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

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

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 (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3M Company COM 88579Y101 7,767 33,000 SH   SOLE   33,000 0 0
3M Company COM 88579Y101 40,248 171,000 SH   DFND 1 171,000 0 0
Accenture COM G1151C101 1,531 10,000 SH   SOLE   10,000 0 0
Accenture COM G1151C101 22,872 149,400 SH   DFND 1 149,400 0 0
Albemarle Corp COM 012653101 9,336 73,000 SH   DFND 1 73,000 0 0
Alleghany Corporation COM 017175100 2,580 4,328 SH   SOLE   4,328 0 0
Allergan, Inc. COM G0177J108 5,398 33,000 SH   DFND 1 33,000 0 0
Alphabet Inc COM 02079K107 101,533 97,031 SH   DFND 1 97,031 0 0
Alphabet Inc Class A COM 02079K305 13,167 12,500 SH   DFND 1 12,500 0 0
Amazon.com COM 023135106 93,558 80,000 SH   DFND 1 80,000 0 0
American Express COM 025816109 993 10,000 SH   SOLE   10,000 0 0
American Express COM 025816109 37,341 376,000 SH   DFND 1 376,000 0 0
American Tower COM 03027X100 5,065 35,500 SH   DFND 1 35,500 0 0
Analog Devices Inc COM 032654105 47,881 537,811 SH   DFND 1 537,811 0 0
Anthem Inc COM 036752103 50,402 224,000 SH   DFND 1 224,000 0 0
Aon Corporation COM G0408V102 4,958 37,000 SH   DFND 1 37,000 0 0
Apollo Global Management - A COM 037612306 22,927 685,000 SH   DFND 1 685,000 0 0
Apple Inc COM 037833100 19,140 113,100 SH   DFND 1 113,100 0 0
Archer Daniels COM 039483102 58,649 1,463,300 SH   DFND 1 1,463,300 0 0
Automatic Data Processing COM 053015103 62,193 530,700 SH   DFND 1 530,700 0 0
Baxter International Inc COM 071813109 1,422 22,000 SH   DFND 1 22,000 0 0
Becton Dickinson COM 075887109 1,927 9,000 SH   DFND 1 9,000 0 0
Berkshire Hathaway Class B COM 084670702 96,157 485,100 SH   SOLE   485,100 0 0
Berkshire Hathaway Class B COM 084670702 203,474 1,026,507 SH   DFND 1 1,026,507 0 0
Berkshire Hathaway, Inc. COM 084670108 116,957 393 SH   SOLE   393 0 0
Berkshire Hathaway, Inc. COM 084670108 206,832 695 SH   DFND 1 695 0 0
Blackrock Inc COM 09247X101 92,468 180,000 SH   DFND 1 180,000 0 0
Blackstone Group COM 09253U108 27,217 850,000 SH   DFND 1 850,000 0 0
Boeing Co COM 097023105 27,840 94,400 SH   DFND 1 94,400 0 0
Bristol Myers Squibb COM 110122108 613 10,000 SH   DFND 1 10,000 0 0
Brookfield Asset Management COM 112585104 28,083 645,000 SH   SOLE   645,000 0 0
Brookfield Asset Management COM 112585104 208,592 4,790,821 SH   DFND 1 4,790,821 0 0
Brookfield Business Partners COM G16234109 445 12,900 SH   SOLE   12,900 0 0
Brookfield Business Partners COM G16234109 3,062 88,694 SH   DFND 1 88,694 0 0
Brown Forman Class A COM 115637100 10,691 159,000 SH   SOLE   159,000 0 0
Brown Forman Class A COM 115637100 45,992 684,000 SH   DFND 1 684,000 0 0
Brown-Forman Class B COM 115637209 14,472 210,750 SH   DFND 1 210,750 0 0
Bunge Limited COM G16962105 4,816 71,800 SH   DFND 1 71,800 0 0
