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 (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ALLERGAN PLC SHS G0177J108 112,821 670,399 SH   SOLE   663,299 0 7,100
AON PLC SHS CL A G0408V102 45,331 323,029 SH   SOLE   317,229 0 5,800
AXALTA COATING SYS LTD COM G0750C108 22,867 757,450 SH   SOLE   737,450 0 20,000
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 17,552 114,346 SH   SOLE   114,346 0 0
LIBERTY GLOBAL PLC SHS CL C G5480U120 126,362 4,152,537 SH   SOLE   4,097,537 0 55,000
MARVELL TECHNOLOGY GROUP LTD ORD G5876H105 1,260 60,000 SH   SOLE   60,000 0 0
LIBERTY LATIN AMERICA LTD COM CL C G9001E128 28,498 1,492,800 SH   SOLE   1,460,200 0 32,600
ACI WORLDWIDE INC COM 004498101 8,895 375,000 SH   SOLE   375,000 0 0
ALLISON TRANSMISSION HLDGS I COM 01973R101 27,717 709,600 SH   SOLE   687,900 0 21,700
ALPHABET INC CAP STK CL C 02079K107 97,920 94,903 SH   SOLE   93,703 0 1,200
ALPHABET INC CAP STK CL A 02079K305 166 160 SH   SOLE   160 0 0
AMAZON COM INC COM 023135106 16,837 11,633 SH   SOLE   11,633 0 0
ANHEUSER BUSCH INBEV SA/NV SPONSORED ADR 03524A108 1,869 17,000 SH   SOLE   17,000 0 0
APPLE INC COM 037833100 23 140 SH   SOLE   0 0 140
BERKSHIRE HATHAWAY INC DEL CL A 084670108 168,692 564 SH   SOLE   153 0 411
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 225,341 1,129,642 SH   SOLE   1,110,972 0 18,670
BOOKING HLDGS INC COM 09857L108 9,911 4,764 SH   SOLE   4,764 0 0
CARMAX INC COM 143130102 25,069 404,735 SH   SOLE   399,735 0 5,000
COLFAX CORP COM 194014106 52,313 1,639,900 SH   SOLE   1,611,900 0 28,000
COMCAST CORP NEW CL A 20030N101 21,345 624,659 SH   SOLE   624,659 0 0
COMPASS MINERALS INTL INC COM 20451N101 8,623 143,000 SH   SOLE   143,000 0 0
DXC TECHNOLOGY CO COM 23355L106 45,002 447,647 SH   SOLE   442,647 0 5,000
DANAHER CORP DEL COM 235851102 23,475 239,761 SH   SOLE   237,561 0 2,200
DIAGEO P L C SPON ADR NEW 25243Q205 17,605 130,000 SH   SOLE   130,000 0 0
DISCOVERY COMMUNICATNS NEW COM SER C 25470F302 24,230 1,241,300 SH   SOLE   1,215,100 0 26,200
DOLLAR TREE INC COM 256746108 27,788 292,816 SH   SOLE   292,816 0 0
EQUITY COMWLTH COM SH BEN INT 294628102 7,790 254,000 SH   SOLE   254,000 0 0
FLIR SYS INC COM 302445101 8,057 161,100 SH   SOLE   154,100 0 7,000
FACEBOOK INC CL A 30303M102 16,175 101,228 SH   SOLE   101,228 0 0
GCI LIBERTY INC COM CLASS A 36164V305 28,026 530,202 SH   SOLE   525,202 0 5,000
GUIDEWIRE SOFTWARE INC COM 40171V100 5,820 72,000 SH   SOLE   72,000 0 0
INTELLIGENT SYS CORP NEW COM 45816D100 11,600 2,270,000 SH   SOLE   2,270,000 0 0
ISHARES TR RUS 1000 ETF 464287622 279 1,898 SH   SOLE   0 0 1,898
JPMORGAN CHASE & CO COM 46625H100 1,375 12,500 SH   SOLE   12,500 0 0
LABORATORY CORP AMER HLDGS COM NEW 50540R409 120,938 747,684 SH   SOLE   738,684 0 9,000
LIBERTY BROADBAND CORP COM SER A 530307107 29,680 350,000 SH   SOLE   350,000 0 0
LIBERTY BROADBAND CORP COM SER C 530307305 175,944 2,053,262 SH   SOLE   2,021,262 0 32,000
