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
ACTIVISION BLIZZARD INC COM 00507V109 15,606 294,900 SH   DFND 1 294,900 0 0
ADVANCE AUTO PARTS INC COM 00751Y106 967 5,845 SH   DFND 1 5,845 0 0
ALPHABET INC CAP STK CL C 02079K107 5,299 4,347 SH   DFND 1 4,347 0 0
ALPHABET INC CAP STK CL A 02079K305 5,183 4,244 SH   DFND 1 4,244 0 0
APPLE INC COM 037833100 1,957 8,740 SH   DFND 1 8,740 0 0
ARGAN INC COM 04010E109 1,289 32,800 SH   DFND 1 32,800 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 12,785 41 SH   DFND 1 41 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,437 6,906 SH   DFND 1 6,906 0 0
CARGURUS INC COM CL A 141788109 43,946 1,419,900 SH   DFND 1 1,419,900 0 0
CARMAX INC COM 143130102 3,404 38,680 SH   DFND 1 38,680 0 0
CASTLIGHT HEALTH INC CL B 14862Q100 222 157,372 SH   DFND 1 157,372 0 0
CHARTER COMMUNICATIONS INC N CL A 16119P108 1,273 3,088 SH   DFND 1 3,088 0 0
COCA COLA CO COM 191216100 3,585 65,854 SH   DFND 1 65,854 0 0
COMCAST CORP NEW CL A 20030N101 1,183 26,253 SH   DFND 1 26,253 0 0
EXPEDIA GROUP INC COM NEW 30212P303 3,289 24,470 SH   DFND 1 24,470 0 0
FACEBOOK INC CL A 30303M102 645 3,624 SH   DFND 1 3,624 0 0
FIRST REP BK SAN FRANCISCO C COM 33616C100 8,670 89,655 SH   DFND 1 89,655 0 0
IAC INTERACTIVECORP COM 44919P508 2,344 10,754 SH   DFND 1 10,754 0 0
LABORATORY CORP AMER HLDGS COM NEW 50540R409 1,164 6,929 SH   DFND 1 6,929 0 0
LIBERTY BROADBAND CORP COM SER C 530307305 4,319 41,261 SH   DFND 1 41,261 0 0
MASTERCARD INC CL A 57636Q104 17,396 64,056 SH   DFND 1 64,056 0 0
MICROSOFT CORP COM 594918104 929 6,683 SH   DFND 1 6,683 0 0
NEW RELIC INC COM 64829B100 20,900 340,108 SH   DFND 1 340,108 0 0
QUOTIENT TECHNOLOGY INC COM 749119103 571 73,066 SH   DFND 1 73,066 0 0
SVMK INC COM 78489X103 2,160 126,330 SH   DFND 1 126,330 0 0
THE CHARLES SCHWAB CORPORATI COM 808513105 23,822 569,490 SH   DFND 1 569,490 0 0
TRANSDIGM GROUP INC COM 893641100 1,439 2,764 SH   DFND 1 2,764 0 0
US FOODS HLDG CORP COM 912008109 1,257 30,575 SH   DFND 1 30,575 0 0
WORKDAY INC CL A 98138H101 19,034 111,992 SH   DFND 1 111,992 0 0