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   65,363,280 879,484 SH   SOLE   879,484 0 0
Alphabet COM 38259p706   107,147,170 760,286 SH   SOLE   760,286 0 0
Alphabet Class A COM 38259p508   470,755 3,370 SH   SOLE   3,370 0 0
Amazon Com COM 023135106   382,889 2,520 SH   SOLE   2,520 0 0
Amgen COM 031162100   1,071,434 3,720 SH   SOLE   3,720 0 0
Apple COM 037833100   6,510,209 33,814 SH   SOLE   33,814 0 0
Bank of America COM 060505104   4,616,352 137,106 SH   SOLE   137,106 0 0
Berkshire Hathaway 'A' COM 084670108   21,162,376 39 SH   SOLE   39 0 0
Berkshire Hathaway COM 084670702   497,346,465 1,394,455 SH   SOLE   1,394,455 0 0
Berkshire Hathaway COM 084670702   221,592,858 621,300 SH Call SOLE   621,300 0 0
Berkshire Hathaway COM 084670702   141,023,364 395,400 SH Call SOLE   395,400 0 0
Berkshire Hathaway COM 084670702   3,495,268 9,800 SH Call SOLE   9,800 0 0
Berkshire Hathaway COM 084670702   97,296,848 272,800 SH Call SOLE   272,800 0 0
Berkshire Hathaway COM 084670702   436,694,504 1,224,400 SH Call SOLE   1,224,400 0 0
Berkshire Hathaway COM 084670702   140,738,036 394,600 SH Call SOLE   394,600 0 0
Berkshire Hathaway COM 084670702   63,414,148 177,800 SH Call SOLE   177,800 0 0
Berkshire Hathaway COM 084670702   87,881,024 246,400 SH Call SOLE   246,400 0 0
Berkshire Hathaway COM 084670702   24,110,216 67,600 SH Call SOLE   67,600 0 0
Berkshire Hathaway COM 084670702   78,893,192 221,200 SH Call SOLE   221,200 0 0
Berkshire Hathaway COM 084670702   50,610,054 141,900 SH Call SOLE   141,900 0 0
Berkshire Hathaway COM 084670702   44,261,506 124,100 SH Call SOLE   124,100 0 0
Berkshire Hathaway COM 084670702   4,101,590 11,500 SH Call SOLE   11,500 0 0
Berkshire Hathaway COM 084670702   7,133,200 20,000 SH Call SOLE   20,000 0 0
Berkshire Hathaway COM 084670702   7,133,200 20,000 SH Call SOLE   20,000 0 0
Berkshire Hathaway COM 084670702   25,251,528 70,800 SH Call SOLE   70,800 0 0
Berkshire Hathaway COM 084670702   927,316 2,600 SH Call SOLE   2,600 0 0
Berkshire Hathaway COM 084670702   1,069,980 3,000 SH Call SOLE   3,000 0 0
Berkshire Hathaway COM 084670702   2,639,284 7,400 SH Call SOLE   7,400 0 0
Berkshire Hathaway COM 084670702   2,853,280 8,000 SH Call SOLE   8,000 0 0
Berkshire Hathaway COM 084670702   7,561,192 21,200 SH Call SOLE   21,200 0 0
Berkshire Hathaway COM 084670702   2,246,958 6,300 SH Call SOLE   6,300 0 0
Berkshire Hathaway COM 084670702   249,662 700 SH Call SOLE   700 0 0
Berkshire Hathaway COM 084670702   6,098,886 17,100 SH Call SOLE   17,100 0 0
Berkshire Hathaway COM 084670702   14,872,722 41,700 SH Call SOLE   41,700 0 0
Biglari Cl A COM 08986r408   1,864,942 2,349 SH   SOLE   2,349 0 0
Boeing Co COM 097023105   268,480 1,030 SH   SOLE   1,030 0 0
Brookfield Asset Management COM 113004105   2,167,975 53,970 SH   SOLE   53,970 0 0
Brookfield Corp. COM 11271J107   121,406,015 3,026,072 SH   SOLE   3,026,072 0 0
CarMax COM 143130102   46,765,540 609,402 SH   SOLE   609,402 0 0
Cardlytics COM 14161W105   213,672 23,200 SH   SOLE   23,200 0 0
Caterpillar Tractor COM 149123101   507,665 1,717 SH   SOLE   1,717 0 0
Chevron COM 166764100   223,740 1,500 SH   SOLE   1,500 0 0
Cimpress COM 045290255   26,941,149 336,554 SH   SOLE   336,554 0 0
Conocophillips COM 20825c104   395,102 3,404 SH   SOLE   3,404 0 0
Disney (Walt) COM 254687106   303,374 3,360 SH   SOLE   3,360 0 0
Fastenal COM 311900104   256,489 3,960 SH   SOLE   3,960 0 0
FedEx COM 31428x106   47,743,345 188,731 SH   SOLE   188,731 0 0
First Citizens COM 31946M103   38,680,013 27,259 SH   SOLE   27,259 0 0
General Electric COM 369604103   424,625 3,327 SH   SOLE   3,327 0 0
Goldman Sachs COM 38141g104   474,497 1,230 SH   SOLE   1,230 0 0
Illinois Tool Works COM 452308109   288,134 1,100 SH   SOLE   1,100 0 0
LKQ Corp COM 501889208   58,933,327 1,233,173 SH   SOLE   1,233,173 0 0
Markel COM 570535104   108,002,805 76,064 SH   SOLE   76,064 0 0
Matson Inc. COM 57686G105   407,748 3,720 SH   SOLE   3,720 0 0
Metro Bank Holdings COM G60643106   15,329 32,500 SH   SOLE   32,500 0 0
Microsoft COM 594918104   2,197,578 5,844 SH   SOLE   5,844 0 0
Quest Diagnostics COM 74834l100   20,565,029 149,152 SH   SOLE   149,152 0 0
Raytheon Technologies COM 75513E101   293,564 3,489 SH   SOLE   3,489 0 0
Schwab US Large Cap Growth COM 808524300   203,252 2,450 SH   SOLE   2,450 0 0
Sempra Energy COM 816851109   283,874 3,799 SH   SOLE   3,799 0 0
Suncor COM 867224107   56,015,737 1,748,306 SH   SOLE   1,748,306 0 0
Tesla Motors COM 88160r101   615,733 2,478 SH   SOLE   2,478 0 0
Trupanion Inc. COM 898202106   732,240 24,000 SH   SOLE   24,000 0 0
Tyson Foods COM 902494103   217,687 4,050 SH   SOLE   4,050 0 0
Uber COM 90353T100   289,379 4,700 SH   SOLE   4,700 0 0
Verizon COM 92343v104   341,185 9,050 SH   SOLE   9,050 0 0
Wayfair COM 94419l101   9,150,337 148,304 SH   SOLE   148,304 0 0
Wells Fargo COM 949746101   337,797 6,863 SH   SOLE   6,863 0 0
IShares Exponential Technologi ETF 46434V381   745,381 12,450 SH   SOLE   12,450 0 0
SPDR S&P 500 ETF 78462f103   458,674 965 SH   SOLE   965 0 0