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
Estimated average burden
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
ADOBE INC COM 00724F101 896,082 1,530,090 SH   SOLE   1,530,090 0 0
ALARM COM HLDGS INC COM 011642105 167,592 1,978,658 SH   SOLE   1,978,658 0 0
AMERICAN TOWER CORP NEW COM 03027X100 1,895,373 7,016,262 SH   SOLE   7,016,262 0 0
ANSYS INC COM 03662Q105 211,625 609,764 SH   SOLE   609,764 0 0
BROOKFIELD ASSET MGMT REINS CL A EXCH LT VTG G16169107 4,678 89,922 SH   SOLE   89,922 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,988 17,949 SH   SOLE   17,949 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 664,784 13,040,095 SH   SOLE   13,040,095 0 0
CARMAX INC COM 143130102 918,658 7,113,107 SH   SOLE   7,113,107 0 0
COSTAR GROUP INC COM 22160N109 808,953 9,767,600 SH   SOLE   9,767,600 0 0
DANAHER CORP DEL COM 235851102 444,216 1,655,300 SH   SOLE   1,655,300 0 0
DIGITALBRIDGE GROUP INC CL A COM 25401T108 82,988 10,504,800 SH   SOLE   10,504,800 0 0
DOLLAR TREE INC COM 256746108 356,973 3,587,666 SH   SOLE   3,587,666 0 0
GOOSEHEAD INS INC COM CL A 38267D109 37,345 293,366 SH   SOLE   293,366 0 0
KKR & CO L P DEL COM UNITS 48251w104 872,768 14,732,744 SH   SOLE   14,732,744 0 0
MARKEL CORP COM 570535104 16,167 13,623 SH   SOLE   13,623 0 0
MASTERCARD INC CL A 57636Q104 2,141,804 5,866,510 SH   SOLE   5,866,510 0 0
MOODYS CORP COM 615369105 2,038,424 5,625,255 SH   SOLE   5,625,255 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 895,469 1,581,514 SH   SOLE   1,581,514 0 0
OLLIES BARGAIN OUTLT HLDGS I COM 681116109 42,065 500,000 SH   SOLE   500,000 0 0
ROPER INDS INC NEW COM 776696106 782,896 1,665,028 SH   SOLE   1,665,028 0 0
SBA COMMUNICATIONS CORP COM 78410G104 615,152 1,930,190 SH   SOLE   1,930,190 0 0
SALESFORCE COM INC COM 79466L302 683,956 2,800,000 SH   SOLE   2,800,000 0 0
THREDUP INC CL A 88556E102 654 22,500 SH   SOLE   22,500 0 0
VERISK ANALYTICS INC CL A 92345Y106 427,525 2,446,916 SH   SOLE   2,446,916 0 0
VISA INC COM CL A 92826C839 1,226,325 5,244,738 SH   SOLE   5,244,738 0 0