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
ALARM COM HLDGS INC COM 011642105 11,132 400,000 SH   SOLE   400,000 0 0
AMERICAN INTL GROUP INC W EXP 01/19/202 026874156 2,480 105,728 SH   SOLE   105,728 0 0
AMERICAN TOWER CORP NEW COM 03027X100 708,213 6,701,490 SH   SOLE   6,701,490 0 0
AMERICAN TOWER CORP NEW PFD CONV SER A 03027X308 10,482 100,000 SH   SOLE   100,000 0 0
AMERICAN TOWER CORP NEW PFD CONV SER B 03027X407 53,791 514,748 SH   SOLE   514,748 0 0
BANK OF AMERICA CORPORATION W EXP 01/16/201 060505146 3,386 732,890 SH   SOLE   732,890 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 62,566 383,889 SH   SOLE   383,889 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 12,694 52 SH   SOLE   52 0 0
CARMAX INC COM 143130102 332,090 5,157,481 SH   SOLE   5,157,481 0 0
COLFAX CORP COM 194014106 168,871 4,700,000 SH   SOLE   4,700,000 0 0
CSX CORP COM 126408103 1,393 38,781 SH   SOLE   38,781 0 0
DANAHER CORP DEL COM 235851102 128,849 1,655,300 SH   SOLE   1,655,300 0 0
DIAMOND HILL INVESTMENT GROU COM NEW 25264R207 30,610 145,500 SH   SOLE   145,500 0 0
DISNEY WALT CO COM DISNEY 254687106 406 3,891 SH   SOLE   3,891 0 0
DOLLAR GEN CORP NEW COM 256677105 111,105 1,500,000 SH   SOLE   1,500,000 0 0
DOLLAR TREE INC COM 256746108 323,131 4,186,715 SH   SOLE   4,186,715 0 0
DULUTH HLDGS INC COM CL B 26443V101 8,926 351,400 SH   SOLE   351,400 0 0
ENSTAR GROUP LIMITED SHS G3075P101 286,222 1,447,760 SH   SOLE   1,447,760 0 0
FORTIVE CORP COM 34959J108 40,222 750,000 SH   SOLE   750,000 0 0
LKQ CORP COM 501889208 108,807 3,550,000 SH   SOLE   3,550,000 0 0
LAMAR ADVERTISING CO CL A 512816109 3,263 48,530 SH   SOLE   48,530 0 0
MARKEL CORP COM 570535104 464,858 513,939 SH   SOLE   513,939 0 0
MASTERCARD INC CL A 57636Q104 485,419 4,701,391 SH   SOLE   4,701,391 0 0
MONRO MUFFLER BRAKE INC COM 610236101 87,094 1,522,630 SH   SOLE   1,522,630 0 0
MOODYS CORP COM 615369105 439,361 4,660,664 SH   SOLE   4,660,664 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 229,374 823,873 SH   SOLE   823,873 0 0
PRIMO WTR CORP COM 74165N105 20,622 1,679,313 SH   SOLE   1,679,313 0 0
ROPER INDS INC NEW COM 776696106 285,521 1,559,542 SH   SOLE   1,559,542 0 0
SBA COMMUNICATIONS CORP COM 78388J106 254,536 2,465,000 SH   SOLE   2,465,000 0 0
TD AMERITRADE HLDG CORP COM 87236Y108 129,383 2,967,500 SH   SOLE   2,967,500 0 0
UBIQUITI NETWORKS INC COM 90347A100 154,904 2,680,000 SH   SOLE   2,680,000 0 0
VERISK ANALYTICS INC CL A 92345Y106 209,791 2,584,593 SH   SOLE   2,584,593 0 0
VISA INC COM CL A 92826C839 282,584 3,621,940 SH   SOLE   3,621,940 0 0
WMIH Corp COM 92936P100 2,263 1,460,000 SH   SOLE   1,460,000 0 0