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
Expires: July 31, 2015
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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
ALPHABET INC CAP STK CL A 02079K305 69,761,876 202,749 SH SOLE 202,749 0 0
ALPHABET INC CAP STK CL C 02079K107 724,072 2,125 SH SOLE 2,125 0 0
AMAZON COM INC COM 023135106 101,581,943 407,714 SH SOLE 407,714 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 123,736,591 248,492 SH SOLE 248,492 0 0
BROOKFIELD ASSET MANAGMT LTD CL A LMT VTG SHS 113004105 9,497,145 213,036 SH SOLE 213,036 0 0
BROOKFIELD CORP CL A LTD VT SH 11271J107 78,622,599 2,156,407 SH SOLE 2,156,407 0 0
COPART INC COM 217204106 49,090,333 1,799,499 SH SOLE 1,799,499 0 0
ECOLAB INC COM 278865100 64,164,953 233,684 SH SOLE 233,684 0 0
FACTSET RESH SYS INC COM 303075105 40,892,026 151,480 SH SOLE 151,480 0 0
FASTENAL CO COM 311900104 1,436,370 29,000 SH SOLE 29,000 0 0
INVESCO EXCHANGE TRADED FD T S&P500 EQL WGT 46137V357 238,183 1,145 SH SOLE 1,145 0 0
JPMORGAN CHASE & CO COM 46625H100 71,890,021 217,302 SH SOLE 217,302 0 0
MARTIN MARIETTA MATLS INC COM 573284106 74,363,833 154,986 SH SOLE 154,986 0 0
NETFLIX INC. COM 64110L106 64,876,183 932,397 SH SOLE 932,397 0 0
NIKE INC CL B 654106103 23,302,333 658,258 SH SOLE 658,258 0 0
PAYCHEX INC COM 704326107 68,600,325 696,450 SH SOLE 696,450 0 0
PROGRESSIVE CORP COM 743315103 150,906,754 727,928 SH SOLE 727,928 0 0
REGENERON PHARMACEUTICALS COM 75886F107 130,914,557 172,649 SH SOLE 172,649 0 0
UNION PAC CORP COM 907818108 50,410,450 185,244 SH SOLE 185,244 0 0
WELLS FARGO & CO COM 949746101 43,123,015 538,701 SH SOLE 538,701 0 0