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
AC IMMUNE SA SHS H00263105 234 42,100 SH   SOLE (NONE) 42,100 0 0
ACTIVISION BLIZZARD INC COM 00507V109 618 13,100 SH   SOLE (NONE) 13,100 0 0
ADOBE INC COM 00724F101 14,220 48,260 SH   SOLE (NONE) 48,260 0 0
ALIBABA GROUP HLDG LTD SPONSORED ADS 01609W102 14,890 87,872 SH   SOLE (NONE) 87,872 0 0
ALLERGAN PLC SHS G0177J108 8,037 48,000 SH   SOLE (NONE) 48,000 0 0
ALPHABET INC CAP STK CL A 02079K305 19,938 18,413 SH   SOLE (NONE) 18,413 0 0
ALPHABET INC CAP STK CL C 02079K107 3,243 3,000 SH   SOLE (NONE) 3,000 0 0
ALTABA INC COM 021346101 18,289 263,646 SH   SOLE (NONE) 263,646 0 0
ALTERYX INC COM CL A 02156B103 273 2,500 SH   SOLE (NONE) 2,500 0 0
AMAZON COM INC COM 023135106 33,356 17,615 SH   SOLE (NONE) 17,615 0 0
ANADARKO PETE CORP COM 032511107 31,025 439,700 SH   SOLE (NONE) 439,700 0 0
ANALOG DEVICES INC COM 032654105 542 4,800 SH   SOLE (NONE) 4,800 0 0
ANAPTYSBIO INC COM 032724106 220 3,900 SH   SOLE (NONE) 3,900 0 0
APELLIS PHARMACEUTICALS INC COM 03753U106 385 15,200 SH   SOLE (NONE) 15,200 0 0
ARCUS BIOSCIENCES INC COM 03969F109 126 15,900 SH   SOLE (NONE) 15,900 0 0
ARQULE INC COM 04269E107 392 35,600 SH   SOLE (NONE) 35,600 0 0
ARRAY BIOPHARMA INC COM 04269X105 1,886 40,700 SH   SOLE (NONE) 40,700 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 944 8,200 SH   SOLE (NONE) 8,200 0 0
ATLASSIAN CORP PLC CL A G06242104 6,751 51,600 SH   SOLE (NONE) 51,600 0 0
AXONICS MODULATION TECH INC COM 05465P101 221 5,400 SH   SOLE (NONE) 5,400 0 0
AXSOME THERAPEUTICS INC COM 05464T104 237 9,200 SH   SOLE (NONE) 9,200 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 26,241 123,100 SH   SOLE (NONE) 123,100 0 0
BERKSHIRE HATHAWAY INC DEL CALL OPTIONS 084670902 10,658 50,000 SH Call SOLE (NONE) 0 0 0
BIOHAVEN PHARMACTL HLDG CO L COM G11196105 206 4,700 SH   SOLE (NONE) 4,700 0 0
BLUEPRINT MEDICINES CORP COM 09627Y109 481 5,100 SH   SOLE (NONE) 5,100 0 0
CAESARS ENTMT CORP COM 127686103 5,201 440,000 SH   SOLE (NONE) 440,000 0 0
CANADIAN NATL RY CO COM 136375102 8,805 95,214 SH   SOLE (NONE) 95,214 0 0
CANADIAN PAC RY LTD COM 13645T100 12,393 52,682 SH   SOLE (NONE) 52,682 0 0
CARBON BLACK INC COM 14081R103 2,556 152,900 SH   SOLE (NONE) 152,900 0 0
CELGENE CORP COM 151020104 17,758 192,100 SH   SOLE (NONE) 192,100 0 0
CERIDIAN HCM HLDG INC COM 15677J108 778 15,500 SH   SOLE (NONE) 15,500 0 0
CHARTER COMMUNICATIONS INC N CL A 16119P108 2,924 7,400 SH   SOLE (NONE) 7,400 0 0
CHEWY INC CL A 16679L109 1,138 32,500 SH   SOLE (NONE) 32,500 0 0
SELECT SECTOR SPDR TR SBI CONS STPLS 81369Y308 10,888 187,500 SH   SOLE (NONE) 187,500 0 0
