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
ALLERGAN PLC SHS G0177J108 108,375 650,041 SH   SOLE   642,941 0 7,100
AON PLC SHS CL A G0408V102 44,284 322,841 SH   SOLE   317,041 0 5,800
AXALTA COATING SYS LTD COM G0750C108 22,958 757,450 SH   SOLE   737,450 0 20,000
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 18,686 114,224 SH   SOLE   114,224 0 0
LIBERTY GLOBAL PLC SHS CL C G5480U120 110,410 4,149,207 SH   SOLE   4,094,207 0 55,000
MARVELL TECHNOLOGY GROUP LTD ORD G5876H105 3,430 160,000 SH   SOLE   160,000 0 0
LIBERTY LATIN AMERICA LTD COM CL C G9001E128 28,930 1,492,800 SH   SOLE   1,460,200 0 32,600
ACI WORLDWIDE INC COM 004498101 9,251 375,000 SH   SOLE   375,000 0 0
ALPHABET INC CAP STK CL C 02079K107 106,247 95,233 SH   SOLE   94,033 0 1,200
ALPHABET INC CAP STK CL A 02079K305 142 126 SH   SOLE   126 0 0
AMAZON COM INC COM 023135106 19,752 11,620 SH   SOLE   11,620 0 0
ANHEUSER BUSCH INBEV SA/NV SPONSORED ADR 03524A108 1,713 17,000 SH   SOLE   17,000 0 0
APPLE INC COM 037833100 26 140 SH   SOLE   0 0 140
BERKSHIRE HATHAWAY INC DEL CL A 084670108 159,071 564 SH   SOLE   153 0 411
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 210,764 1,129,192 SH   SOLE   1,110,522 0 18,670
BOOKING HLDGS INC COM 09857L108 9,643 4,757 SH   SOLE   4,757 0 0
CARMAX INC COM 143130102 43,223 593,150 SH   SOLE   587,150 0 6,000
CHARTER COMMUNICATIONS INC N CL A 16119P108 9,383 32,000 SH   SOLE   32,000 0 0
COLFAX CORP COM 194014106 51,029 1,664,900 SH   SOLE   1,636,900 0 28,000
COMCAST CORP NEW CL A 20030N101 30,215 920,897 SH   SOLE   911,897 0 9,000
COMPASS MINERALS INTL INC COM 20451N101 9,402 143,000 SH   SOLE   143,000 0 0
DXC TECHNOLOGY CO COM 23355L106 39,326 487,852 SH   SOLE   481,352 0 6,500
DANAHER CORP DEL COM 235851102 23,647 239,637 SH   SOLE   237,437 0 2,200
DIAGEO P L C SPON ADR NEW 25243Q205 18,721 130,000 SH   SOLE   130,000 0 0
DISCOVERY INC COM SER C 25470F302 31,679 1,242,300 SH   SOLE   1,216,100 0 26,200
DOLLAR TREE INC COM 256746108 29,228 343,855 SH   SOLE   343,855 0 0
EQUITY COMWLTH COM SH BEN INT 294628102 8,001 254,000 SH   SOLE   254,000 0 0
FACEBOOK INC CL A 30303M102 54,311 279,493 SH   SOLE   277,693 0 1,800
FORTUNE BRANDS HOME & SEC IN COM 34964C106 2,685 50,000 SH   SOLE   50,000 0 0
GCI LIBERTY INC COM CLASS A 36164V305 27,936 619,700 SH   SOLE   613,700 0 6,000
GUIDEWIRE SOFTWARE INC COM 40171V100 6,215 70,000 SH   SOLE   70,000 0 0
INTELLIGENT SYS CORP NEW COM 45816D100 19,681 2,270,000 SH   SOLE   2,270,000 0 0
ISHARES TR RUS 1000 ETF 464287622 288 1,898 SH   SOLE   0 0 1,898
JPMORGAN CHASE & CO COM 46625H100 1,303 12,500 SH   SOLE   12,500 0 0
LABORATORY CORP AMER HLDGS COM NEW 50540R409 110,455 615,247 SH   SOLE   607,247 0 8,000
LIBERTY BROADBAND CORP COM SER A 530307107 26,474 350,000 SH   SOLE   350,000 0 0
LIBERTY BROADBAND CORP COM SER C 530307305 163,177 2,155,002 SH   SOLE   2,122,102 0 32,900
LIBERTY EXPEDIA HOLDINGS SER A COM 53046P109 13,182 300,000 SH   SOLE   300,000 0 0
LIBERTY MEDIA CORP DELAWARE COM A SIRIUSXM 531229409 17,795 395,000 SH   SOLE   395,000 0 0
