卡麥克斯公司
MX ˙ BMV ˙ US1431301027
SecurityMX:KMX / CarMax, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership1,314,833 shares
Latest Disclosed Value $ 54,670,756
Millennium Management Llc ownership in KMX / CarMax, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 1,314,833 shares of CarMax, Inc. (MX:KMX) valued at $54,670,756 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 667,284 shares of CarMax, Inc.. This represents a change in shares of 97.04% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (KMX) in the form of stock options. The firm currently holds call options representing 82,600 of underlying shares valued at $3,434,508 USD and put options representing 5,000 of underlying shares valued at $207,900 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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)
2026-05-15 2026-03-31 13F CARMAX COM 143130102 1,314,833 647,549 97.04 54,671 112.04 0.0228
2026-02-17 2025-12-31 13F CARMAX COM 143130102 667,284 -97,515 -12.75 25,784 -24.87 0.0108
2025-11-14 2025-09-30 13F CARMAX COM 143130102 764,799 -436,507 -36.34 34,317 -57.50 0.0146
2025-08-14 2025-06-30 13F CARMAX COM 143130102 1,201,306 119,480 11.04 80,740 -4.22 0.0390
2025-05-15 2025-03-31 13F CARMAX COM 143130102 1,081,826 862,461 393.16 84,296 370.00 0.0449
2025-02-14 2024-12-31 13F CARMAX COM 143130102 219,365 -249,112 -53.17 17,935 -50.52 0.0088
2024-11-14 2024-09-30 13F CARMAX COM 143130102 468,477 357,532 322.26 36,251 345.55 0.0172
2024-08-14 2024-06-30 13F CARMAX COM 143130102 110,945 41,324 59.36 8,137 34.17 0.0038
2024-05-15 2024-03-31 13F CARMAX COM 143130102 69,621 32,526 87.68 6,065 113.07 0.0026
2024-02-14 2023-12-31 13F CARMAX COM 143130102 37,095 -553,409 -93.72 2,847 -93.19 0.0012
2023-11-14 2023-09-30 13F CARMAX COM 143130102 590,504 9,325 1.60 41,766 -14.14 0.0211
2023-08-14 2023-06-30 13F CARMAX COM 143130102 581,179 550,921 1,820.74 48,645 2,400.98 0.0240
2023-05-15 2023-03-31 13F CARMAX COM 143130102 30,258 7,493 32.91 1,945 40.33 0.0011
2023-02-14 2022-12-31 13F CARMAX COM 143130102 22,765 16,370 255.98 1,386 228.44 0.0008
2022-11-14 2022-09-30 13F CARMAX COM 143130102 6,395 -13,626 -68.06 422 -76.71 0.0002
2022-08-15 2022-06-30 13F CARMAX COM 143130102 20,021 -9,887 -33.06 1,812 -37.21 0.0011
2022-05-16 2022-03-31 13F CARMAX COM 143130102 29,908 -147,178 -83.11 2,886 -87.49 0.0015
2022-02-14 2021-12-31 13F CARMAX COM 143130102 177,086 151,560 593.75 23,062 606.12 0.0117
2021-11-15 2021-09-30 13F CARMAX COM 143130102 25,526 -29,495 -53.61 3,266 -54.04 0.0020
2021-08-16 2021-06-30 13F CARMAX COM 143130102 55,021 -243,966 -81.60 7,106 -82.08 0.0044
2021-05-17 2021-03-31 13F CARMAX COM 143130102 298,987 265,763 799.91 39,664 1,163.99 0.0284
2021-02-16 2020-12-31 13F CARMAX COM 143130102 33,224 -59,701 -64.25 3,138 -63.26 0.0023
2020-11-16 2020-09-30 13F CARMAX COM 143130102 92,925 40,429 77.01 8,541 81.68 0.0105
2020-08-14 2020-06-30 13F CARMAX COM 143130102 52,496 -114,805 -68.62 4,701 -47.80 0.0064
2020-05-14 2020-03-31 13F CARMAX COM 143130102 167,301 158,336 1,766.16 9,006 1,045.80 0.0202
2020-02-14 2019-12-31 13F CARMAX COM 143130102 8,965 -70,484 -88.72 786 -88.76 0.0010
2019-11-14 2019-09-30 13F CARMAX COM 143130102 79,449 -596,903 -88.25 6,991 -88.10 0.0111
