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 204,478 735,744 SH   DFND   0 0 0
CARMAX INC COM 143130102 143,468 1,110,864 SH   DFND   0 0 0
AMETEK INC COM 031100100 98,903 740,843 SH   DFND   0 0 0
ALPHABET INC CL-C CAP STK CL C 02079K107 96,651 38,563 SH   DFND   0 0 0
MARKEL CORP HOLDING COM 570535104 84,627 71,312 SH   DFND   0 0 0
FACEBOOK INC CL-A CL A 30303M102 81,467 234,295 SH   DFND   0 0 0
VISA INC CLASS-A COM CL A 92826C839 77,864 333,009 SH   DFND   0 0 0
SCHWAB CHARLES CORP COM 808513105 77,760 1,067,990 SH   DFND   0 0 0
PROGRESSIVE CORP OHIO COM 743315103 75,682 770,619 SH   DFND   0 0 0
NVR INC COM 62944T105 75,067 15,094 SH   DFND   0 0 0
HEICO CORP CLASS A CL A 422806208 71,845 578,552 SH   DFND   0 0 0
KEYSIGHT TECHNOLOGIES INC COM 49338L103 65,551 424,526 SH   DFND   0 0 0
FIVE BELOW INC COM 33829M101 60,967 315,449 SH   DFND   0 0 0
JP MORGAN CHASE & CO COM 46625H100 56,537 363,488 SH   DFND   0 0 0
BANK OF AMERICA COM 060505104 55,485 1,345,736 SH   DFND   0 0 0
FORTUNE BRNDS HME&SEC COM 34964C106 54,442 546,551 SH   DFND   0 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 42,001 405,529 SH   DFND   0 0 0
SLEEP NUMBER CORP COM 83125X103 38,168 347,140 SH   DFND   0 0 0
DISNEY WALT COMPANY COM 254687106 35,455 201,715 SH   DFND   0 0 0
INTERCONTINENTAL EXCHANGE COM 45866F104 35,440 298,565 SH   DFND   0 0 0
ALPHABET INC CL-A CAP STK CL A 02079K305 22,281 9,125 SH   DFND   0 0 0
AUTOHOME INC CL-A ADR SP ADR RP CL A 05278C107 22,114 345,744 SH   DFND   0 0 0
HEALTH CARE SERVICES GRP COM 421906108 11,692 370,345 SH   DFND   0 0 0
BANK OZK COM 06417N103 7,550 179,075 SH   DFND   0 0 0
SS&C TECHNOLOGIES INC COM 78467J100 5,911 82,023 SH   DFND   0 0 0
ARISTA NETWORKS INC COM 040413106 5,810 16,036 SH   SOLE   0 0 0
CREDIT ACCEPTANCE CORP COM 225310101 4,417 9,727 SH   DFND   0 0 0
LIBERTY BROADBAND CORP COM SER C 530307305 3,557 20,482 SH   SOLE   0 0 0
FIRST REP BK SAN FRANCISCO C COM 33616C100 3,399 18,158 SH   DFND   0 0 0
BERKSHIRE HATHAWAY-A CL A 084670108 3,349 8 SH   SOLE   0 0 0
MASTERCARD INC CL-A CL A 57636Q104 3,341 9,150 SH   DFND   0 0 0
SPDR S&P 500 ETF TR UNIT 78462F103 2,077 4,852 SH   DFND   0 0 0
LULULEMON ATHLETICA INC COM 550021109 1,684 4,615 SH   DFND   0 0 0
APPLE INC COM 037833100 1,619 11,822 SH   DFND   0 0 0
AMAZON COM INC COM 023135106 1,603 466 SH   DFND   0 0 0
JACOBS ENGR GROUP INC COM 469814107 1,531 11,477 SH   SOLE   0 0 0
BROOKFIELD ASSET MGT-A LV CL A LTD VT SH 112585104 1,074 16,989 SH   DFND   0 0 0
OLD DOMINION FREIGHT LINE COM 679580100 1,032 4,067 SH   DFND   0 0 0
TAIWAN SEMICON MAN SP/ADR SPONSORED ADS 874039100 990 8,240 SH   DFND   0 0 0
MICROSOFT CORP COM 594918104 969 3,578 SH   DFND   0 0 0
LITTELFUSE INC COM 537008104 710 2,788 SH   DFND   0 0 0
STARBUCKS CORP COM 855244109 707 6,327 SH   DFND   0 0 0
M & T BANK CORP COM 55261F104 680 4,683 SH   DFND   0 0 0
ROPER TECHNOLOGIES INC COM 776696106 628 1,335 SH   DFND   0 0 0
ISHARES SILVER TR ISHARES 46428Q109 567 23,400 SH   SOLE   0 0 0
TJX COMPANIES INC COM 872540109 557 8,264 SH   DFND   0 0 0
NOVO-NORDISK A/S-ADR ADR 670100205 519 6,200 SH   DFND   0 0 0
FASTENAL CO COM 311900104 466 8,954 SH   DFND   0 0 0
KNIGHT-SWIFT TRANSPORT-A CL A 499049104 366 8,046 SH   DFND   0 0 0
ISHARES US FINANCIALS ETF U.S. FINLS ETF 464287788 252 3,110 SH   DFND   0 0 0
ISHARES US HOME CONSTRUCT US HOME CONS ETF 464288752 204 2,943 SH   DFND   0 0 0
CGI INC CL A SUB VTG 12532H104 192 2,120 SH   DFND   0 0 0
INTUITIVE SURGICAL COM NEW 46120E602 124 135 SH   DFND   0 0 0
RESMED INC COM 761152107 108 437 SH   DFND   0 0 0
ELI LILLY & CO COM 532457108 99 432 SH   DFND   0 0 0
RITCHIE BROTHERS AUCTIONR COM 767744105 79 1,070 SH   DFND   0 0 0
NEW GOLD INC CDA COM 644535106 54 30,000 SH   SOLE   0 0 0