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
3M CO COM 88579Y101 1,623 10,902 SH   SOLE   0 0 10,902
ABBOTT LABS COM 002824100 320 2,703 SH   SOLE   0 0 2,703
ABBVIE INC COM 00287Y109 677 4,177 SH   SOLE   0 0 4,177
ACTIVISION BLIZZARD INC COM 00507V109 5,794 72,322 SH   SOLE   0 0 72,322
ADOBE SYSTEMS INCORPORATED COM 00724F101 1,093 2,400 SH   SOLE   0 0 2,400
ALIBABA GROUP HLDG LTD SPONSORED ADS 01609W102 2,830 26,013 SH   SOLE   0 0 26,013
ALLEGHANY CORP DEL COM 017175100 3,925 4,634 SH   SOLE   0 0 4,634
ALPHABET INC CAP STK CL C 02079K107 1,092 391 SH   SOLE   0 0 391
ALPHABET INC CAP STK CL A 02079K305 2,901 1,043 SH   SOLE   0 0 1,043
AMAZON COM INC COM 023135106 414 127 SH   SOLE   0 0 127
AMERICAN INTL GROUP INC COM NEW 026874784 396 6,301 SH   SOLE   0 0 6,301
ANTERO MIDSTREAM CORP COM 03676B102 1,365 125,600 SH   SOLE   0 0 125,600
ANTERO RESOURCES CORP COM 03674X106 24,024 786,900 SH   SOLE   0 0 786,900
AON PLC SHS CL A G0403H108 366 1,123 SH   SOLE   0 0 1,123
APPLE INC COM 037833100 3,845 22,023 SH   SOLE   0 0 22,023
APTOSE BIOSCIENCES INC COM NEW 03835T200 272 200,000 SH   SOLE   0 0 200,000
ARCH CAP GROUP LTD ORD G0450A105 3,535 73,006 SH   SOLE   0 0 73,006
BARCLAYS PLC ADR 06738E204 243 30,817 SH   SOLE   0 0 30,817
BERKLEY W R CORP COM 084423102 1,150 17,271 SH   SOLE   0 0 17,271
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,862 25,110 SH   SOLE   0 0 25,110
BHP GROUP PLC SPONSORED ADR 05545E209 1,645 21,300 SH   SOLE   0 0 21,300
BK OF AMERICA CORP COM 060505104 1,148 27,855 SH   SOLE   0 0 27,855
BLACK KNIGHT INC COM 09215C105 1,218 21,000 SH   SOLE   0 0 21,000
BLACK STONE MINERALS L P COM UNIT 09225M101 171 12,724 SH   SOLE   0 0 12,724
BOOKING HOLDINGS INC COM 09857L108 1,456 620 SH   SOLE   0 0 620
CBOE GLOBAL MKTS INC COM 12503M108 596 5,208 SH   SOLE   0 0 5,208
CDW CORP COM 12514G108 1,139 6,366 SH   SOLE   0 0 6,366
CHEMED CORP NEW COM 16359R103 1,038 2,050 SH   SOLE   0 0 2,050
CISCO SYS INC COM 17275R102 5,071 90,944 SH   SOLE   0 0 90,944
CITIGROUP INC COM NEW 172967424 217 4,067 SH   SOLE   0 0 4,067
CONOCOPHILLIPS COM 20825C104 1,858 18,579 SH   SOLE   0 0 18,579
COPART INC COM 217204106 1,029 8,200 SH   SOLE   0 0 8,200
CSW INDUSTRIALS INC COM 126402106 627 5,332 SH   SOLE   0 0 5,332
DIMENSIONAL ETF TRUST US TARGETED VLU 25434V609 306 6,566 SH   SOLE   0 0 6,566
DISNEY WALT CO COM 254687106 295 2,151 SH   SOLE   0 0 2,151
DOLLAR TREE INC COM 256746108 264 1,650 SH   SOLE   0 0 1,650
EBAY INC. COM 278642103 1,764 30,800 SH   SOLE   0 0 30,800