CDK Global Inc COM 12508E101 24 333 SH   SOLE   333 0 0
CDK Global Inc COM 12508E101 12,585 176,564 SH   DFND 1 176,564 0 0
CME Group Inc COM 12572Q105 19,717 135,000 SH   DFND 1 135,000 0 0
CVS Corporation COM 126650100 19,357 267,000 SH   DFND 1 267,000 0 0
Cable One COM 12685J105 3,657 5,200 SH   DFND 1 5,200 0 0
Carmax COM 143130102 59,281 924,386 SH   SOLE   924,386 0 0
Carmax COM 143130102 255,794 3,988,684 SH   DFND 1 3,988,684 0 0
Caterpillar Inc COM 149123101 43,807 278,000 SH   DFND 1 278,000 0 0
Charles Schwab COM 808513105 54,298 1,057,000 SH   DFND 1 1,057,000 0 0
Choice Hotels Intl Inc COM 169905106 3,492 45,000 SH   DFND 1 45,000 0 0
Cisco COM 17275R102 13,099 342,000 SH   DFND 1 342,000 0 0
Colfax Corporation COM 194014106 42,990 1,085,070 SH   SOLE   1,085,070 0 0
Colfax Corporation COM 194014106 1,981 50,000 SH   DFND 1 50,000 0 0
Comcast Corp- Class A COM 20030n101 8,451 211,000 SH   DFND 1 211,000 0 0
Costco COM 22160K105 2,420 13,000 SH   SOLE   13,000 0 0
Costco COM 22160K105 4,839 26,000 SH   DFND 1 26,000 0 0
Diageo PLC COM 25243Q205 64,034 438,500 SH   SOLE   438,500 0 0
Diageo PLC COM 25243Q205 133,077 911,300 SH   DFND 1 911,300 0 0
Discovery Communications COM 25470F302 21,763 1,028,000 SH   DFND 1 1,028,000 0 0
Disney COM 254687106 182,681 1,699,200 SH   DFND 1 1,699,200 0 0
Dollar Tree Inc COM 256746108 9,443 88,000 SH   DFND 1 88,000 0 0
Ecolab COM 278865100 30,700 228,800 SH   DFND 1 228,800 0 0
Facebook COM 30303M102 19,146 108,500 SH   DFND 1 108,500 0 0
Factset Research COM 303075105 31,613 164,000 SH   DFND 1 164,000 0 0
Flowserve COM 34354P105 2,823 67,000 SH   DFND 1 67,000 0 0
General Dynamics COM 369550108 203 1,000 SH   SOLE   1,000 0 0
General Dynamics COM 369550108 78,532 386,000 SH   DFND 1 386,000 0 0
General Electric COM 369604103 1,658 95,000 SH   DFND 1 95,000 0 0
Gilead Sciences Inc COM 375558103 2,364 33,000 SH   DFND 1 33,000 0 0
Goldman Sachs COM 38141G104 9,961 39,100 SH   DFND 1 39,100 0 0
Goodyear Tire & Rubber Co. COM 382550101 646 20,000 SH   DFND 1 20,000 0 0
Graham Holdings Co COM 384637104 2,903 5,200 SH   DFND 1 5,200 0 0
Hasbro, Inc COM 418056107 33,084 364,000 SH   DFND 1 364,000 0 0
Healthcare Services Group COM 421906108 2,900 55,000 SH   DFND 1 55,000 0 0
Heico Corp COM 422806109 354 3,750 SH   DFND 1 3,750 0 0
Heico Corp Class A COM 422806208 10,939 138,375 SH   DFND 1 138,375 0 0
Hershey Foods COM 427866108 2,736 24,100 SH   DFND 1 24,100 0 0
Hexcel Corp COM 428291108 5,319 86,000 SH   DFND 1 86,000 0 0
Home Depot COM 437076102 7,013 37,000 SH   SOLE   37,000 0 0
Home Depot COM 437076102 167,355 883,000 SH   DFND 1 883,000 0 0
Hormel Foods COM 440452100 691 19,000 SH   DFND 1 19,000 0 0
IBM COM 459200101 2,409 15,700 SH   DFND 1 15,700 0 0
Illinois Tool Works COM 452308109 12,514 75,000 SH   SOLE   75,000 0 0
Illinois Tool Works COM 452308109 25,862 155,000 SH   DFND 1 155,000 0 0