2019-08-15 2019-06-30 13F/A-1 CARMAX COM 143130102 676,352 467,264 223.48 58,728 302.41 0.0883
2019-08-14 2019-06-30 13F V F COM 143130102 632,630 298,526 15,920
2019-05-14 2019-03-31 13F CARMAX COM 143130102 209,088 -86,212 -29.19 14,594 -21.22 0.0218
2019-02-15 2018-12-31 13F/A-1 CARMAX COM 143130102 295,300 -496,873 -62.72 18,524 -68.68 0.0289
2019-02-14 2018-12-31 13F CARMAX COM 143130102 295,300 18,524
2018-11-14 2018-09-30 13F CARMAX COM 143130102 792,173 303,581 62.13 59,152 66.14 0.0725
2018-08-14 2018-06-30 13F CARMAX COM 143130102 488,592 477,435 4,279.24 35,604 5,052.53 0.0464
2018-05-15 2018-03-31 13F CARMAX COM 143130102 11,157 -142,467 -92.74 691 -92.99 0.0009
2018-02-14 2017-12-31 13F CARMAX COM 143130102 153,624 -73,964 -32.50 9,852 -42.90 0.0136
2017-11-14 2017-09-30 13F CARMAX COM 143130102 227,588 -424,312 -65.09 17,253 -58.03 0.0263
2017-08-14 2017-06-30 13F CARMAX COM 143130102 651,900 630,683 2,972.54 41,109 3,173.01 0.0733
2017-05-15 2017-03-31 13F CARMAX COM 143130102 21,217 21,217 1,256 0.0023
2017-02-14 2016-12-31 13F CARMAX COM 143130102 0 -407,905 -100.00 0 -100.00
2016-11-14 2016-09-30 13F CARMAX COM 143130102 407,905 407,905 0.00 21,762 0.0365
2016-08-15 2016-06-30 13F CARMAX COM 143130102 0 -7,130 -100.00 0 -100.00
2016-05-16 2016-03-31 13F CARMAX COM 143130102 7,130 7,130 0.00 364 0.0009
2016-02-16 2015-12-31 13F CARMAX COM 143130102 0 -9,500 -100.00 0 -100.00
2015-11-16 2015-09-30 13F CARMAX COM 143130102 9,500 -357,682 -97.41 564 -97.68 0.0011
2015-08-14 2015-06-30 13F CARMAX COM 143130102 367,182 348,120 1,826.25 24,311 1,748.75 0.0460
2015-05-15 2015-03-31 13F CARMAX COM 143130102 19,062 19,062 0.00 1,315 0.0024
2015-02-17 2014-12-31 13F CARMAX COM 143130102 0 -13,559 -100.00 0 -100.00
2014-11-14 2014-09-30 13F CARMAX COM 143130102 13,559 -99,214 -87.98 630 -89.26 0.0016
2014-08-14 2014-06-30 13F CARMAX COM 143130102 112,773 99,449 746.39 5,865 839.90 0.0162
2014-05-15 2014-03-31 13F CARMAX COM 143130102 13,324 -77,134 -85.27 624 -85.33 0.0018
2014-02-14 2013-12-31 13F CARMAX COM 143130102 90,458 -355,302 -79.71 4,253 -80.32 0.0134
2013-11-14 2013-09-30 13F CARMAX COM 143130102 445,760 445,760 21,606 0.0696
Disclosed Call 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
(%)
2026-05-15 2026-03-31 13F CARMAX COM Call 82,600 -8.22 3,435 -1.24 n/a n/a n/a
2026-02-17 2025-12-31 13F CARMAX COM Call 90,000 -46.08 3,478 -53.57 n/a n/a n/a
2025-11-14 2025-09-30 13F CARMAX COM Call 166,900 320.40 7,489 180.66 n/a n/a n/a
2025-08-14 2025-06-30 13F CARMAX COM Call 39,700 2,668 n/a n/a n/a
2025-05-15 2025-03-31 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F CARMAX COM Call 11,500 -49.56 940 -46.71 n/a n/a n/a
2024-11-14 2024-09-30 13F CARMAX COM Call 22,800 -20.56 1,764 -16.16 n/a n/a n/a
2024-08-14 2024-06-30 13F CARMAX COM Call 28,700 720.00 2,105 592.11 n/a n/a n/a
2024-05-15 2024-03-31 13F CARMAX COM Call 3,500 -51.39 305 -44.93 n/a n/a n/a
2024-02-14 2023-12-31 13F CARMAX COM Call 7,200 0.00 553 8.45 n/a n/a n/a
2023-11-14 2023-09-30 13F CARMAX COM Call 7,200 509 n/a n/a n/a
2023-08-14 2023-06-30 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F CARMAX COM Call 3,800 244 n/a n/a n/a
2023-02-14 2022-12-31 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F CARMAX COM Call 18,500 1,221 n/a n/a n/a