SELECT SECTOR SPDR TR CALL OPTIONS 81369Y908 5,807 100,000 SH Call SOLE (NONE) 0 0 0
COUPA SOFTWARE INC COM 22266L106 14,982 118,335 SH   SOLE (NONE) 118,335 0 0
CROWDSTRIKE HLDGS INC CL A 22788C105 4,610 67,500 SH   SOLE (NONE) 67,500 0 0
CYTOKINETICS INC COM NEW 23282W605 242 21,500 SH   SOLE (NONE) 21,500 0 0
DICERNA PHARMACEUTICALS INC COM 253031108 233 14,800 SH   SOLE (NONE) 14,800 0 0
DXC TECHNOLOGY CO COM 23355L106 281 5,100 SH   SOLE (NONE) 5,100 0 0
ELECTRONIC ARTS INC COM 285512109 770 7,600 SH   SOLE (NONE) 7,600 0 0
EQUIFAX INC COM 294429105 203 1,500 SH   SOLE (NONE) 1,500 0 0
FACEBOOK INC CL A 30303M102 15,932 82,551 SH   SOLE (NONE) 82,551 0 0
FARFETCH LTD ORD SH CL A 30744W107 3,296 158,460 SH   SOLE (NONE) 158,460 0 0
FERRARI N V COM N3167Y103 242 1,500 SH   SOLE (NONE) 1,500 0 0
FIRST DATA CORP NEW COM CL A 32008D106 3,725 137,600 SH   SOLE (NONE) 137,600 0 0
FIVE PRIME THERAPEUTICS INC COM 33830X104 104 17,300 SH   SOLE (NONE) 17,300 0 0
GAMESTOP CORP NEW CL A 36467W109 1,368 250,000 SH   SOLE (NONE) 250,000 0 0
GCI LIBERTY INC COM CLASS A 36164V305 9,470 154,092 SH   SOLE (NONE) 154,092 0 0
GRUPO FINANCIERO GALICIA S A CALL OPTIONS 399909900 1,775 50,000 SH Call SOLE (NONE) 0 0 0
GRUPO FINANCIERO GALICIA S A SPONSORED ADR 399909100 1,700 47,900 SH   SOLE (NONE) 47,900 0 0
INFINITY PHARMACEUTICALS INC COM 45665G303 177 98,400 SH   SOLE (NONE) 98,400 0 0
INTUIT COM 461202103 575 2,200 SH   SOLE (NONE) 2,200 0 0
ISHARES TR PFD AND INCM SEC 464288687 8,385 227,554 SH   SOLE (NONE) 227,554 0 0
ISHARES TR CALL OPTIONS 464287905 46,650 300,000 SH Call SOLE (NONE) 0 0 0
KAR AUCTION SVCS INC COM 48238T109 1,250 50,000 SH   SOLE (NONE) 50,000 0 0
KURA ONCOLOGY INC COM 50127T109 394 20,000 SH   SOLE (NONE) 20,000 0 0
LAS VEGAS SANDS CORP COM 517834107 496 8,400 SH   SOLE (NONE) 8,400 0 0
LIBERTY MEDIA CORP DELAWARE COM A SIRIUSXM 531229409 4,714 124,678 SH   SOLE (NONE) 124,678 0 0
LIBERTY MEDIA CORP DELAWARE COM C SIRIUSXM 531229607 304 8,000 SH   SOLE (NONE) 8,000 0 0
LIBERTY MEDIA CORP DELAWARE COM C BRAVES GRP 531229888 1,978 70,703 SH   SOLE (NONE) 70,703 0 0
LOWES COS INC COM 548661107 343 3,400 SH   SOLE (NONE) 3,400 0 0
LUCKIN COFFEE INC SPONSORED ADS 54951L109 2,234 114,600 SH   SOLE (NONE) 114,600 0 0
LYONDELLBASELL INDUSTRIES N PUT OPTIONS N53745950 4,306 50,000 SH Put SOLE (NONE) 0 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 8,613 100,000 SH   SOLE (NONE) 100,000 0 0
MARATHON PETE CORP COM 56585A102 28,592 511,659 SH   SOLE (NONE) 511,659 0 0
MASTERCARD INC CL A 57636Q104 14,533 54,940 SH   SOLE (NONE) 54,940 0 0
SPDR S&P MIDCAP 400 ETF TR CALL OPTIONS 78467Y907 17,730 50,000 SH Call SOLE (NONE) 0 0 0