LIBERTY MEDIA CORP DELAWARE COM C SIRIUSXM 531229607 65,092 1,435,005 SH   SOLE   1,410,505 0 24,500
LIBERTY MEDIA CORP DELAWARE COM A BRAVES GRP 531229706 797 31,000 SH   SOLE   31,000 0 0
LIBERTY MEDIA CORP DELAWARE COM SER C FRMLA 531229854 10,211 275,000 SH   SOLE   275,000 0 0
LIBERTY MEDIA CORP DELAWARE COM SER A FRMLA 531229870 2,737 77,500 SH   SOLE   77,500 0 0
LIBERTY MEDIA CORP DELAWARE COM C BRAVES GRP 531229888 6,336 245,000 SH   SOLE   245,000 0 0
LIONS GATE ENTMNT CORP CL A VTG 535919401 3,103 125,000 SH   SOLE   125,000 0 0
LIONS GATE ENTMNT CORP CL B NON VTG 535919500 3,519 150,000 SH   SOLE   150,000 0 0
MARKEL CORP COM 570535104 6,506 6,000 SH   SOLE   6,000 0 0
MARTIN MARIETTA MATLS INC COM 573284106 1,452 6,500 SH   SOLE   6,500 0 0
MASTERCARD INCORPORATED CL A 57636Q104 97,102 494,105 SH   SOLE   488,105 0 6,000
MICROSOFT CORP COM 594918104 1,479 15,000 SH   SOLE   15,000 0 0
MOHAWK INDS INC COM 608190104 15,211 70,990 SH   SOLE   70,990 0 0
MONDELEZ INTL INC CL A 609207105 1,230 30,000 SH   SOLE   30,000 0 0
MURPHY USA INC COM 626755102 4,339 58,400 SH   SOLE   58,400 0 0
ORACLE CORP COM 68389X105 62,361 1,415,363 SH   SOLE   1,395,463 0 19,900
PERSPECTA INC COM 715347100 10,869 528,926 SH   SOLE   525,676 0 3,250
PIONEER NAT RES CO COM 723787107 11,102 58,668 SH   SOLE   58,668 0 0
PRAXAIR INC COM 74005P104 27,668 174,950 SH   SOLE   174,950 0 0
QURATE RETAIL INC COM SER A 74915M100 37,331 1,759,250 SH   SOLE   1,722,250 0 37,000
RTW HLDGS INC NOTE 5.625%11/1 749772AB5 16,246 16,000,000 PRN   SOLE   16,000,000 0 0
REDWOOD TR INC NOTE 4.750% 8/1 758075AC9 14,582 15,000,000 PRN   SOLE   15,000,000 0 0
REDWOOD TR INC NOTE 5.625% 7/1 758075AD7 5,951 6,000,000 PRN   SOLE   6,000,000 0 0
REDWOOD TR INC COM 758075402 61,451 3,731,100 SH   SOLE   3,670,100 0 61,000
SPDR S&P 500 ETF TR TR UNIT 78462F103 49 180 SH   SOLE   0 0 180
SUMMIT MATLS INC CL A 86614U100 4,856 185,000 SH   SOLE   185,000 0 0
TEXAS INSTRS INC COM 882508104 42,366 384,270 SH   SOLE   376,070 0 8,200
THERMO FISHER SCIENTIFIC INC COM 883556102 27,223 131,424 SH   SOLE   131,424 0 0
TRANSDIGM GROUP INC COM 893641100 10,523 30,489 SH   SOLE   30,489 0 0
TUPPERWARE BRANDS CORP COM 899896104 30,868 748,500 SH   SOLE   737,000 0 11,500
TWENTY FIRST CENTY FOX INC CL A 90130A101 16,149 325,000 SH   SOLE   325,000 0 0
TWENTY FIRST CENTY FOX INC CL B 90130A200 286 5,808 SH   SOLE   5,808 0 0
VANGUARD BD INDEX FD INC INTERMED TERM 921937819 192 2,371 SH   SOLE   0 0 2,371
VANGUARD BD INDEX FD INC SHORT TRM BOND 921937827 367 4,692 SH   SOLE   0 0 4,692
VANGUARD TAX MANAGED INTL FD FTSE DEV MKT ETF 921943858 710 16,555 SH   SOLE   0 0 16,555
VANGUARD INDEX FDS TOTAL STK MKT 922908769 1,133 8,068 SH   SOLE   0 0 8,068
VISA INC COM CL A 92826C839 102,974 777,456 SH   SOLE   764,456 0 13,000
VULCAN MATLS CO COM 929160109 1,420 11,000 SH   SOLE   11,000 0 0
WELLS FARGO CO NEW COM 949746101 30,004 541,196 SH   SOLE   530,996 0 10,200
WESCO AIRCRAFT HLDGS INC COM 950814103 25,405 2,258,238 SH   SOLE   2,258,238 0 0
XO GROUP INC COM 983772104 132 4,137 SH   SOLE   4,137 0 0