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
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
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 37,256,639 124,650 SH SOLE 124,650 0 0
ACI WORLDWIDE INC COM 004498101 14,048,460 306,000 SH SOLE 306,000 0 0
ALPHABET INC CAP STK CL C 02079K107 79,044,984 445,600 SH SOLE 445,600 0 0
AMAZON COM INC COM 023135106 48,814,275 222,500 SH SOLE 222,500 0 0
ANALOG DEVICES INC COM 032654105 33,560,820 141,000 SH SOLE 141,000 0 0
AON PLC SHS CL A G0403H108 76,150,422 213,450 SH SOLE 213,450 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 139,343,125 286,850 SH SOLE 286,850 0 0
BIO-TECHNE CORP COM 09073M104 41,270,618 802,150 SH SOLE 802,150 0 0
CARMAX INC COM 143130102 43,646,174 649,400 SH SOLE 649,400 0 0
CHARTER COMMUNICATIONS INC CL A 16119P108 38,612,105 94,450 SH SOLE 94,450 0 0
COMCAST CORP NEW CL A 20030N101 16,114,035 451,500 SH SOLE 451,500 0 0
CORECARD CORPORATION COM 45816D100 14,919,550 515,000 SH SOLE 515,000 0 0
COSTAR GROUP INC COM 22160N109 61,554,240 765,600 SH SOLE 765,600 0 0
DANAHER CORPORATION COM 235851102 104,093,703 526,950 SH SOLE 526,950 0 0
DIAGEO PLC SPON ADR NEW 25243Q205 2,853,772 28,300 SH SOLE 28,300 0 0
EQUIFAX INC COM 294429105 54,558,480 210,350 SH SOLE 210,350 0 0
FORTIVE CORP COM 34959J108 2,369,309 45,450 SH SOLE 45,450 0 0
GARTNER INC COM 366651107 35,541,044 87,925 SH SOLE 87,925 0 0
GLOBAL PMTS INC COM 37940X102 44,822,400 560,000 SH SOLE 560,000 0 0
HEICO CORP NEW CL A 422806208 42,150,375 162,900 SH SOLE 162,900 0 0
IDEX CORP COM 45167R104 71,320,923 406,225 SH SOLE 406,225 0 0
IDEXX LABS INC COM 45168D104 32,341,302 60,300 SH SOLE 60,300 0 0
LABCORP HOLDINGS INC COM SHS 504922105 37,059,849 141,175 SH SOLE 141,175 0 0
LIBERTY BROADBAND CORP COM SER A 530307107 13,694,800 140,000 SH SOLE 140,000 0 0
LIBERTY BROADBAND CORP COM SER C 530307305 49,239,190 500,500 SH SOLE 500,500 0 0
LINDE PLC SHS G54950103 3,237,342 6,900 SH SOLE 6,900 0 0
LKQ CORP COM 501889208 16,961,683 458,300 SH SOLE 458,300 0 0
MARTIN MARIETTA MATLS INC COM 573284106 22,658,324 41,275 SH SOLE 41,275 0 0
MASTERCARD INCORPORATED CL A 57636Q104 92,759,436 165,070 SH SOLE 165,070 0 0
META PLATFORMS INC CL A 30303M102 85,404,394 115,710 SH SOLE 115,710 0 0
MICROSOFT CORP COM 594918104 64,402,160 129,475 SH SOLE 129,475 0 0
OLD DOMINION FREIGHT LINE IN COM 679580100 33,839,550 208,500 SH SOLE 208,500 0 0
ORACLE CORP COM 68389X105 37,183,497 170,075 SH SOLE 170,075 0 0
PERIMETER SOLUTIONS INC COM 71385M107 27,295,728 1,960,900 SH SOLE 1,960,900 0 0
RALLIANT CORP COM 750940108 734,624 15,150 SH SOLE 15,150 0 0
ROPER TECHNOLOGIES INC COM 776696106 17,812,947 31,425 SH SOLE 31,425 0 0
RWT HLDGS INC NOTE 5.750%10/0 749772AD1 3,507,000 3,500,000 SH SOLE 3,500,000 0 0
S&P GLOBAL INC COM 78409V104 3,764,851 7,140 SH SOLE 7,140 0 0
SALESFORCE COM INC COM 79466L302 23,860,375 87,500 SH SOLE 87,500 0 0
SIRIUSXM HOLDINGS INC COMMON STOCK 829933100 31,790,480 1,384,000 SH SOLE 1,384,000 0 0
TEXAS INSTRS INC COM 882508104 34,169,062 164,575 SH SOLE 164,575 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 61,001,457 150,450 SH SOLE 150,450 0 0
VERALTO CORP COM SHS 92338C103 3,785,625 37,500 SH SOLE 37,500 0 0
VISA INC COM CL A 92826C839 105,831,529 298,075 SH SOLE 298,075 0 0
VULCAN MATLS CO COM 929160109 55,267,758 211,900 SH SOLE 211,900 0 0