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
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 107,332 344,930 SH   SOLE   344,930 0 0
IMAX CORP COM 45245E109 83,744 2,304,361 SH   SOLE   2,304,361 0 0
ITURAN LOCATION AND CONTROL SHS M6158M104 27,234 507,269 SH   SOLE   507,269 0 0
LIBERTY MEDIA CORP DELAWARE COM A SIRIUSXM 531229409 2,074 33,300 SH   SOLE   33,300 0 0
LIBERTY MEDIA CORP DELAWARE COM C SIRIUSXM 531229607 83,434 1,340,131 SH   SOLE   1,340,131 0 0
LIONS GATE ENTMNT CORP CL A VTG 535919401 86,501 1,629,750 SH   SOLE   1,629,750 0 0
LIONS GATE ENTMNT CORP CL B NON VTG 535919500 104,803 2,103,381 SH   SOLE   2,103,381 0 0
MITEL NETWORKS CORP COM 60671Q104 3,101 240,000 SH   SOLE   240,000 0 0
ON TRACK INNOVATION LTD SHS M8791A109 1,121 525,427 SH   SOLE   525,427 0 0
T MOBILE US INC COM 872590104 72,681 729,000 SH   SOLE   729,000 0 0