CarMax, Inc.
US ˙ NYSE ˙ US1431301027

SecurityKMX / CarMax, Inc.
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Qube Research & Technologies Ltd ownership in KMX / CarMax, Inc.

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 0 shares of CarMax, Inc. (US:KMX) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 119,760 shares of CarMax, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Qube Research & Technologies Ltd 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 70,600 of underlying shares valued at $2,935,548 USD and put options representing 66,000 of underlying shares valued at $2,744,280 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.

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 0 -119,760 -100.00 0 -100.00
2026-02-17 2025-12-31 13F CARMAX COM 143130102 119,760 -1,516,604 -92.68 4,628 -93.70 0.0047
2025-11-14 2025-09-30 13F CARMAX COM 143130102 1,636,364 132,316 8.80 73,424 -27.37 0.0759
2025-08-14 2025-06-30 13F CARMAX COM 143130102 1,504,048 1,504,048 101,087 0.1027
2025-02-14 2024-12-31 13F CARMAX COM 143130102 0 -140,898 -100.00 0 -100.00
2024-11-14 2024-09-30 13F CARMAX COM 143130102 140,898 140,898 10,903 0.0161
2024-05-14 2024-03-31 13F CARMAX COM 143130102 0 -51 -100.00 0 -100.00
2024-02-13 2023-12-31 13F CARMAX COM 143130102 51 -61,006 -99.92 4 -99.93 0.0000
2023-11-13 2023-09-30 13F CARMAX COM 143130102 61,057 61,057 4,319 0.0113
2023-08-14 2023-06-30 13F CARMAX COM 143130102 0 -73,836 -100.00 0 -100.00
2023-05-15 2023-03-31 13F CARMAX COM 143130102 73,836 38,293 107.74 4,746 119.32 0.0204
2023-02-14 2022-12-31 13F CARMAX COM 143130102 35,543 35,543 2,164 0.0116
2022-11-14 2022-09-30 13F CARMAX COM 143130102 0 -55,117 -100.00 0 -100.00
2022-08-15 2022-06-30 13F CARMAX COM 143130102 55,117 -42,437 -43.50 4,987 -47.01 0.0368
2022-05-09 2022-03-31 13F CARMAX COM 143130102 97,554 95,046 3,789.71 9,412 2,778.29 0.0797
2022-02-10 2021-12-31 13F/A-1 CARMAX COM 143130102 2,508 2,508 327 0.0025
2022-02-01 2021-12-31 13F CARMAX COM 143130102 2,508 2,508 327 0.0025
2021-08-13 2021-06-30 13F CARMAX COM 143130102 0 -22,357 -100.00 0 -100.00
2021-05-14 2021-03-31 13F CARMAX COM 143130102 22,357 22,357 2,966 0.0470
2021-02-16 2020-12-31 13F CARMAX COM 143130102 0 -155,431 -100.00 0 -100.00
2020-11-12 2020-09-30 13F CARMAX COM 143130102 155,431 25,938 20.03 14,286 23.20 0.2039
2020-08-14 2020-06-30 13F CARMAX COM 143130102 129,493 106,430 461.48 11,596 834.41 0.1701
2020-05-15 2020-03-31 13F CARMAX COM 143130102 23,063 12,921 127.40 1,241 39.60 0.0510
2020-02-13 2019-12-31 13F CARMAX COM 143130102 10,142 10,142 889 0.0279
2019-08-02 2019-06-30 13F CARMAX COM 143130102 0 -17,951 -100.00 0 -100.00
2019-05-15 2019-03-31 13F CARMAX COM 143130102 17,951 14,470 415.69 1,253 474.77 0.1655
2019-02-14 2018-12-31 13F CARMAX COM 143130102 3,481 3,481 218 0.0941
2018-11-14 2018-09-30 13F CARMAX COM 143130102 0 -2,608 -100.00 0 -100.00
2018-08-15 2018-06-30 13F/A-1 CARMAX COM 143130102 2,608 2,608 190 0.1199
2018-08-14 2018-06-30 13F CARMAX COM 143130102 2,608 190 0.1199
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 70,600 -52.10 2,936 -48.46 n/a n/a n/a
2026-02-17 2025-12-31 13F CARMAX COM Call 147,400 16.52 5,696 0.33 n/a n/a n/a
2025-11-14 2025-09-30 13F CARMAX COM Call 126,500 108.06 5,676 38.91 n/a n/a n/a
2025-08-14 2025-06-30 13F CARMAX COM Call 60,800 744.44 4,086 628.34 n/a n/a n/a
2025-05-15 2025-03-31 13F CARMAX COM Call 7,200 4.35 561 -0.53 n/a n/a n/a
2025-02-14 2024-12-31 13F CARMAX COM Call 6,900 1,625.00 564 1,780.00 n/a n/a n/a
2024-11-14 2024-09-30 13F CARMAX COM Call 400 31 n/a n/a n/a
2024-08-14 2024-06-30 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-14 2024-03-31 13F CARMAX COM Call 8,100 706 n/a n/a n/a
2024-02-13 2023-12-31 13F CARMAX COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-13 2023-09-30 13F CARMAX COM Call 71,900 5,085 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 66,000 -39.62 2,744 -35.02 n/a n/a n/a
2026-02-17 2025-12-31 13F CARMAX COM Put 109,300 -33.31 4,223 -42.58 n/a n/a n/a
2025-11-14 2025-09-30 13F CARMAX COM Put 163,900 88.61 7,354 25.92 n/a n/a n/a
2025-08-14 2025-06-30 13F CARMAX COM Put 86,900 1,920.93 5,841 1,643.28 n/a n/a n/a
2025-05-15 2025-03-31 13F CARMAX COM Put 4,300 -40.28 335 -43.03 n/a n/a n/a
2025-02-14 2024-12-31 13F CARMAX COM Put 7,200 589 n/a n/a n/a
2024-08-14 2024-06-30 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-14 2024-03-31 13F CARMAX COM Put 7,200 627 n/a n/a n/a
2024-02-13 2023-12-31 13F CARMAX COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-13 2023-09-30 13F CARMAX COM Put 90,000 6,366 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.