카맥스(주)
MX ˙ BMV ˙ US1431301027
SecurityMX:KMX / CarMax, Inc.
InstitutionHighTower Advisors, LLC
Latest Disclosed Ownership10,461 shares
Latest Disclosed Value $ 434,959
HighTower Advisors, LLC ownership in KMX / CarMax, Inc.

On May 5, 2026 - HighTower Advisors, LLC filed a 13F-HR form disclosing ownership of 10,461 shares of CarMax, Inc. (MX:KMX) valued at $434,959 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 11, 2025 disclosing 0 shares of CarMax, Inc..

HighTower Advisors, LLC has a history of taking positions in derivatives of the underlying security (KMX) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:KMX / CarMax, Inc. Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F CARMAX COM 143130102 10,461 10,461 435 0.0005
2025-08-11 2025-06-30 13F CARMAX COM 143130102 0 -100.00 0
2025-05-13 2025-03-31 13F CARMAX COM 143130102 5,839 -2,182 -27.20 455 -30.69 0.0006
2025-02-07 2024-12-31 13F CARMAX COM 143130102 8,021 2,353 41.51 656 49.54 0.0009
2024-11-14 2024-09-30 13F CARMAX COM 143130102 5,668 -2,728 -32.49 438 -29.13 0.0006
2024-08-13 2024-06-30 13F CARMAX COM 143130102 8,396 -98 -1.15 618 -16.82 0.0010
2024-05-06 2024-03-31 13F CARMAX COM 143130102 8,494 -45,882 -84.38 743 -82.20 0.0012
2024-02-12 2023-12-31 13F CARMAX COM 143130102 54,376 41,274 315.02 4,173 349.68 0.0070
2023-11-08 2023-09-30 13F CARMAX COM 143130102 13,102 2,648 25.33 928 5.94 0.0017
2023-08-14 2023-06-30 13F CARMAX COM 143130102 10,454 478 4.79 876 36.24 0.0017
2023-05-12 2023-03-31 13F CARMAX COM 143130102 9,976 48 0.48 643 6.46 0.0014
2023-02-09 2022-12-31 13F CARMAX COM 143130102 9,928 3,161 46.71 604 33.92 0.0014
2022-11-09 2022-09-30 13F CARMAX COM 143130102 6,767 740 12.28 451 -17.25 0.0012
2022-08-10 2022-06-30 13F CARMAX COM 143130102 6,027 865 16.76 545 9.66 0.0014
2022-05-12 2022-03-31 13F CARMAX COM 143130102 5,162 108 2.14 497 -24.70 0.0011
2022-02-10 2021-12-31 13F CARMAX COM 143130102 5,054 -660 -11.55 660 -10.08 0.0014
2021-11-12 2021-09-30 13F CARMAX COM 143130102 5,714 1,120 24.38 734 23.15 0.0020
2021-08-06 2021-06-30 13F CARMAX COM 143130102 4,594 749 19.48 596 17.09 0.0017
2021-05-10 2021-03-31 13F CARMAX COM 143130102 3,845 -162 -4.04 509 34.30 0.0016
2021-02-10 2020-12-31 13F CARMAX COM 143130102 4,007 1,683 72.42 379 77.93 0.0016
2020-11-13 2020-09-30 13F CARMAX COM 143130102 2,324 -358 -13.35 213 -10.50 0.0010
2020-08-10 2020-06-30 13F CARMAX COM 143130102 2,682 -3,320 -55.31 238 -26.09 0.0013
2020-05-21 2020-03-31 13F CARMAX COM 143130102 6,002 -311 -4.93 322 -41.77 0.0021
2020-02-14 2019-12-31 13F CARMAX COM 143130102 6,313 -455 -6.72 553 -7.21 0.0033
2019-11-12 2019-09-30 13F CARMAX COM 143130102 6,768 699 11.52 596 12.88 0.0032
2019-08-13 2019-06-30 13F CARMAX COM 143130102 6,069 2,351 63.23 528 101.53 0.0031
2019-05-15 2019-03-31 13F CARMAX COM 143130102 3,718 2 0.05 262 11.02 0.0017
2019-02-14 2018-12-31 13F CARMAX COM 143130102 3,716 -1,731 -31.78 236 -41.58 0.0018
2018-11-09 2018-09-30 13F CARMAX COM 143130102 5,447 1,569 40.46 404 44.29 0.0029
2018-08-14 2018-06-30 13F CARMAX COM 143130102 3,878 -910 -19.01 280 -5.08 0.0022
2018-05-15 2018-03-31 13F CARMAX COM 143130102 4,788 435 9.99 295 5.36 0.0025
2018-02-14 2017-12-31 13F CARMAX COM 143130102 4,353 -21,507 -83.17 280 -85.70 0.0023
2017-11-14 2017-09-30 13F CARMAX COM 143130102 25,860 21,595 506.33 1,958 627.88 0.0167
2017-09-22 2017-06-30 13F/A-1 CARMAX COM 143130102 4,265 -23,945 -84.88 269 -84.04 0.0024
2017-08-14 2017-06-30 13F CARMAX COM 143130102 4,265 -23,945 269
2017-05-15 2017-03-31 13F CARMAX COM 143130102 28,210 -5,594 -16.55 1,685 -22.92 0.0161
2017-02-10 2016-12-31 13F CARMAX COM 143130102 33,804 1,471 4.55 2,186 26.65 0.0237
2016-11-14 2016-09-30 13F CARMAX COM 143130102 32,333 -3,859 -10.66 1,726 -1.54 0.0200
2016-08-11 2016-06-30 13F CARMAX COM 143130102 36,192 -27,145 -42.86 1,753 -46.54 0.0222
2016-05-16 2016-03-31 13F CARMAX COM 143130102 63,337 36,573 136.65 3,279 127.71 0.0107
2016-05-18 2015-12-31 13F/A-1 CARMAX COM 143130102 26,764 -2,254 -7.77 1,440 -16.86 0.0171
2016-02-12 2015-12-31 13F CARMAX COM 143130102 26,764 1,440
2015-11-16 2015-09-30 13F CARMAX COM 143130102 29,018 7,714 36.21 1,732 22.75 0.0229
2015-08-11 2015-06-30 13F CARMAX COM 143130102 21,304 6,910 48.01 1,411 42.09 0.0226
2015-05-15 2015-03-31 13F CARMAX COM 143130102 14,394 2,779 23.93 993 28.46 0.0148
2015-02-17 2014-12-31 13F CARMAX COM 143130102 11,615 11,615 0.00 773 0.0118
2014-08-13 2014-06-30 13F CARMAX COM 143130102 0 -4,595 -100.00 0 -100.00
2014-05-15 2014-03-31 13F CARMAX COM 143130102 4,595 -594 -11.45 215 -11.89 0.0042
2014-02-14 2013-12-31 13F CARMAX COM 143130102 5,189 171 3.41 244 0.41 0.0050
2013-11-15 2013-09-30 13F CARMAX COM 143130102 5,018 -252 -4.78 243 -0.41 0.0061
2013-08-14 2013-06-30 13F CARMAX COM 143130102 5,270 5,270 244 0.0066
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-02-12 2023-12-31 13F CARMAX COM Put 0 -100.00 0 n/a n/a n/a
2023-11-08 2023-09-30 13F CARMAX COM Put 4 0.00 0 n/a n/a n/a
2023-08-14 2023-06-30 13F CARMAX COM Put 4 -99.00 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F CARMAX COM Put 400 166.67 2 -97.06 n/a n/a n/a
2023-02-09 2022-12-31 13F CARMAX COM Put 150 34 n/a n/a n/a
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.