2022-02-14 2021-12-31 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F CARMAX COM Call 10,000 1,280 n/a n/a n/a
2015-08-14 2015-06-30 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-15 2015-03-31 13F CARMAX COM Call 29,600 236.36 2,043 248.63 n/a n/a n/a
2015-02-17 2014-12-31 13F CARMAX COM Call 8,800 586 n/a n/a n/a
2014-08-14 2014-06-30 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F CARMAX COM Call 4,500 -97.14 211 -97.23 n/a n/a n/a
2014-02-14 2013-12-31 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2013-11-14 2013-09-30 13F CARMAX COM Call 157,400 -0.69 7,629 4.28 n/a n/a n/a
2013-08-14 2013-06-30 13F CARMAX COM Call 158,500 7,316 n/a n/a n/a
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
(%)
2026-05-15 2026-03-31 13F CARMAX COM Put 5,000 -73.96 208 -72.06 n/a n/a n/a
2026-02-17 2025-12-31 13F CARMAX COM Put 19,200 -41.10 742 -49.32 n/a n/a n/a
2025-11-14 2025-09-30 13F CARMAX COM Put 32,600 14.79 1,463 -23.38 n/a n/a n/a
2025-08-14 2025-06-30 13F CARMAX COM Put 28,400 -20.67 1,909 -31.59 n/a n/a n/a
2025-05-15 2025-03-31 13F CARMAX COM Put 35,800 -7.97 2,790 -12.30 n/a n/a n/a
2025-02-14 2024-12-31 13F CARMAX COM Put 38,900 14.75 3,180 21.24 n/a n/a n/a
2024-11-14 2024-09-30 13F CARMAX COM Put 33,900 133.79 2,623 146.75 n/a n/a n/a
2024-08-14 2024-06-30 13F CARMAX COM Put 14,500 215.22 1,063 165.75 n/a n/a n/a
2024-05-15 2024-03-31 13F CARMAX COM Put 4,600 -91.61 401 -90.49 n/a n/a n/a
2024-02-14 2023-12-31 13F CARMAX COM Put 54,800 -37.73 4,205 -32.44 n/a n/a n/a
2023-11-14 2023-09-30 13F CARMAX COM Put 88,000 6,224 n/a n/a n/a
2023-08-14 2023-06-30 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F CARMAX COM Put 38,400 2,468 n/a n/a n/a
2022-02-14 2021-12-31 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F CARMAX COM Put 10,000 1,280 n/a n/a n/a
2021-08-16 2021-06-30 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-17 2021-03-31 13F CARMAX COM Put 30,000 -11.24 3,980 24.65 n/a n/a n/a
2021-02-16 2020-12-31 13F CARMAX COM Put 33,800 0.00 3,193 2.77 n/a n/a n/a
2020-11-16 2020-09-30 13F CARMAX COM Put 33,800 -1.74 3,107 0.84 n/a n/a n/a
2020-08-14 2020-06-30 13F CARMAX COM Put 34,400 1.78 3,081 69.38 n/a n/a n/a
2020-05-14 2020-03-31 13F CARMAX COM Put 33,800 -62.19 1,819 -76.79 n/a n/a n/a
2020-02-14 2019-12-31 13F CARMAX COM Put 89,400 0.34 7,838 -0.03 n/a n/a n/a
2019-11-14 2019-09-30 13F CARMAX COM Put 89,100 345.50 7,840 351.35 n/a n/a n/a
2019-08-15 2019-06-30 13F/A CARMAX COM Put 20,000 1,737 n/a n/a n/a
2016-11-14 2016-09-30 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-08-15 2016-06-30 13F CARMAX COM Put 175,000 118.75 8,580 109.88 n/a n/a n/a
2016-05-16 2016-03-31 13F CARMAX COM Put 80,000 -36.00 4,088 -39.40 n/a n/a n/a
2016-02-16 2015-12-31 13F CARMAX COM Put 125,000 6,746 n/a n/a n/a
2015-08-14 2015-06-30 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-15 2015-03-31 13F CARMAX COM Put 5,000 -95.39 345 -95.22 n/a n/a n/a
2015-02-17 2014-12-31 13F CARMAX COM Put 108,400 -52.79 7,217 -32.33 n/a n/a n/a
2014-11-14 2014-09-30 13F CARMAX COM Put 229,600 1,154.64 10,665 1,020.27 n/a n/a n/a
2014-08-14 2014-06-30 13F CARMAX COM Put 18,300 952 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.