SPDR S&P MIDCAP 400 ETF TR UTSER1 S&PDCRP 78467Y107 10,638 30,000 SH   SOLE (NONE) 30,000 0 0
MELLANOX TECHNOLOGIES LTD SHS M51363113 1,660 15,000 SH   SOLE (NONE) 15,000 0 0
MERCADOLIBRE INC COM 58733R102 673 1,100 SH   SOLE (NONE) 1,100 0 0
MERUS N V COM N5749R100 334 22,785 SH   SOLE (NONE) 22,785 0 0
MICRON TECHNOLOGY INC COM 595112103 1,574 40,800 SH   SOLE (NONE) 40,800 0 0
MICROSOFT CORP COM 594918104 40,969 305,832 SH   SOLE (NONE) 305,832 0 0
MIMECAST LTD ORD SHS G14838109 3,578 76,600 SH   SOLE (NONE) 76,600 0 0
MIRATI THERAPEUTICS INC COM 60468T105 711 6,900 SH   SOLE (NONE) 6,900 0 0
MOLECULAR TEMPLATES INC COM 608550109 169 20,200 SH   SOLE (NONE) 20,200 0 0
MONGODB INC CL A 60937P106 1,202 7,900 SH   SOLE (NONE) 7,900 0 0
MOODYS CORP COM 615369105 1,055 5,400 SH   SOLE (NONE) 5,400 0 0
NETFLIX INC COM 64110L106 19,107 52,018 SH   SOLE (NONE) 52,018 0 0
NEW YORK TIMES CO CL A 650111107 603 18,500 SH   SOLE (NONE) 18,500 0 0
OKTA INC CL A 679295105 605 4,900 SH   SOLE (NONE) 4,900 0 0
ORCHARD THERAPEUTICS PLC ADS 68570P101 200 14,300 SH   SOLE (NONE) 14,300 0 0
PAGSEGURO DIGITAL LTD COM CL A G68707101 6,451 165,550 SH   SOLE (NONE) 165,550 0 0
PAMPA ENERGIA S A SPONS ADR LVL I 697660207 1,378 39,750 SH   SOLE (NONE) 39,750 0 0
PAYPAL HLDGS INC COM 70450Y103 15,269 133,400 SH   SOLE (NONE) 133,400 0 0
PERSPECTA INC COM 715347100 288 12,300 SH   SOLE (NONE) 12,300 0 0
PLURALSIGHT INC COM CL A 72941B106 203 6,700 SH   SOLE (NONE) 6,700 0 0
QUOTIENT LTD SHS G73268107 182 19,500 SH   SOLE (NONE) 19,500 0 0
RA PHARMACEUTICALS INC COM 74933V108 409 13,600 SH   SOLE (NONE) 13,600 0 0
REATA PHARMACEUTICALS INC CL A 75615P103 245 2,600 SH   SOLE (NONE) 2,600 0 0
RED HAT INC COM 756577102 26,474 141,000 SH   SOLE (NONE) 141,000 0 0
RESTAURANT BRANDS INTL INC COM 76131D103 243 3,500 SH   SOLE (NONE) 3,500 0 0
REVOLVE GROUP INC CL A 76156B107 3,616 104,800 SH   SOLE (NONE) 104,800 0 0
RINGCENTRAL INC CL A 76680R206 483 4,200 SH   SOLE (NONE) 4,200 0 0
ROKU INC COM CL A 77543R102 625 6,900 SH   SOLE (NONE) 6,900 0 0
ROYAL CARIBBEAN CRUISES LTD COM V7780T103 4,890 40,340 SH   SOLE (NONE) 40,340 0 0
S&P GLOBAL INC COM 78409V104 410 1,800 SH   SOLE (NONE) 1,800 0 0
SAGE THERAPEUTICS INC COM 78667J108 201 1,100 SH   SOLE (NONE) 1,100 0 0
SAILPOINT TECHNLGIES HLDGS I COM 78781P105 2,521 125,800 SH   SOLE (NONE) 125,800 0 0
SALESFORCE COM INC COM 79466L302 2,936 19,348 SH   SOLE (NONE) 19,348 0 0
SCIENTIFIC GAMES CORP COM 80874P109 222 11,200 SH   SOLE (NONE) 11,200 0 0
SEA LTD SPONSORED ADS 81141R100 1,950 58,700 SH   SOLE (NONE) 58,700 0 0
SERVICENOW INC COM 81762P102 10,008 36,448 SH   SOLE (NONE) 36,448 0 0
SHOPIFY INC CL A 82509L107 750 2,500 SH   SOLE (NONE) 2,500 0 0
