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
AMERICAN TOWER CORP NEW COM 03027X100 362,133 4,024,596 SH   SOLE   4,024,596 0 0
AMERICAN TOWER CORP NEW PFD CONV SER A 03027X308 10,640 100,000 SH   SOLE   100,000 0 0
ANNALY CAP MGMT INC COM 035710409 572 50,044 SH   SOLE   50,044 0 0
ANSYS INC COM 03662Q105 7,605 100,300 SH   SOLE   100,300 0 0
APPLE INC COM 037833100 59,219 637,238 SH   SOLE   637,238 0 0
ARLINGTON ASSET INVT CORP CL A NEW 041356205 273 10,000 SH   SOLE   10,000 0 0
BANK OF AMERICA CORPORATION *W EXP 01/16/201 060505146 4,802 700,000 SH   SOLE   700,000 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 39,311 310,611 SH   SOLE   310,611 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 9,875 52 SH   SOLE   52 0 0
CARMAX INC COM 143130102 31,206 600,000 SH   SOLE   600,000 0 0
COLFAX CORP COM 194014106 384,714 5,161,180 SH   SOLE   5,161,180 0 0
CROWN CASTLE INTL CORP CNV PFD STK SR A 228227500 1,600 15,700 SH   SOLE   15,700 0 0
CSX CORP COM 126408103 1,322 42,899 SH   SOLE   42,899 0 0
DANAHER CORP DEL COM 235851102 118,095 1,500,000 SH   SOLE   1,500,000 0 0
DIAMOND HILL INVESTMENT GROU COM NEW 25264R207 18,583 145,500 SH   SOLE   145,500 0 0
DISCOVERY COMMUNICATNS NEW COM SER A 25470F302 208,205 2,868,230 SH   SOLE   2,868,230 0 0
DOLLAR TREE INC COM 256746108 189,653 3,482,423 SH   SOLE   3,482,423 0 0
ENSTAR GROUP LIMITED SHS G3075P101 75,172 498,720 SH   SOLE   498,720 0 0
HARTFORD FINL SVCS GROUP INC COM 416515104 11,280 314,982 SH   SOLE   314,982 0 0
LAMAR ADVERTISING CO CL A 512815101 3,556 67,100 SH   SOLE   67,100 0 0
LEUCADIA NATL CORP COM 527288104 3,435 131,000 SH   SOLE   131,000 0 0
LIBERTY INTERACTIVE CORP INT COM SER A 53071M880 13,284 180,000 SH   SOLE   180,000 0 0
LIVE NATION ENTERTAINMENT IN COM 538034109 156,781 6,350,000 SH   SOLE   6,350,000 0 0
LPL FINL HLDGS INC COM 50212V100 85,304 1,715,000 SH   SOLE   1,715,000 0 0
MARKEL CORP COM 570535104 323,410 493,273 SH   SOLE   493,273 0 0
MARKWEST ENERGY PARTNERS L P UNIT LTD PARTN 570759100 50,605 706,965 SH   SOLE   706,965 0 0
MASTERCARD INC CL A 57636Q104 314,363 4,278,795 SH   SOLE   4,278,795 0 0
MONRO MUFFLER BRAKE INC COM 610236101 26,595 500,000 SH   SOLE   500,000 0 0
MOODYS CORP COM 615369105 305,244 3,482,130 SH   SOLE   3,482,130 0 0
NUSTAR GP HOLDINGS LLC UNIT RESTG LLC 67059L102 1,086 27,775 SH   SOLE   27,775 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 123,683 821,267 SH   SOLE   821,267 0 0
PRIMO WTR CORP COM 74165N105 7,632 1,600,000 SH   SOLE   1,600,000 0 0
ROPER INDS INC NEW COM 776696106 99,564 681,900 SH   SOLE   681,900 0 0
SBA COMMUNICATIONS CORP COM 78388J106 122,760 1,200,000 SH   SOLE   1,200,000 0 0
TD AMERITRADE HLDG CORP COM 87236Y108 99,032 3,158,900 SH   SOLE   3,158,900 0 0
TRANSDIGM GROUP INC COM 893641100 1,673 10,000 SH   SOLE   10,000 0 0
VERISK ANALYTICS INC CL A 92345Y106 48,016 800,000 SH   SOLE   800,000 0 0
VISA INC COM CL A 92826C839 120,195 570,430 SH   SOLE   570,430 0 0
WILLIAMS COS INC DEL COM 969457100 1,061 18,230 SH   SOLE   18,230 0 0