Illumina Inc COM 452327109 218 1,000 SH   DFND 1 1,000 0 0
Intl Flavors & Fragrances COM 459506101 1,221 8,000 SH   DFND 1 8,000 0 0
Investors Title Company COM 461804106 42,308 213,300 SH   DFND 1 213,300 0 0
JP Morgan COM 46625H100 19,570 183,000 SH   DFND 1 183,000 0 0
John Deere COM 244199105 171,441 1,095,400 SH   DFND 1 1,095,400 0 0
Johnson and Johnson COM 478160104 21,657 155,000 SH   SOLE   155,000 0 0
Johnson and Johnson COM 478160104 63,684 455,800 SH   DFND 1 455,800 0 0
KKR & Co LLC COM 48248M102 20,365 967,000 SH   DFND 1 967,000 0 0
Liberty Braves Group A COM 531229706 939 42,600 SH   DFND 1 42,600 0 0
Liberty Braves Group C COM 531229888 2,217 99,788 SH   DFND 1 99,788 0 0
Liberty Broadband A COM 530307107 319 3,750 SH   SOLE   3,750 0 0
Liberty Broadband A COM 530307107 17,138 201,500 SH   DFND 1 201,500 0 0
Liberty Broadband Class C COM 530307305 581 6,818 SH   SOLE   6,818 0 0
Liberty Broadband Class C COM 530307305 14,077 165,295 SH   DFND 1 165,295 0 0
Liberty Global PLC COM G5480U104 4,444 124,000 SH   DFND 1 124,000 0 0
Liberty Global PLC Lilac COM G5480U138 297 14,720 SH   DFND 1 14,720 0 0
Liberty Media Group A COM 531229870 5,153 157,500 SH   DFND 1 157,500 0 0
Liberty Media Group C COM 531229854 8,865 259,500 SH   DFND 1 259,500 0 0
Liberty Sirius Group A COM 531229409 16,895 426,000 SH   DFND 1 426,000 0 0
Liberty Sirius Group C COM 531229607 1,190 30,000 SH   SOLE   30,000 0 0
Liberty Sirius Group C COM 531229607 19,513 492,000 SH   DFND 1 492,000 0 0
Live Nation COM 538034109 17,781 417,700 SH   DFND 1 417,700 0 0
Lowes COM 548661107 8,829 95,000 SH   SOLE   95,000 0 0
Lowes COM 548661107 44,146 475,000 SH   DFND 1 475,000 0 0
MSCI COM 55354G100 17,336 137,000 SH   DFND 1 137,000 0 0
Marriott International COM 571903202 13,845 102,000 SH   SOLE   102,000 0 0
Marriott International COM 571903202 190,873 1,406,269 SH   DFND 1 1,406,269 0 0
Marsh & McLennan COM 571748102 49,607 609,500 SH   DFND 1 609,500 0 0
Mastercard, Inc COM 57636Q104 27,563 182,100 SH   DFND 1 182,100 0 0
Maxim Integrated Products COM 57772K101 10,299 197,000 SH   DFND 1 197,000 0 0
McKesson Corp COM 58155Q103 4,070 26,100 SH   DFND 1 26,100 0 0
Merck COM 58933Y105 315 5,600 SH   DFND 1 5,600 0 0
Microchip Technology COM 595017104 703 8,000 SH   DFND 1 8,000 0 0
Microsoft Corp COM 594918104 26,688 312,000 SH   DFND 1 312,000 0 0
Monsanto Co COM 61166W101 46,327 396,700 SH   DFND 1 396,700 0 0
Moody's Corp COM 615369105 42,807 290,000 SH   DFND 1 290,000 0 0
Nike COM 654106103 2,252 36,000 SH   SOLE   36,000 0 0
Nike COM 654106103 20,641 330,000 SH   DFND 1 330,000 0 0
Norfolk Southern COM 655844108 33,255 229,500 SH   DFND 1 229,500 0 0
Novartis AG-Sponsored ADR COM 66987V109 311 3,700 SH   DFND 1 3,700 0 0
Novo-Nordisk A/S COM 670100205 57,695 1,075,000 SH   DFND 1 1,075,000 0 0
Oaktree Capital Group LLC COM 674001201 37,322 886,500 SH   DFND 1 886,500 0 0