SLACK TECHNOLOGIES INC COM CL A 83088V102 1,312 35,000 SH   SOLE (NONE) 35,000 0 0
SMARTSHEET INC COM CL A 83200N103 581 12,000 SH   SOLE (NONE) 12,000 0 0
SNAP INC CL A 83304A106 167 11,700 SH   SOLE (NONE) 11,700 0 0
SPRINT CORPORATION COM 85207U105 2,497 380,000 SH   SOLE (NONE) 380,000 0 0
SPDR S&P 500 ETF TR CALL OPTIONS 78462F903 43,950 150,000 SH Call SOLE (NONE) 0 0 0
SQUARE INC CL A 852234103 537 7,400 SH   SOLE (NONE) 7,400 0 0
STONECO LTD COM CL A G85158106 349 11,800 SH   SOLE (NONE) 11,800 0 0
SYNDAX PHARMACEUTICALS INC COM 87164F105 104 11,200 SH   SOLE (NONE) 11,200 0 0
SYNTHORX INC COM 87167A103 290 21,458 SH   SOLE (NONE) 21,458 0 0
TABLEAU SOFTWARE INC CL A 87336U105 10,194 61,400 SH   SOLE (NONE) 61,400 0 0
TALEND S A ADS 874224207 7,942 205,800 SH   SOLE (NONE) 205,800 0 0
TG THERAPEUTICS INC COM 88322Q108 198 22,900 SH   SOLE (NONE) 22,900 0 0
THIRD PT REINS LTD COM G8827U100 1,443 139,787 SH   SOLE (NONE) 139,787 0 0
THE TRADE DESK INC COM CL A 88339J105 251 1,100 SH   SOLE (NONE) 1,100 0 0
TRANSPORTADORA DE GAS SUR SPONSORED ADS B 893870204 1,261 87,200 SH   SOLE (NONE) 87,200 0 0
TURNING POINT THERAPEUTICS I COM 90041T108 537 13,200 SH   SOLE (NONE) 13,200 0 0
ULTA BEAUTY INC COM 90384S303 4,232 12,200 SH   SOLE (NONE) 12,200 0 0
UNION PACIFIC CORP COM 907818108 1,150 6,800 SH   SOLE (NONE) 6,800 0 0
UNIVAR INC COM 91336L107 289 13,100 SH   SOLE (NONE) 13,100 0 0
VANECK VECTORS ETF TR JP MORGAN MKTS 92189H300 28,606 824,378 SH   SOLE (NONE) 824,378 0 0
VANGUARD INDEX FDS REAL ESTATE ETF 922908553 7,210 82,500 SH   SOLE (NONE) 82,500 0 0
VANGUARD INDEX FDS CALL OPTIONS 922908903 2,185 25,000 SH Call SOLE (NONE) 0 0 0
VERSUM MATLS INC COM 92532W103 3,817 74,000 SH   SOLE (NONE) 74,000 0 0
WAVE LIFE SCIENCES LTD SHS Y95308105 566 21,700 SH   SOLE (NONE) 21,700 0 0
WAYFAIR INC CL A 94419L101 613 4,200 SH   SOLE (NONE) 4,200 0 0
WORKDAY INC CL A 98138H101 8,567 41,670 SH   SOLE (NONE) 41,670 0 0
WORLDPAY INC CL A 981558109 11,532 94,100 SH   SOLE (NONE) 94,100 0 0
XENON PHARMACEUTICALS INC COM 98420N105 100 10,100 SH   SOLE (NONE) 10,100 0 0
XILINX INC COM 983919101 495 4,200 SH   SOLE (NONE) 4,200 0 0
XOMA CORP DEL COM NEW 98419J206 149 10,000 SH   SOLE (NONE) 10,000 0 0
SPDR SERIES TRUST CALL OPTIONS 78464A904 6,355 150,000 SH Call SOLE (NONE) 0 0 0
YELP INC CL A 985817105 338 9,900 SH   SOLE (NONE) 9,900 0 0
ZAYO GROUP HLDGS INC COM 98919V105 3,199 97,200 SH   SOLE (NONE) 97,200 0 0
ZENDESK INC COM 98936J101 855 9,600 SH   SOLE (NONE) 9,600 0 0
ZILLOW GROUP INC CL C CAP STK 98954M200 3,373 72,700 SH   SOLE (NONE) 72,700 0 0
ZOGENIX INC COM NEW 98978L204 320 6,700 SH   SOLE (NONE) 6,700 0 0