The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete. | |||||||||||||||||
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F INFORMATION TABLE |
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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 |
| ALPHABET INC | CAP STK CL C | 02079K107 | 139,073 | 178,920 | SH | SOLE | 178,920 | 0 | 0 | ||
| AMERCO | COM | 023586100 | 48,209 | 148,687 | SH | SOLE | 148,687 | 0 | 0 | ||
| BUILDERS FIRSTSOURCE INC | COM | 12008R107 | 12,482 | 1,084,470 | SH | SOLE | 1,084,470 | 0 | 0 | ||
| CHARTER COMMUNICATIONS INC N | CL A | 16119P108 | 39,601 | 146,685 | SH | SOLE | 146,685 | 0 | 0 | ||
| CREDIT ACCEP CORP MICH | COM | 225310101 | 40,705 | 202,440 | SH | SOLE | 202,440 | 0 | 0 | ||
| FERRARI N V | COM | N3167Y103 | 31,152 | 600,585 | SH | SOLE | 600,585 | 0 | 0 | ||
| INTERACTIVE BROKERS GROUP IN | COM | 45841N107 | 117,039 | 3,318,373 | SH | SOLE | 3,318,373 | 0 | 0 | ||
| LIBERTY GLOBAL PLC | SHS CL C | G5480U120 | 36,423 | 1,102,395 | SH | SOLE | 1,102,395 | 0 | 0 | ||
| RUSH ENTERPRISES INC | CL A | 781846209 | 27,881 | 1,138,939 | SH | SOLE | 1,138,939 | 0 | 0 | ||
| RUSH ENTERPRISES INC | CL B | 781846308 | 21,465 | 882,962 | SH | SOLE | 882,962 | 0 | 0 | ||
| TWENTY FIRST CENTY FOX INC | CL A | 90130A101 | 815 | 33,665 | SH | SOLE | 33,665 | 0 | 0 | ||
| TWENTY FIRST CENTY FOX INC | CL B | 90130A200 | 32,533 | 1,315,000 | SH | SOLE | 1,315,000 | 0 | 0 | ||