CarMax, Inc.
US ˙ NYSE ˙ US1431301027

SecurityKMX / CarMax, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership4,580,807 shares
Latest Disclosed Value $ 190,470,595
Janus Henderson Group Plc reports 1.10% increase in ownership of KMX / CarMax, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 4,580,807 shares of CarMax, Inc. (US:KMX) valued at $190,469,955 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,530,820 shares of CarMax, Inc.. This represents a change in shares of 1.10% during the quarter. The current value of the position is $215,985,050 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)
2026-05-18 2026-03-31 13F/A-1 CARMAX COM 143130102 4,580,807 49,987 1.10 190,471 8.80 0.0909
2026-05-15 2026-03-31 13F CARMAX COM 143130102 4,580,807 49,987 190,471 0.0353
2026-02-17 2025-12-31 13F CARMAX COM 143130102 4,530,820 -344,409 -7.06 175,069 -19.97 0.0784
2025-11-14 2025-09-30 13F CARMAX COM 143130102 4,875,229 46,760 0.97 218,752 -32.59 0.0999
2025-08-14 2025-06-30 13F CARMAX COM 143130102 4,828,469 84,277 1.78 324,522 -9.98 0.1591
2025-05-15 2025-03-31 13F CARMAX COM 143130102 4,744,192 72,242 1.55 360,510 -5.62 0.1976
2025-02-14 2024-12-31 13F CARMAX COM 143130102 4,671,950 29,715 0.64 381,978 6.34 0.1942
2024-11-14 2024-09-30 13F CARMAX COM 143130102 4,642,235 28,466 0.62 359,216 6.16 0.1839
2024-08-14 2024-06-30 13F CARMAX COM 143130102 4,613,769 19,703 0.43 338,374 -15.45 0.1812
2024-05-15 2024-03-31 13F CARMAX COM 143130102 4,594,066 -17,498 -0.38 400,189 13.08 0.2183
2024-02-14 2023-12-31 13F CARMAX COM 143130102 4,611,564 25,671 0.56 353,891 9.10 0.2111
2023-11-14 2023-09-30 13F CARMAX COM 143130102 4,585,893 7,845 0.17 324,360 -15.35 0.2124
2023-08-14 2023-06-30 13F CARMAX COM 143130102 4,578,048 37,666 0.83 383,182 31.29 0.2383
2023-05-15 2023-03-31 13F CARMAX COM 143130102 4,540,382 -2,126 -0.05 291,856 5.52 0.1924
2023-02-14 2022-12-31 13F CARMAX COM 143130102 4,542,508 41,857 0.93 276,593 -6.91 0.1976
2023-01-13 2022-09-30 13F/A-1 CARMAX COM 143130102 4,500,651 5,550 0.12 297,133 -26.94 0.2226
2022-11-14 2022-09-30 13F CARMAX COM 143130102 4,500,651 5,550 297,133 0.0755
2022-08-15 2022-06-30 13F CARMAX COM 143130102 4,495,101 -3,714 -0.08 406,718 -6.30 0.2804
2022-05-16 2022-03-31 13F CARMAX COM 143130102 4,498,815 -47,331 -1.04 434,046 -26.69 0.2096
2022-02-14 2021-12-31 13F CARMAX COM 143130102 4,546,146 39,524 0.88 592,045 2.67 0.2469
2021-11-16 2021-09-30 13F CARMAX COM 143130102 4,506,622 146,763 3.37 576,667 2.41 0.2522
2021-08-16 2021-06-30 13F CARMAX COM 143130102 4,359,859 209,627 5.05 563,076 2.27 0.2410
2021-05-17 2021-03-31 13F CARMAX COM 143130102 4,150,232 19,950 0.48 550,570 41.12 0.2514
2021-02-16 2020-12-31 13F CARMAX COM 143130102 4,130,282 -331,372 -7.43 390,145 -4.86 0.1813