LIBERTY EXPEDIA HOLDINGS SER A COM 53046P109 11,784 300,000 SH   SOLE   300,000 0 0
LIBERTY INTERACTIVE CORP QVC GP COM SER A 53071M104 44,280 1,759,250 SH   SOLE   1,722,250 0 37,000
LIBERTY MEDIA CORP DELAWARE COM A SIRIUSXM 531229409 16,235 395,000 SH   SOLE   395,000 0 0
LIBERTY MEDIA CORP DELAWARE COM C SIRIUSXM 531229607 62,781 1,536,867 SH   SOLE   1,512,367 0 24,500
LIBERTY MEDIA CORP DELAWARE COM A BRAVES GRP 531229706 705 31,000 SH   SOLE   31,000 0 0
LIBERTY MEDIA CORP DELAWARE COM SER C FRMLA 531229854 8,484 275,000 SH   SOLE   275,000 0 0
LIBERTY MEDIA CORP DELAWARE COM SER A FRMLA 531229870 2,270 77,500 SH   SOLE   77,500 0 0
LIBERTY MEDIA CORP DELAWARE COM C BRAVES GRP 531229888 5,591 245,000 SH   SOLE   245,000 0 0
LIONS GATE ENTMNT CORP CL A VTG 535919401 3,229 125,000 SH   SOLE   125,000 0 0
LIONS GATE ENTMNT CORP CL B NON VTG 535919500 3,612 150,000 SH   SOLE   150,000 0 0
MARKEL CORP COM 570535104 2,926 2,500 SH   SOLE   2,500 0 0
MARTIN MARIETTA MATLS INC COM 573284106 1,347 6,500 SH   SOLE   6,500 0 0
MASTERCARD INCORPORATED CL A 57636Q104 92,869 530,198 SH   SOLE   524,198 0 6,000
MONSANTO CO NEW COM 61166W101 21,804 186,850 SH   SOLE   186,850 0 0
MURPHY USA INC COM 626755102 3,276 45,000 SH   SOLE   45,000 0 0
ORACLE CORP COM 68389X105 61,112 1,335,774 SH   SOLE   1,315,874 0 19,900
PIONEER NAT RES CO COM 723787107 13,965 81,294 SH   SOLE   81,294 0 0
PRAXAIR INC COM 74005P104 25,273 175,140 SH   SOLE   175,140 0 0
RTW HLDGS INC NOTE 5.625%11/1 749772AB5 16,160 16,000,000 PRN   SOLE   16,000,000 0 0
REDWOOD TR INC NOTE 4.625% 4/1 758075AB1 32,989 32,825,000 PRN   SOLE   32,825,000 0 0
REDWOOD TR INC NOTE 4.750% 8/1 758075AC9 14,577 15,000,000 PRN   SOLE   15,000,000 0 0
REDWOOD TR INC COM 758075402 73,886 4,776,100 SH   SOLE   4,715,100 0 61,000
SPDR S&P 500 ETF TR TR UNIT 78462F103 47 180 SH   SOLE   0 0 180
TEXAS INSTRS INC COM 882508104 40,961 394,270 SH   SOLE   386,070 0 8,200
THERMO FISHER SCIENTIFIC INC COM 883556102 27,166 131,581 SH   SOLE   131,581 0 0
TRANSDIGM GROUP INC COM 893641100 9,374 30,540 SH   SOLE   30,540 0 0
TUPPERWARE BRANDS CORP COM 899896104 22,511 465,300 SH   SOLE   455,800 0 9,500
TWENTY FIRST CENTY FOX INC CL A 90130A101 16,511 450,000 SH   SOLE   450,000 0 0
TWENTY FIRST CENTY FOX INC CL B 90130A200 318 8,745 SH   SOLE   8,745 0 0
VANGUARD BD INDEX FD INC INTERMED TERM 921937819 194 2,371 SH   SOLE   0 0 2,371
VANGUARD BD INDEX FD INC SHORT TRM BOND 921937827 368 4,692 SH   SOLE   0 0 4,692
VANGUARD TAX MANAGED INTL FD FTSE DEV MKT ETF 921943858 733 16,555 SH   SOLE   0 0 16,555
VANGUARD INDEX FDS TOTAL STK MKT 922908769 1,095 8,068 SH   SOLE   0 0 8,068
VISA INC COM CL A 92826C839 93,645 782,856 SH   SOLE   769,856 0 13,000
VULCAN MATLS CO COM 929160109 1,256 11,000 SH   SOLE   11,000 0 0
WELLS FARGO CO NEW COM 949746101 28,332 540,578 SH   SOLE   530,378 0 10,200
WESCO AIRCRAFT HLDGS INC COM 950814103 26,650 2,600,000 SH   SOLE   2,600,000 0 0
XO GROUP INC COM 983772104 14,006 675,000 SH   SOLE   675,000 0 0