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
ABERDEEN STD PLATINUM ETF TR PHYSCL PLATM SHS 003260106 257 3,079 SH   SOLE N/A 3,079 0 0
AERCAP HOLDINGS NV SHS N00985106 17,395 317,723 SH   SOLE N/A 317,723 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 628 30,000 SH   SOLE N/A 30,000 0 0
ALIBABA GROUP HLDG LTD SPONSORED ADS 01609W102 2,224 13,300 SH   OTR N/A 0 13,300 0
ALTERYX INC COM CL A 02156B103 537 5,000 SH   SOLE N/A 5,000 0 0
ALTICE USA INC CL A 02156K103 5,850 203,981 SH   SOLE N/A 203,981 0 0
AMAZON COM INC COM 023135106 10,882 6,269 SH   SOLE N/A 6,269 0 0
AMEREN CORP COM 023608102 6,171 77,086 SH   SOLE N/A 77,086 0 0
ANAPLAN INC COM 03272L108 470 10,000 SH   SOLE N/A 10,000 0 0
ARCONIC INC COM 03965L100 2,259 86,900 SH   OTR N/A 0 86,900 0
ARISTA NETWORKS INC COM 040413106 1,493 6,248 SH   OTR N/A 0 6,248 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 963 10,000 SH   SOLE N/A 10,000 0 0
AUTONATION INC COM 05329W102 2,535 50,000 SH   SOLE N/A 50,000 0 0
AYTU BIOSCIENCE INC COM PAR 054754700 123 101,800 SH   SOLE N/A 101,800 0 0
BANDWIDTH INC COM CL A 05988J103 3,076 47,250 SH   OTR N/A 0 47,250 0
BBQ HLDGS INC COM 05551A109 8,242 1,685,556 SH   SOLE N/A 1,685,556 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,495 141,791 SH   SOLE N/A 141,791 0 0
BLACKBERRY LTD COM 09228F103 735 140,000 SH   OTR N/A 0 140,000 0
BOX INC CL A 10316T104 1,122 67,745 SH   SOLE N/A 67,745 0 0
CARBONITE INC COM 141337105 1,330 85,850 SH   SOLE N/A 85,850 0 0
CITRIX SYS INC COM 177376100 4,161 43,110 SH   SOLE N/A 43,110 0 0
CLOUDERA INC COM 18914U100 2,515 283,900 SH   SOLE N/A 283,900 0 0
COLFAX CORP COM 194014106 48,187 1,658,201 SH   SOLE N/A 1,658,201 0 0
DHT HOLDINGS INC SHS NEW Y2065G121 3,117 506,872 SH   SOLE N/A 506,872 0 0
DIAMEDICA THERAPEUTICS INC COM NEW 25253X207 184 88,860 SH   SOLE N/A 88,860 0 0
DIAMONDBACK ENERGY INC COM 25278X109 39,593 440,368 SH   SOLE N/A 440,368 0 0
DISCOVERY INC COM SER A 25470F104 2,511 94,286 SH   SOLE N/A 94,286 0 0
DISNEY WALT CO COM DISNEY 254687106 3,350 25,705 SH   OTR N/A 0 25,705 0
DOMINION ENERGY INC COM 25746U109 11,645 143,695 SH   SOLE N/A 143,695 0 0
DOMO INC COM CL B 257554105 6,604 413,277 SH   SOLE N/A 413,277 0 0
DORCHESTER MINERALS LP COM UNIT 25820R105 3,008 161,303 SH   SOLE N/A 161,303 0 0
DROPBOX INC CL A 26210C104 1,197 59,345 SH   SOLE N/A 59,345 0 0
DXC TECHNOLOGY CO COM 23355L106 4,301 145,800 SH   SOLE N/A 145,800 0 0
EIDOS THERAPEUTICS INC COM 28249H104 719 20,000 SH   SOLE N/A 20,000 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 45,937 3,511,985 SH   SOLE N/A 3,511,985 0 0
ENSTAR GROUP LIMITED SHS G3075P101 342 1,802 SH   OTR N/A 0 1,802 0