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 9,213 823,337 SH   SOLE   0 0 823,337
ENERPLUS CORP COM 292766102 259 20,420 SH   SOLE   0 0 20,420
ENSTAR GROUP LIMITED SHS G3075P101 1,777 6,803 SH   SOLE   0 0 6,803
ENTERPRISE PRODS PARTNERS L COM 293792107 4,538 175,828 SH   SOLE   0 0 175,828
EOG RES INC COM 26875P101 537 4,500 SH   SOLE   0 0 4,500
EQT CORP COM 26884L109 240 6,965 SH   SOLE   0 0 6,965
EXTREME NETWORKS INC COM 30226D106 151 12,400 SH   SOLE   0 0 12,400
EXXON MOBIL CORP COM 30231G102 477 5,770 SH   SOLE   0 0 5,770
FACEBOOK INC CL A 30303M102 6,289 28,281 SH   SOLE   0 0 28,281
FIDELITY NATL INFORMATION SV COM 31620M106 862 8,579 SH   SOLE   0 0 8,579
FISERV INC COM 337738108 1,248 12,304 SH   SOLE   0 0 12,304
GENERAL ELECTRIC CO COM 369604103 280 3,062 SH   SOLE   0 0 3,062
GLOBAL X FDS GLB X MLP ENRG I 37954Y293 10,583 247,722 SH   SOLE   0 0 247,722
GODADDY INC CL A 380237107 946 11,300 SH   SOLE   0 0 11,300
HARLEY DAVIDSON INC COM 412822108 260 6,600 SH   SOLE   0 0 6,600
HOLLY ENERGY PARTNERS L P COM UT LTD PTN 435763107 1,344 76,000 SH   SOLE   0 0 76,000
HOME DEPOT INC COM 437076102 4,681 15,637 SH   SOLE   0 0 15,637
INGREDION INC COM 457187102 515 5,904 SH   SOLE   0 0 5,904
INTEL CORP COM 458140100 4,771 96,265 SH   SOLE   0 0 96,265
ISHARES TR MSCI EMG MKT ETF 464287234 2,001 44,310 SH   SOLE   0 0 44,310
ISHARES TR MSCI EAFE ETF 464287465 3,367 45,750 SH   SOLE   0 0 45,750
ISHARES TR 3 7 YR TREAS BD 464288661 600 4,920 SH   SOLE   0 0 4,920
ISHARES TR RUS 2000 VAL ETF 464287630 277 1,714 SH   SOLE   0 0 1,714
ISHARES TR MBS ETF 464288588 17,996 176,658 SH   SOLE   0 0 176,658
ISHARES TR SHORT TREAS BD 464288679 906 8,219 SH   SOLE   0 0 8,219
ISHARES TR 1 3 YR TREAS BD 464287457 271 3,246 SH   SOLE   0 0 3,246
ITURAN LOCATION AND CONTROL SHS M6158M104 230 10,000 SH   SOLE   0 0 10,000
JOHNSON & JOHNSON COM 478160104 3,275 18,478 SH   SOLE   0 0 18,478
JPMORGAN CHASE & CO ALERIAN ML ETN 46625H365 562 26,900 SH   SOLE   0 0 26,900
JPMORGAN CHASE & CO COM 46625H100 556 4,080 SH   SOLE   0 0 4,080
KEYCORP COM 493267108 924 41,300 SH   SOLE   0 0 41,300
KIMBELL RTY PARTNERS LP COM 49435R102 170 10,478 SH   SOLE   0 0 10,478
KINDER MORGAN INC DEL COM 49456B101 8,045 425,436 SH   SOLE   0 0 425,436
KRAFT HEINZ CO COM 500754106 1,592 40,413 SH   SOLE   0 0 40,413
LKQ CORP COM 501889208 336 7,400 SH   SOLE   0 0 7,400
M & T BK CORP COM 55261F104 2,338 13,793 SH   SOLE   0 0 13,793
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 4,828 98,383 SH   SOLE   0 0 98,383
MARATHON PETE CORP COM 56585A102 1,247 14,589 SH   SOLE   0 0 14,589
