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 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
ALIBABA GROUP HLDG LTDSPONSORED ADS01609W102107,427552,383SH SOLE 552,38300
ALPHABET INCCAP STK CL A02079K30550,08843,107SH SOLE 43,10700
ALPHABET INCCAP STK CL C02079K10749,97942,981SH SOLE 42,98100
AMAZON COM INCCOM023135106117,88060,460SH SOLE 60,46000
APPLE INCCOM037833100127,410501,044SH SOLE 501,04400
ARCOS DORADOS HOLDINGS INCSHS CLASS -A -G0457F10710,2223,060,500SH SOLE 3,060,50000
BERKSHIRE HATHAWAY INC DELCL B NEW0846707028,211,35744,912,525SH SOLE 44,912,52500
CANADIAN NATL RY COCOM1363751021,329,55917,126,874SH SOLE 17,126,87400
CATERPILLAR INC DELCOM1491231011,306,71011,260,857SH SOLE 11,260,85700
COCA COLA FEMSA S A B DE C VSPONSORD ADR REP191241108250,0186,214,719SH SOLE 6,214,71900
CROWN CASTLE INTL CORP NEWCOM22822V101770,0715,332,900SH SOLE 5,332,90000
ECOLAB INCCOM278865100680,4204,366,426SH SOLE 4,366,42600
FEDEX CORPCOM31428X106366,8113,024,999SH SOLE 3,024,99900
GRUPO TELEVISA SASPON ADR REP ORD40049J20697,89916,879,104SH SOLE 16,879,10400
LIBERTY GLOBAL PLCSHS CL AG5480U10434,9932,119,515SH SOLE 2,119,51500
LIBERTY GLOBAL PLCSHS CL CG5480U12057,1743,639,349SH SOLE 3,639,34900
LIBERTY LATIN AMERICA LTDCOM CL AG9001E1023,897370,424SH SOLE 370,42400
LIBERTY LATIN AMERICA LTDCOM CL CG9001E1286,526636,044SH SOLE 636,04400
SCHRODINGER INCCOM80810D103301,0496,981,665SH SOLE 6,981,66500
TWITTER INCCOM90184L1026,691272,420SH SOLE 272,42000
UNITED PARCEL SERVICE INCCL B911312106422,7564,525,329SH SOLE 4,525,32900
WALMART INCCOM9311421031,318,33311,603,000SH SOLE 11,603,00000
WASTE MGMT INC DELCOM94106L1091,724,73318,633,672SH SOLE 18,633,67200