CarMax, Inc.
US ˙ NYSE ˙ US1431301027

SecurityKMX / CarMax, Inc.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership379,714 shares
Latest Disclosed Value $ 15,788,508
Trexquant Investment LP reports 6.13% decrease in ownership of KMX / CarMax, Inc.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 379,714 shares of CarMax, Inc. (US:KMX) valued at $15,788,508 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 404,529 shares of CarMax, Inc.. This represents a change in shares of -6.13% during the quarter. The current value of the position is $17,903,515 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.

Upgrade to unlock premium data and export to Excel .

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 379,714 -24,815 -6.13 15,789 1.00 0.1135
2026-02-17 2025-12-31 13F CARMAX COM 143130102 404,529 371,557 1,126.89 15,631 956.86 0.1393
2025-11-14 2025-09-30 13F CARMAX COM 143130102 32,972 -354,560 -91.49 1,479 -94.32 0.0152
2025-08-12 2025-06-30 13F CARMAX COM 143130102 387,532 245,572 172.99 26,046 135.48 0.2938
2025-05-14 2025-03-31 13F CARMAX COM 143130102 141,960 68,586 93.47 11,062 84.38 0.1287
2025-02-12 2024-12-31 13F CARMAX COM 143130102 73,374 -307,252 -80.72 5,999 -79.63 0.0699
2024-11-12 2024-09-30 13F CARMAX COM 143130102 380,626 208,054 120.56 29,453 132.71 0.3729
2024-08-13 2024-06-30 13F CARMAX COM 143130102 172,572 153,459 802.90 12,656 660.58 0.1931
2024-05-14 2024-03-31 13F CARMAX COM 143130102 19,113 19,113 1,665 0.0332
2022-11-14 2022-09-30 13F CARMAX COM 143130102 0 -28,441 -100.00 0 -100.00
2022-08-11 2022-06-30 13F CARMAX COM 143130102 28,441 28,441 2,573 0.1153
2021-02-11 2020-12-31 13F CARMAX COM 143130102 0 -42,599 -100.00 0 -100.00
2020-11-06 2020-09-30 13F CARMAX COM 143130102 42,599 -72,836 -63.10 3,915 -62.13 0.2519
2020-08-07 2020-06-30 13F CARMAX COM 143130102 115,435 115,435 10,337 0.7178
2019-08-09 2019-06-30 13F CARMAX COM 143130102 0 -7,654 -100.00 0 -100.00
2019-05-13 2019-03-31 13F CARMAX COM 143130102 7,654 -190,573 -96.14 534 -95.71 0.0379
2019-02-13 2018-12-31 13F CARMAX COM 143130102 198,227 198,227 12,435 0.7773
2018-11-09 2018-09-30 13F CARMAX COM 143130102 0 -141,340 -100.00 0 -100.00
2018-08-07 2018-06-30 13F CARMAX COM 143130102 141,340 85,504 153.13 10,299 197.83 0.7136
2018-05-03 2018-03-31 13F CARMAX COM 143130102 55,836 55,836 3,458 0.2410
2017-11-09 2017-09-30 13F CARMAX COM 143130102 0 -36,500 -100.00 0 -100.00
2017-08-01 2017-06-30 13F CARMAX COM 143130102 36,500 36,500 2,302 0.6301
2017-02-10 2016-12-31 13F CARMAX COM 143130102 0 -28,417 -100.00 0 -100.00
2016-11-10 2016-09-30 13F CARMAX COM 143130102 28,417 -25,163 -46.96 1,516 -42.29 0.3384
2016-08-10 2016-06-30 13F CARMAX COM 143130102 53,580 53,580 0.00 2,627 0.3452
2016-05-11 2016-03-31 13F CARMAX COM 143130102 0 0 0 0.0000
2015-11-02 2015-09-30 13F CARMAX COM 143130102 0 -44,900 -100.00 0 -100.00
2015-08-12 2015-06-30 13F CARMAX COM 143130102 44,900 44,900 2,972 0.3337
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.