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

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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
ALIBABA GROUP HLDG LTD SPONSORED ADS 01609W102 5,168 47,500 SH   SOLE   47,500 0 0
ALPHABET INC CAP STK CL A 02079K305 2,225 800 SH   SOLE   800 0 0
AMERICAN EXPRESS CO COM 025816109 39,270 210,000 SH   SOLE   210,000 0 0
BK OF AMERICA CORP COM 060505104 31,651 767,845 SH   SOLE   767,845 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 15,868 30 SH   SOLE   30 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 49,619 140,600 SH   SOLE   140,600 0 0
DAILY JOURNAL CORP COM 233912104 3,588 11,500 SH   SOLE   11,500 0 0
FERRARI N V COM N3167Y103 17,592 80,000 SH   SOLE   80,000 0 0
MASTERCARD INC CL A 57636Q104 23,498 65,750 SH   SOLE   65,750 0 0
MICRON TECHNOLOGY INC COM 595112103 15,578 200,000 SH   SOLE   200,000 0 0
MOODYS CORP COM 615369105 9,110 27,000 SH   SOLE   27,000 0 0
SERITAGE GROWTH PPTYS CL A 81752R100 6,330 500,000 SH   SOLE   500,000 0 0
TWITTER INC COM 90184L102 1,161 30,000 SH   SOLE   30,000 0 0