The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete. | |||||||||||||||||||||
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 | 1,066 | 400 | SH | DFND | 1 | 0 | 400 | 0 | |
ALPHABET INC | CAP STK CL A | 02079K305 | 1,337 | 500 | SH | DFND | 1 | 0 | 500 | 0 | |
ALPHABET INC | CAP STK CL A | 02079K305 | 331,000 | 123,807 | SH | DFND | 1 | 0 | 123,807 | 0 | |
ALPHABET INC | CAP STK CL C | 02079K107 | 228,617 | 85,775 | SH | DFND | 1 | 0 | 85,775 | 0 | |
AMAZON COM INC | COM | 023135106 | 821 | 250 | SH | DFND | 1 | 0 | 250 | 0 | |
BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 | 123,414 | 300 | SH | DFND | 1 | 0 | 300 | 0 | |
BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | 8,674 | 31,780 | SH | DFND | 1 | 0 | 31,780 | 0 | |
CREDIT ACCEP CORP MICH | COM | 225310101 | 100,384 | 171,508 | SH | DFND | 1 | 0 | 171,508 | 0 | |
FACEBOOK INC | CL A | 30303M102 | 59,393 | 175,000 | SH | DFND | 1 | 0 | 175,000 | 0 | |
INTERACTIVE BROKERS GROUP IN | COM CL A | 45841N107 | 1,688 | 27,074 | SH | DFND | 1 | 0 | 27,074 | 0 | |
INTERACTIVE BROKERS GROUP IN | COM CL A | 45841N107 | 3,740 | 60,000 | SH | DFND | 1 | 0 | 60,000 | 0 | |
MARKEL CORP | COM | 570535104 | 2,779 | 2,325 | SH | DFND | 1 | 0 | 2,325 | 0 | |
MERCADOLIBRE INC | COM | 58733R102 | 1,176 | 700 | SH | DFND | 1 | 0 | 700 | 0 | |
MERCADOLIBRE INC | COM | 58733R102 | 2,183 | 1,300 | SH | DFND | 1 | 0 | 1,300 | 0 | |
MICROSOFT CORP | COM | 594918104 | 218,065 | 773,500 | SH | DFND | 1 | 0 | 773,500 | 0 | |
MICROSOFT CORP | COM | 594918104 | 2,537 | 9,000 | SH | DFND | 1 | 0 | 90,000 | 0 | |
SALESFORCE COM INC | COM | 79466L302 | 57,099 | 210,528 | SH | DFND | 1 | 0 | 210,528 | 0 | |
TUCOWS INC | COM NEW | 898697206 | 7,421 | 94,000 | SH | DFND | 1 | 0 | 94,000 | 0 | |
TUCOWS INC | COM NEW | 898697206 | 9,869 | 125,000 | SH | DFND | 1 | 0 | 125,000 | 0 | |
TUCOWS INC | COM NEW | 898697206 | 2,763 | 35,000 | SH | DFND | 1 | 0 | 35,000 | 0 | |
TUCOWS INC | COM NEW | 898697206 | 111,591 | 1,413,439 | SH | DFND | 1 | 0 | 1,413,439 | 0 | |
WIX COM LTD | SHS | M98068105 | 50,952 | 260,000 | SH | DFND | 1 | 0 | 260,000 | 0 |