COMMON 143130102 104,772 -1,025 -0.97 9,382 64.74 0.0542
2020-05-06 2020-03-31 13F CARMAX COMMON 143130102 105,797 -6,650 -5.91 5,695 -42.23 0.0369
2020-02-13 2019-12-31 13F CARMAX COMMON 143130102 112,447 597 0.53 9,858 0.16 0.0495
2019-11-13 2019-09-30 13F CARMAX COMMON 143130102 111,850 -14,670 -11.60 9,842 -10.41 0.0542
2019-08-16 2019-06-30 13F CARMAX COMMON 143130102 126,520 -6,195 -4.67 10,985 18.59 0.0610
2019-04-12 2019-03-31 13F CARMAX COMMON 143130102 132,715 -247,805 -65.12 9,263 -61.19 0.0535
2019-01-30 2018-12-31 13F CARMAX COMMON 143130102 380,520 5,080 1.35 23,870 -14.85 0.1486
2018-10-15 2018-09-30 13F CARMAX COMMON 143130102 375,440 330 0.09 28,034 2.56 0.1494
2018-08-01 2018-06-30 13F CARMAX COMMON 143130102 375,110 100 0.03 27,334 17.68 0.1576
2018-04-20 2018-03-31 13F CARMAX COMMON 143130102 375,010 208,035 124.59 23,228 116.92 0.1322
2018-01-22 2017-12-31 13F CARMAX COMMON 143130102 166,975 2,600 1.58 10,708 -14.07 0.0587
2017-10-25 2017-09-30 13F CARMAX COMMON 143130102 164,375 -1,500 -0.90 12,461 19.13 0.0714
2017-08-10 2017-06-30 13F/A-2 CARMAX COMMON 143130102 165,875 28,250 20.53 10,460 28.34 0.0610
2017-08-01 2017-06-30 13F/A-1 CARMAX COMMON 143130102 165,875 0 10,460 0.0610
2017-07-28 2017-06-30 13F CARMAX COMMON 143130102 165,875 28,250 10,460
2017-04-25 2017-03-31 13F/A-1 CARMAX COMMON 143130102 137,625 -341 -0.25 8,150 -8.25 0.0484
2017-04-24 2017-03-31 13F CARMAX COMMON 143130102 145,543 7,764
2017-01-25 2016-12-31 13F CARMAX COMMON 143130102 137,966 -7,577 -5.21 8,883 14.41 0.0540
2016-10-20 2016-09-30 13F CARMAX COMMON 143130102 145,543 -726 -0.50 7,764 8.27 0.0474
2016-07-14 2016-06-30 13F CARMAX COMMON 143130102 146,269 458 0.31 7,171 -3.74 0.0440
2016-04-22 2016-03-31 13F CARMAX COMMON 143130102 145,811 10,583 7.83 7,450 2.08 0.0458
2016-01-20 2015-12-31 13F CARMAX COMMON 143130102 135,228 43,725 47.79 7,298 34.48 0.0448
2015-10-26 2015-09-30 13F CARMAX COMMON 143130102 91,503 -1,650 -1.77 5,427 -12.00 0.0349
2015-07-17 2015-06-30 13F CARMAX COMMON 143130102 93,153 -7,147 -7.13 6,167 -10.89 0.0364
2015-04-30 2015-03-31 13F CARMAX COMMON 143130102 100,300 -850 -0.84 6,921 2.78 0.0399
2015-01-20 2014-12-31 13F CARMAX COMMON 143130102 101,150 900 0.90 6,734 44.63 0.0381
2014-10-23 2014-09-30 13F CARMAX COMMON 143130102 100,250 0 0.00 4,656 -10.70 0.0271
2014-08-14 2014-06-30 13F/A-1 CARMAX COMMON 143130102 100,250 7,900 8.55 5,214 20.67 0.0330
2014-05-16 2014-03-31 13F CARMAX COMMON 143130102 92,350 -200 -0.22 4,321 -0.69 0.0285
2014-02-04 2013-12-31 13F CARMAX COMMON 143130102 92,550 0 0.00 4,351 -2.99 0.0288
2013-10-29 2013-09-30 13F CARMAX COMMON 143130102 92,550 0 0.00 4,485 1.70 0.0313
2013-08-13 2013-06-30 13F CARMAX COMMON 143130102 92,550 92,550 4,410 0.0303
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.