2020-11-16 2020-09-30 13F CARMAX COM 143130102 4,461,654 -10,790 -0.24 410,070 2.39 0.2138
2020-08-14 2020-06-30 13F CARMAX COM 143130102 4,472,444 -508,086 -10.20 400,508 49.39 0.2248
2020-05-14 2020-03-31 13F CARMAX COM 143130102 4,980,530 2,454,260 97.15 268,102 21.05 0.1845
2020-02-18 2019-12-31 13F CARMAX COM 143130102 2,526,270 256,851 11.32 221,479 10.90 0.1134
2019-11-14 2019-09-30 13F CARMAX COM 143130102 2,269,419 2,217,551 4,275.37 199,709 4,336.01 0.1082
2019-07-31 2019-06-30 13F CARMAX COM 143130102 51,868 -1,251 -2.36 4,502 21.48 0.0025
2019-04-30 2019-03-31 13F CARMAX COM 143130102 53,119 1,078 2.07 3,706 13.51 0.0021
2019-02-06 2018-12-31 13F CARMAX COM 143130102 52,041 7,406 16.59 3,265 -2.04 0.0021
2018-11-09 2018-09-30 13F CARMAX COM 143130102 44,635 1,739 4.05 3,333 6.62 0.0018
2018-08-10 2018-06-30 13F CARMAX COM 143130102 42,896 -8,304 -16.22 3,126 -1.45 0.0018
2018-05-14 2018-03-31 13F CARMAX COM 143130102 51,200 -38,193 -42.72 3,172 -44.67 0.0019
2018-03-12 2017-12-31 13F/A-1 CARMAX COM 143130102 89,393 17,193 23.81 5,733 4.75 0.0035
2018-02-09 2017-12-31 13F CARMAX COM 143130102 89,393 17,193 5,733
2017-11-14 2017-09-30 13F CARMAX COM 143130102 72,200 2,734 3.94 5,473 24.93 0.0035
2017-08-17 2017-06-30 13F/A-1 CARMAX COM 143130102 69,466 50,124 259.15 4,381 282.62 0.0030
2017-08-14 2017-06-30 13F CARMAX COM 143130102 69,466 50,124 4,381
2017-05-03 2017-03-31 13F CARMAX COM 143130102 19,342 0 0.00 1,145 -8.11 0.0080
2017-01-30 2016-12-31 13F CARMAX COM 143130102 19,342 3,141 19.39 1,246 44.21 0.0092
2016-10-24 2016-09-30 13F CARMAX COM 143130102 16,201 -12,872 -44.27 864 -39.37 0.0064
2016-07-29 2016-06-30 13F CARMAX COM 143130102 29,073 0 0.00 1,425 -4.10 0.0118
2016-05-12 2016-03-31 13F CARMAX COM 143130102 29,073 0 0.00 1,486 -5.29 0.0121
2016-02-03 2015-12-31 13F CARMAX COM 143130102 29,073 0 0.00 1,569 -8.99 0.0126
2015-11-16 2015-09-30 13F CARMAX COM 143130102 29,073 0 0.00 1,724 -10.44 0.0152
2015-08-17 2015-06-30 13F CARMAX COM 143130102 29,073 0 0.00 1,925 -3.94 0.0151
2015-06-02 2015-03-31 13F/A-1 CARMAX COM 143130102 29,073 0 0.00 2,004 3.51 0.0155
2015-05-15 2015-03-31 13F CARMAX COM 143130102 29,073 2,004
2015-02-12 2014-12-31 13F CARMAX COM 143130102 29,073 0 0.00 1,936 43.30 0.0140
2014-11-12 2014-09-30 13F CARMAX COM 143130102 29,073 0 0.00 1,351 -10.65 0.0127
2014-08-13 2014-06-30 13F CARMAX COM 143130102 29,073 0 0.00 1,512 11.18 0.0141
2014-05-08 2014-03-31 13F CARMAX COM 143130102 29,073 4,500 18.31 1,360 17.75 0.0132
2014-01-14 2013-12-31 13F CARMAX COM 143130102 24,573 0 0.00 1,155 -3.02 0.0117
2013-11-12 2013-09-30 13F CARMAX COM 143130102 24,573 0 0.00 1,191 3.84 0.0131
2013-08-15 2013-06-30 13F CARMAX COM 143130102 24,573 24,573 1,147 0.0134
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.