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
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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
BERKSHIRE HATHAWAY-B-NEW CL B NEW 084670702 181,179 870,968 SH   DFND   0 0 0
CARMAX INC COM 143130102 107,634 1,223,108 SH   DFND   0 0 0
AMETEK INC COM 031100100 73,219 797,424 SH   DFND   0 0 0
NVR INC COM 62944T105 53,753 14,460 SH   DFND   0 0 0
VISA INC CLASS-A COM CL A 92826C839 53,243 309,533 SH   DFND   0 0 0
HEICO CORP CLASS A CL A 422806208 47,212 485,174 SH   DFND   0 0 0
MARKEL CORP HOLDING COM 570535104 45,281 38,312 SH   DFND   0 0 0
ALPHABET INC CL-C CAP STK CL C 02079K107 43,429 35,627 SH   DFND   0 0 0
JP MORGAN CHASE & CO COM 46625H100 39,754 337,782 SH   DFND   0 0 0
SCHWAB CHARLES CORP COM 808513105 39,160 936,161 SH   DFND   0 0 0
FORTUNE BRNDS HME&SEC COM 34964C106 33,955 620,746 SH   DFND   0 0 0
FACEBOOK INC CL-A CL A 30303M102 31,512 176,952 SH   DFND   0 0 0
KEYSIGHT TECHNOLOGIES INC COM 49338L103 29,182 300,068 SH   DFND   0 0 0
BANK OF AMERICA COM 060505104 27,587 945,735 SH   DFND   0 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 27,980 127,233 SH   DFND   0 0 0
DISNEY WALT COMPANY COM 254687106 25,637 196,724 SH   DFND   0 0 0
UNION PACIFIC CORP COM 907818108 25,919 160,011 SH   DFND   0 0 0
M & T BANK CORP COM 55261F104 21,810 138,067 SH   DFND   0 0 0
LITTELFUSE INC COM 537008104 20,332 114,671 SH   DFND   0 0 0
PROGRESSIVE CORP OHIO COM 743315103 20,722 268,243 SH   DFND   0 0 0
BANK OZK COM 06417N103 19,982 732,756 SH   DFND   0 0 0
O'REILLY AUTOMOTIVE COM 67103H107 11,123 27,911 SH   DFND   0 0 0
HEALTH CARE SERVICES GRP COM 421906108 7,673 315,908 SH   DFND   0 0 0
ALPHABET INC CL-A CAP STK CL A 02079K305 7,053 5,776 SH   DFND   0 0 0
LULULEMON ATHLETICA INC COM 550021109 894 4,645 SH   SOLE   0 0 0
BROOKFIELD ASSET MGT-A LV CL A LTD VT SH 112585104 687 12,938 SH   DFND   0 0 0
SPDR S&P 500 ETF TR UNIT 78462F103 1,571 5,295 SH   DFND   0 0 0
OLD DOMINION FREIGHT LINE COM 679580100 461 2,712 SH   SOLE   0 0 0
FIVE BELOW INC COM 33829M101 453 3,596 SH   DFND   0 0 0
ROPER TECHNOLOGIES INC COM 776696106 444 1,245 SH   SOLE   0 0 0
LIBERTY MEDIA-C LIB FORM CL C 531229854 442 10,630 SH   DFND   0 0 0
MOHAWK INDS INC COM 608190104 616 4,961 SH   DFND   0 0 0
TJX COMPANIES INC COM 872540109 506 9,082 SH   DFND   0 0 0
APPLE INC COM 037833100 476 2,127 SH   SOLE   0 0 0
MASTERCARD INC CL-A CL A 57636Q104 554 2,039 SH   DFND   0 0 0
KNIGHT-SWIFT TRANSPORT-A CL A 499049104 292 8,046 SH   SOLE   0 0 0
FASTENAL CO COM 311900104 266 8,154 SH   DFND   0 0 0
SOUTHWEST AIRLINES CO COM 844741108 234 4,334 SH   DFND   0 0 0
BERKSHIRE HATHAWAY-A-NEW CL A 084670108 935 3 SH   SOLE   0 0 0