ENTERPRISE PRODS PARTNERS L COM 293792107 30,638 1,072,003 SH   SOLE N/A 1,072,003 0 0
EURONAV NV ANTWERPEN SHS B38564108 2,596 282,182 SH   SOLE N/A 282,182 0 0
EXPEDIA GROUP INC COM NEW 30212P303 1,059 7,880 SH   SOLE N/A 7,880 0 0
FIDELITY NATL INFORMATION SV COM 31620M106 4,714 35,506 SH   SOLE N/A 35,506 0 0
FIRSTENERGY CORP COM 337932107 8,401 174,196 SH   SOLE N/A 174,196 0 0
FORESCOUT TECHNOLOGIES INC COM 34553D101 4,279 112,841 SH   OTR N/A 0 112,841 0
GENERAL MTRS CO COM 37045V100 6,967 185,892 SH   SOLE N/A 185,892 0 0
GLOBAL PMTS INC COM 37940X102 3,758 23,638 SH   SOLE N/A 23,638 0 0
HCA HEALTHCARE INC COM 40412C101 4,445 36,914 SH   SOLE N/A 36,914 0 0
HYATT HOTELS CORP COM CL A 448579102 22,594 306,686 SH   SOLE N/A 306,686 0 0
IMMUCELL CORP COM PAR 452525306 364 65,426 SH   SOLE N/A 65,426 0 0
INPHI CORP COM 45772F107 4,114 67,382 SH   OTR N/A 0 67,382 0
INTUITIVE SURGICAL INC COM NEW 46120E602 4,311 7,984 SH   SOLE N/A 7,984 0 0
INVESCO EXCHNG TRADED FD TR SR LN ETF 46138G508 1,807 80,000 SH   SOLE N/A 80,000 0 0
INVESCO QQQ TR UNIT SER 1 46090E103 587 3,107 SH   SOLE N/A 3,107 0 0
IONIS PHARMACEUTICALS INC COM 462222100 922 15,385 SH   SOLE N/A 15,385 0 0
ISHARES SILVER TRUST ISHARES 46428Q109 375 23,564 SH   SOLE N/A 23,564 0 0
ISHARES TR 20 YR TR BD ETF 464287432 940 6,567 SH   SOLE N/A 6,567 0 0
ISHARES TR CORE MSCI EAFE 46432F842 500 8,195 SH   SOLE N/A 8,195 0 0
ISHARES TR CORE S&P SCP ETF 464287804 278 3,569 SH   SOLE N/A 3,569 0 0
ISHARES TR IBOXX INV CP ETF 464287242 994 7,801 SH   SOLE N/A 7,801 0 0
ISHARES TR MSCI ACWI ETF 464288257 23,676 321,026 SH   SOLE N/A 321,026 0 0
JETBLUE AWYS CORP COM 477143101 15,315 914,311 SH   SOLE N/A 914,311 0 0
LIBERTY GLOBAL PLC SHS CL C G5480U120 39,941 1,678,910 SH   SOLE N/A 1,678,910 0 0
LIBERTY MEDIA CORP DELAWARE COM C SIRIUSXM 531229607 30,731 732,383 SH   SOLE N/A 732,383 0 0
LITHIA MTRS INC CL A 536797103 1,317 9,950 SH   SOLE N/A 9,950 0 0
MAMMOTH ENERGY SVCS INC COM 56155L108 54,542 21,992,677 SH   SOLE N/A 21,992,677 0 0
MARATHON PETE CORP COM 56585A102 9,975 164,205 SH   SOLE N/A 164,205 0 0
MASTERCARD INC CL A 57636Q104 1,318 4,855 SH   SOLE N/A 4,855 0 0
MICRON TECHNOLOGY INC COM 595112103 1,620 37,812 SH   OTR N/A 0 37,812 0
MICROSOFT CORP COM 594918104 6,381 45,900 SH   SOLE N/A 45,900 0 0
MIMECAST LTD ORD SHS G14838109 954 26,734 SH   SOLE N/A 26,734 0 0
NEW RELIC INC COM 64829B100 9,591 156,074 SH   SOLE N/A 156,074 0 0
NEWELL BRANDS INC COM 651229106 10,751 574,312 SH   SOLE N/A 574,312 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 4,679 88,544 SH   SOLE N/A 88,544 0 0
NISOURCE INC COM 65473P105 3,132 104,675 SH   SOLE N/A 104,675 0 0