MARKEL CORP COM 570535104 2,082 1,411 SH   SOLE   0 0 1,411
MERCK & CO. INC COM 58933Y105 426 5,191 SH   SOLE   0 0 5,191
MICROSOFT CORP COM 594918104 7,321 23,745 SH   SOLE   0 0 23,745
MPLX LP COM UNIT REP LTD 55336V100 1,270 38,266 SH   SOLE   0 0 38,266
NETFLIX INC COM 64110L106 1,166 3,114 SH   SOLE   0 0 3,114
PARTY CITY HOLDCO INC COM 702149105 107 30,000 SH   SOLE   0 0 30,000
PAYPAL HLDGS INC COM 70450Y103 836 7,227 SH   SOLE   0 0 7,227
PEPSICO INC COM 713448108 440 2,631 SH   SOLE   0 0 2,631
PFIZER INC COM 717081103 282 5,442 SH   SOLE   0 0 5,442
PIONEER NAT RES CO COM 723787107 429 1,717 SH   SOLE   0 0 1,717
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 681 63,288 SH   SOLE   0 0 63,288
PLAINS GP HLDGS L P LTD PARTNR INT A 72651A207 2,601 225,163 SH   SOLE   0 0 225,163
PROGRESSIVE CORP COM 743315103 3,330 29,217 SH   SOLE   0 0 29,217
QUALCOMM INC COM 747525103 382 2,500 SH   SOLE   0 0 2,500
QURATE RETAIL INC COM SER A 74915M100 519 109,100 SH   SOLE   0 0 109,100
REDHILL BIOPHARMA LTD SPONSORED ADS 757468103 110 43,532 SH   SOLE   0 0 43,532
ROKU INC COM CL A 77543R102 664 5,300 SH   SOLE   0 0 5,300
S&P GLOBAL INC COM 78409V104 374 913 SH   SOLE   0 0 913
SABRE CORP COM 78573M104 4,593 401,821 SH   SOLE   0 0 401,821
SBA COMMUNICATIONS CORP NEW CL A 78410G104 963 2,800 SH   SOLE   0 0 2,800
SCHWAB CHARLES CORP COM 808513105 205 2,432 SH   SOLE   0 0 2,432
SPDR GOLD TR GOLD SHS 78463V107 3,501 19,381 SH   SOLE   0 0 19,381
SPDR S&P 500 ETF TR TR UNIT 78462F103 7,226 16,000 SH   SOLE   0 0 16,000
SUNCOR ENERGY INC NEW COM 867224107 365 11,200 SH   SOLE   0 0 11,200
TYSON FOODS INC CL A 902494103 609 6,800 SH   SOLE   0 0 6,800
UNILEVER PLC SPON ADR NEW 904767704 217 4,767 SH   SOLE   0 0 4,767
UNITED STATES STL CORP NEW COM 912909108 1,887 50,005 SH   SOLE   0 0 50,005
UROGEN PHARMA LTD COM M96088105 735 84,331 SH   SOLE   0 0 84,331
VANGUARD BD INDEX FDS SHORT TRM BOND 921937827 2,848 36,566 SH   SOLE   0 0 36,566
VANGUARD INTL EQUITY INDEX F TT WRLD ST ETF 922042742 227 2,237 SH   SOLE   0 0 2,237
VANGUARD WHITEHALL FDS HIGH DIV YLD 921946406 15,329 136,562 SH   SOLE   0 0 136,562
VANGUARD WHITEHALL FDS INTL HIGH ETF 921946794 274 4,053 SH   SOLE   0 0 4,053
VERISK ANALYTICS INC COM 92345Y106 1,594 7,425 SH   SOLE   0 0 7,425
VISA INC COM CL A 92826C839 684 3,084 SH   SOLE   0 0 3,084
WALMART INC COM 931142103 4,273 28,694 SH   SOLE   0 0 28,694
WELLS FARGO CO NEW COM 949746101 523 10,798 SH   SOLE   0 0 10,798
WILLIAMS COS INC COM 969457100 988 29,566 SH   SOLE   0 0 29,566