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
ALPHABET INC CAP STK CL C 02079K107 23,488 14,490 SH   SOLE   14,490 0 0
ALPHABET INC CAP STK CL A 02079K305 76,277 47,198 SH   SOLE   47,198 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 99,977 495,183 SH   SOLE   495,183 0 0
HERBALIFE NUTRITION LTD COM SHS G4412G101 93,045 2,061,245 SH   SOLE   2,061,245 0 0
INTERACTIVE BROKERS GROUP COM CL A 45841N107 62,093 1,305,296 SH   SOLE   1,305,296 0 0
VISA INC COM CL A 92826C839 72,313 397,957 SH   SOLE   397,957 0 0
SPDR S&P 500 ETF TR TR UNIT 78462F103 50,445 15,000 SH Call SOLE   15,000 0 0
NEWMONT CORP COM 651639106 23,936 380,903 SH   SOLE   380,903 0 0
CORTEVA NC COM 22052L104 27,562 835,714 SH   SOLE   835,714 0 0
STATE STR CORP COM 857477103 15,963 271,026 SH   SOLE   271,026 0 0
BANK NEW YORK MELLON CORP COM 064058100 16,839 490,085 SH   SOLE   490,085 0 0
MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 2,052 531,510 SH   SOLE   531,510 0 0
GRAHAM HLDGS CO COM CL B 384637104 3,868 10,171 SH   SOLE   10,171 0 0