Paccar COM 693718108 8,409 118,300 SH   DFND 1 118,300 0 0
Parker-Hannifin Corp COM 701094104 23,670 118,600 SH   DFND 1 118,600 0 0
Patterson Companies Inc. COM 703395103 6,070 168,000 SH   DFND 1 168,000 0 0
Paychex COM 704326107 10,212 150,000 SH   DFND 1 150,000 0 0
Penske Automotive Group COM 70959W103 3,445 72,000 SH   DFND 1 72,000 0 0
Pepsico COM 713448108 17,460 145,600 SH   DFND 1 145,600 0 0
Philip Morris International COM 718172109 12,097 114,500 SH   DFND 1 114,500 0 0
Praxair Inc. COM 74005P104 13,055 84,400 SH   DFND 1 84,400 0 0
Priceline Group Inc COM 741503403 348 200 SH   DFND 1 200 0 0
RLI Corporation COM 749607107 72,627 1,197,272 SH   DFND 1 1,197,272 0 0
Ritchie Bros COM 767744105 3,412 114,000 SH   DFND 1 114,000 0 0
Rockwell Automation Inc COM 773903109 25,094 127,800 SH   DFND 1 127,800 0 0
Rockwell Collins Inc COM 774341101 5,018 37,000 SH   DFND 1 37,000 0 0
Rollins, Inc. COM 775711104 20,645 443,700 SH   DFND 1 443,700 0 0
S&P Global COM 78409V104 24,902 147,000 SH   DFND 1 147,000 0 0
SEI Investments Co COM 784117103 22,004 306,200 SH   DFND 1 306,200 0 0
Sensata Technologies Holding COM N7902X106 8,586 168,000 SH   DFND 1 168,000 0 0
Starbucks Corp COM 855244109 2,986 52,000 SH   DFND 1 52,000 0 0
Stericycle Inc COM 858912108 15,774 232,000 SH   DFND 1 232,000 0 0
Synalloy Corporation COM 871565107 5,558 414,804 SH   SOLE   414,804 0 0
T.Rowe Price COM 74144T108 1,154 11,000 SH   SOLE   11,000 0 0
T.Rowe Price COM 74144T108 31,794 303,000 SH   DFND 1 303,000 0 0
Texas Instruments Inc COM 882508104 54,935 526,000 SH   DFND 1 526,000 0 0
The Carlyle Group COM 14309L102 18,251 797,000 SH   DFND 1 797,000 0 0
The Travelers Companies Inc COM 89417E109 42,727 315,000 SH   DFND 1 315,000 0 0
Tyson Foods COM 902494103 14,430 178,000 SH   DFND 1 178,000 0 0
Under Armour Inc-Class C COM 904311206 1,465 110,000 SH   DFND 1 110,000 0 0
Unilever PLC ADR COM 904767704 84,537 1,527,600 SH   DFND 1 1,527,600 0 0
Union Pacific COM 907818108 11,345 84,600 SH   DFND 1 84,600 0 0
United Health Group Inc COM 91324P102 1,146 5,200 SH   SOLE   5,200 0 0
United Health Group Inc COM 91324P102 145,019 657,800 SH   DFND 1 657,800 0 0
United Technologies COM 913017109 21,049 165,000 SH   DFND 1 165,000 0 0
VF Corp COM 918204108 2,279 30,800 SH   DFND 1 30,800 0 0
Verisk Analytics Inc COM 92345Y106 7,008 73,000 SH   DFND 1 73,000 0 0
Visa COM 92826C839 456 4,000 SH   SOLE   4,000 0 0
Visa COM 92826C839 103,792 910,300 SH   DFND 1 910,300 0 0
W.P. Carey COM 92936U109 3,100 45,000 SH   SOLE   45,000 0 0
W.P. Carey COM 92936U109 62,368 905,200 SH   DFND 1 905,200 0 0
WR Berkley Corp COM 084423102 1,290 18,000 SH   DFND 1 18,000 0 0
Walgreens Boots Alliance Inc COM 931427108 45,387 625,000 SH   SOLE   625,000 0 0
Walgreens Boots Alliance Inc COM 931427108 109,656 1,510,000 SH   DFND 1 1,510,000 0 0
Watsco Inc COM 942622200 40,044 235,500 SH   DFND 1 235,500 0 0