The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
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COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
AerCap Holdings COM n00985106   48,094,496 855,317 SH   SOLE   855,317 0 0
Alphabet COM 38259p706   83,023,558 798,303 SH   SOLE   798,303 0 0
Alphabet Class A COM 38259p508   398,531 3,842 SH   SOLE   3,842 0 0
Amazon Com COM 023135106   260,291 2,520 SH   SOLE   2,520 0 0
Amgen COM 031162100   899,310 3,720 SH   SOLE   3,720 0 0
Apple COM 037833100   5,619,792 34,080 SH   SOLE   34,080 0 0
Bank of America COM 060505104   4,388,861 153,457 SH   SOLE   153,457 0 0
Berkshire Hathaway 'A' COM 084670108   21,417,600 46 SH   SOLE   46 0 0
Berkshire Hathaway COM 084670702   420,016,453 1,360,289 SH   SOLE   1,360,289 0 0
Berkshire Hathaway COM 084670702   275,577,225 892,500 SH Call SOLE   892,500 0 0
Berkshire Hathaway COM 084670702   117,116,461 379,300 SH Call SOLE   379,300 0 0
Berkshire Hathaway COM 084670702   3,025,946 9,800 SH Call SOLE   9,800 0 0
Berkshire Hathaway COM 084670702   121,315,733 392,900 SH Call SOLE   392,900 0 0
Berkshire Hathaway COM 084670702   346,316,432 1,121,600 SH Call SOLE   1,121,600 0 0
Berkshire Hathaway COM 084670702   1,018,941 3,300 SH Call SOLE   3,300 0 0
Berkshire Hathaway COM 084670702   1,296,834 4,200 SH Call SOLE   4,200 0 0
Berkshire Hathaway COM 084670702   864,556 2,800 SH Call SOLE   2,800 0 0
Berkshire Hathaway COM 084670702   710,171 2,300 SH Call SOLE   2,300 0 0
Berkshire Hathaway COM 084670702   123,847,647 401,100 SH Call SOLE   401,100 0 0
Berkshire Hathaway COM 084670702   50,267,756 162,800 SH Call SOLE   162,800 0 0
Berkshire Hathaway COM 084670702   45,883,222 148,600 SH Call SOLE   148,600 0 0
Berkshire Hathaway COM 084670702   6,175,400 20,000 SH Call SOLE   20,000 0 0
Berkshire Hathaway COM 084670702   8,460,298 27,400 SH Call SOLE   27,400 0 0
Berkshire Hathaway COM 084670702   21,860,916 70,800 SH Call SOLE   70,800 0 0
Berkshire Hathaway COM 084670702   7,657,496 24,800 SH Call SOLE   24,800 0 0
Berkshire Hathaway COM 084670702   1,358,588 4,400 SH Call SOLE   4,400 0 0
Berkshire Hathaway COM 084670702   3,087,700 10,000 SH Call SOLE   10,000 0 0
Berkshire Hathaway COM 084670702   2,007,005 6,500 SH Call SOLE   6,500 0 0
Berkshire Hathaway COM 084670702   216,139 700 SH Call SOLE   700 0 0
Berkshire Hathaway COM 084670702   12,875,709 41,700 SH Call SOLE   41,700 0 0
Biglari Cl A COM 08986r408   1,949,526 2,346 SH   SOLE   2,346 0 0
Bread Financial Holdings COM 018581108   11,844,449 390,648 SH   SOLE   390,648 0 0
Brookfield Asset Management COM 113004105   1,838,766 56,197 SH   SOLE   56,197 0 0
Brookfield Corp. COM 11271J107   97,187,485 2,982,126 SH   SOLE   2,982,126 0 0
CarMax COM 143130102   41,017,264 638,103 SH   SOLE   638,103 0 0
Cardlytics COM 14161W105   36,666 10,800 SH   SOLE   10,800 0 0
Caterpillar Tractor COM 149123101   392,918 1,717 SH   SOLE   1,717 0 0
Chevron COM 166764100   275,251 1,687 SH   SOLE   1,687 0 0
Cimpress COM 045290255   18,135,755 413,869 SH   SOLE   413,869 0 0
Conocophillips COM 20825c104   337,711 3,404 SH   SOLE   3,404 0 0
Disney (Walt) COM 254687106   3,810,748 38,058 SH   SOLE   38,058 0 0
Fastenal COM 311900104   351,149 6,510 SH   SOLE   6,510 0 0
FedEx COM 31428x106   46,883,054 205,186 SH   SOLE   205,186 0 0
General Electric COM 369604103   293,205 3,067 SH   SOLE   3,067 0 0
Goldman Sachs COM 38141g104   402,345 1,230 SH   SOLE   1,230 0 0
Illinois Tool Works COM 452308109   267,795 1,100 SH   SOLE   1,100 0 0
LKQ Corp COM 501889208   69,949,325 1,232,370 SH   SOLE   1,232,370 0 0
Markel COM 570535104   87,460,006 68,467 SH   SOLE   68,467 0 0
Metro Bank PLC COM G60640102   55,807 42,500 SH   SOLE   42,500 0 0
Microsoft COM 594918104   1,709,331 5,929 SH   SOLE   5,929 0 0
Quest Diagnostics COM 74834l100   25,873,295 182,876 SH   SOLE   182,876 0 0
Sempra Energy COM 816851109   287,102 1,899 SH   SOLE   1,899 0 0
Suncor COM 867224107   58,077,130 1,870,439 SH   SOLE   1,870,439 0 0
Tesla Motors COM 88160r101   311,812 1,503 SH   SOLE   1,503 0 0
Trupanion Inc. COM 898202106   703,396 16,400 SH   SOLE   16,400 0 0
Verizon COM 92343v104   448,246 11,526 SH   SOLE   11,526 0 0
Wayfair COM 94419l101   6,211,110 180,871 SH   SOLE   180,871 0 0
Wells Fargo COM 949746101   29,202,095 781,222 SH   SOLE   781,222 0 0
IShares Exponential Technologi ETF 46434V381   442,680 8,400 SH   SOLE   8,400 0 0
SPDR S&P 500 ETF 78462f103   334,062 816 SH   SOLE   816 0 0