NORFOLK SOUTHERN CORP COM 655844108 2,040 11,357 SH   SOLE N/A 11,357 0 0
PAN AMERICAN SILVER CORP COM 697900108 1,568 100,000 SH   SOLE N/A 100,000 0 0
POST HLDGS INC COM 737446104 212 2,000 SH   OTR N/A 0 2,000 0
PTC INC COM 69370C100 1,048 15,366 SH   SOLE N/A 15,366 0 0
QUALCOMM INC COM 747525103 5,929 77,733 SH   SOLE N/A 77,733 0 0
RAMBUS INC DEL COM 750917106 4,883 372,000 SH   OTR N/A 0 372,000 0
ROYAL CARIBBEAN CRUISES LTD COM V7780T103 10,453 96,488 SH   OTR N/A 0 96,488 0
SALESFORCE COM INC COM 79466L302 229 1,540 SH   SOLE N/A 1,540 0 0
SANOFI RIGHT 12/31/2020 80105N113 280 500,000 SH   SOLE N/A 500,000 0 0
SCIENCE APPLICATNS INTL CP N COM 808625107 1,139 13,035 SH   SOLE N/A 13,035 0 0
SCORPIO TANKERS INC SHS Y7542C130 2,614 87,845 SH   SOLE N/A 87,845 0 0
SEAWORLD ENTMT INC COM 81282V100 15,231 578,675 SH   SOLE N/A 578,675 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 2,862 139,931 SH   SOLE N/A 139,931 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 362 2,605 SH   SOLE N/A 2,605 0 0
SPDR S&P 500 ETF TR TR UNIT 78462F103 874 2,946 SH   SOLE N/A 2,946 0 0
SPLUNK INC COM 848637104 4,388 37,229 SH   SOLE N/A 37,229 0 0
STARS GROUP INC COM 85570W100 6,848 457,147 SH   SOLE N/A 457,147 0 0
T MOBILE US INC COM 872590104 11,465 145,544 SH   SOLE N/A 145,544 0 0
TALEND S A ADS 874224207 760 22,368 SH   SOLE N/A 22,368 0 0
TARGET CORP COM 87612E106 1,222 11,430 SH   SOLE N/A 11,430 0 0
TENABLE HLDGS INC COM 88025T102 671 30,000 SH   SOLE N/A 30,000 0 0
TJX COS INC NEW COM 872540109 306 5,492 SH   SOLE N/A 5,492 0 0
TOWER SEMICONDUCTOR LTD SHS NEW M87915274 3,562 185,154 SH   OTR N/A 0 185,154 0
TRIPADVISOR INC COM 896945201 7,321 189,278 SH   SOLE N/A 189,278 0 0
VANECK VECTORS ETF TR GOLD MINERS ETF 92189F106 11,457 428,945 SH   SOLE N/A 428,945 0 0
VANECK VECTORS ETF TR JR GOLD MINERS E 92189F791 7,624 210,267 SH   SOLE N/A 210,267 0 0
VANGUARD CHARLOTTE FDS INTL BD IDX ETF 92203J407 207 3,526 SH   SOLE N/A 3,526 0 0
VANGUARD GROUP DIV APP ETF 921908844 1,002 8,382 SH   SOLE N/A 8,382 0 0
VEREIT INC COM 92339V100 250 25,523 SH   SOLE N/A 25,523 0 0
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 10,749 388,469 SH   SOLE N/A 388,469 0 0
VISA INC COM CL A 92826C839 2,560 14,880 SH   SOLE N/A 14,880 0 0
WAVE LIFE SCIENCES LTD SHS Y95308105 1,586 77,240 SH   SOLE N/A 77,240 0 0
WESTERN DIGITAL CORP COM 958102105 1,133 19,000 SH   OTR N/A 0 19,000 0
WHEATON PRECIOUS METALS CORP COM 962879102 2,755 105,000 SH   SOLE N/A 105,000 0 0
XENIA HOTELS & RESORTS INC COM 984017103 697 33,000 SH   SOLE N/A 33,000 0 0
ZUORA INC COM CL A 98983V106 239 15,900 SH   SOLE N/A 15,900 0 0