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 A | 02079K305 | 22,887 | 30,000 | SH | DFND | 1 | 0 | 30,000 | 0 | |
| ALPHABET INC | CAP STK CL A | 02079K305 | 1,373 | 1,800 | SH | DFND | 1 | 0 | 1,800 | 0 | |
| ALPHABET INC | CAP STK CL A | 02079K305 | 1,678 | 2,200 | SH | DFND | 1 | 0 | 2,200 | 0 | |
| ALPHABET INC | CAP STK CL A | 02079K305 | 30,272 | 39,680 | SH | DFND | 1 | 0 | 39,680 | 0 | |
| ALPHABET INC | CAP STK CL C | 02079K107 | 25,906 | 34,775 | SH | DFND | 1 | 0 | 34,775 | 0 | |
| AMAZON INC | COM | 023135106 | 445 | 750 | SH | DFND | 1 | 0 | 750 | 0 | |
| BAIDU INC | SPON ADR REP A | 056752108 | 13,362 | 70,000 | SH | DFND | 1 | 0 | 70,000 | 0 | |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 | 10,673 | 50 | SH | DFND | 1 | 0 | 50 | 0 | |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 | 100,535 | 471 | SH | DFND | 1 | 0 | 471 | 0 | |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | 4,509 | 31,780 | SH | DFND | 1 | 0 | 31,780 | 0 | |
| CREDIT ACCEP CORP MICH | COM | 225310101 | 15,523 | 85,503 | SH | DFND | 1 | 0 | 85,503 | 0 | |
| DANAHER CORP DEL | COM | 235851102 | 1,043 | 11,000 | SH | DFND | 1 | 0 | 11,000 | 0 | |
| DEERE & CO | COM | 244199105 | 19,045 | 247,373 | SH | DFND | 1 | 0 | 247,373 | 0 | |
| FASTENAL CO | COM | 311900104 | 735 | 15,000 | SH | DFND | 1 | 0 | 15,000 | 0 | |
| FASTENAL CO | COM | 311900104 | 39,200 | 800,000 | SH | DFND | 1 | 0 | 800,000 | 0 | |
| LEUCADIA NATL CORP | COM | 527288104 | 889 | 55,000 | SH | DFND | 1 | 0 | 55,000 | 0 | |
| LEUCADIA NATL CORP | COM | 527288104 | 728 | 45,000 | SH | DFND | 1 | 0 | 45,000 | 0 | |
| MARKEL CORP | COM | 570535104 | 2,073 | 2,325 | SH | DFND | 1 | 0 | 2,325 | 0 | |
| MICROSOFT CORP | COM | 594918104 | 1,215 | 22,000 | SH | DFND | 1 | 0 | 22,000 | 0 | |
| MICROSOFT CORP | COM | 594918104 | 552 | 10,000 | SH | DFND | 1 | 0 | 10,000 | 0 | |
| MICROSOFT CORP | COM | 594918104 | 34,795 | 630,000 | SH | DFND | 1 | 0 | 630,000 | 0 | |
| NATIONAL OILWELL VARCO INC | COM | 637071101 | 902 | 29,000 | SH | DFND | 1 | 0 | 29,000 | 0 | |
| NATIONAL OILWELL VARCO INC | COM | 637071101 | 638 | 20,500 | SH | DFND | 1 | 0 | 20,500 | 0 | |
| NOW INC | COM | 67011P100 | 886 | 50,000 | SH | DFND | 1 | 0 | 50,000 | 0 | |
| NOW INC | COM | 67011P100 | 886 | 50,000 | SH | DFND | 1 | 0 | 50,000 | 0 | |
| NOW INC | COM | 67011P100 | 6,923 | 390,700 | SH | DFND | 1 | 0 | 390,700 | 0 | |
| TRUPANION INC | COM | 898202106 | 9,132 | 927,091 | SH | DFND | 1 | 0 | 927,091 | 0 | |
| VERISIGN INC | COM | 93243E102 | 35,416 | 400,000 | SH | DFND | 1 | 0 | 400,000 | 0 | |
| WABTEC | COM | 929740108 | 71 | 900 | SH | DFND | 1 | 0 | 900 | 0 | |