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
AES CORP COM 00130H105 30,152 2,217,050 SH   SOLE 0 2,217,050 0 0
AMAZON COM INC COM 023135106 30,613 15,701 SH   SOLE 0 15,701 0 0
AMERICAN INTL GROUP INC *W EXP 01/19/21 026874156 19 23,230 SH   SOLE 0 23,230 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 1,511 62,320 SH   SOLE 0 62,320 0 0
AMERICAN TOWER CORP CL A 03027X100 131,510 603,950 SH   SOLE 0 603,950 0 0
ANTARES PHARMA INC COM 036642106 670 283,797 SH   SOLE 0 283,797 0 0
APPLE INC COM 037833100 24,055 94,596 SH   SOLE 0 94,596 0 0
ATOMERA INC COM 04965B100 840 239,996 SH   SOLE 0 239,996 0 0
AXOS FINL INC COM 05465C100 590 32,540 SH   SOLE 0 32,540 0 0
BANK AMER CORP COM 060505104 21,361 1,006,158 SH   SOLE 0 1,006,158 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 1,632 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 27,059 148,002 SH   SOLE 0 148,002 0 0
B O K FINL CORP COM NEW 05561Q201 5,778 135,764 SH   SOLE 0 135,764 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 5,541 154,051 SH   SOLE 0 154,051 0 0
BROOKFIELD PROPERTY REIT INC CL A 11282X103 341 40,135 SH   SOLE 0 40,135 0 0
CABLE ONE INC COM 12685J105 230 140 SH   SOLE 0 140 0 0
CARMAX INC COM 143130102 36,084 670,335 SH   SOLE 0 670,335 0 0
CEDAR FAIR LP DEPOSITRY UNIT 150185106 1,364 74,389 SH   SOLE 0 74,389 0 0
CENTURYLINK INC COM 156700106 495 52,355 SH   SOLE 0 52,355 0 0
CITIGROUP INC COM NEW 172967424 11,993 284,723 SH   SOLE 0 284,723 0 0
CITY OFFICE REIT INC COM 178587101 828 114,484 SH   SOLE 0 114,484 0 0
COLONY CAP INC NEW CL A COM 19626G108 350 200,000 SH   SOLE 0 200,000 0 0
COPART INC COM 217204106 23,377 341,172 SH   SOLE 0 341,172 0 0
COVETRUS INC COM 22304C100 1,227 150,759 SH   SOLE 0 150,759 0 0
CROWN HOLDINGS INC COM 228368106 3,296 56,787 SH   SOLE 0 56,787 0 0
CYTOSORBENTS CORP COM NEW 23283X206 1,164 150,600 SH   SOLE 0 150,600 0 0
DENNYS CORP COM 24869P104 22,543 2,935,330 SH   SOLE 0 2,935,330 0 0
DOLLAR TREE INC COM 256746108 35,607 484,650 SH   SOLE 0 484,650 0 0
ENERGY RECOVERY INC COM 29270J100 8,576 1,152,722 SH   SOLE 0 1,152,722 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 2,283 496,264 SH   SOLE 0 496,264 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 1,936 135,403 SH   SOLE 0 135,403 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 2,096 78,444 SH   SOLE 0 78,444 0 0
EQUINIX COM NEW 29444U700 2,071 3,316 SH   SOLE 0 3,316 0 0
EXTENDED STAY AMER INC UNIT 302249200 513 70,185 SH   SOLE 0 70,185 0 0
FAUQUIER BANKSHARES INC VA COM 312059108 220 16,000 SH   SOLE 0 16,000 0 0
GENERAL ELECTRIC CO COM 369604103 98 12,350 SH   SOLE 0 12,350 0 0
GLADSTONE COML CORP COM 376536108 1,362 94,877 SH   SOLE 0 94,877 0 0
GOOSEHEAD INS INC COM CL A 38267D109 2,282 51,130 SH   SOLE 0 51,130 0 0
SCHEIN HENRY INC COM 806407102 4,009 79,360 SH   SOLE 0 79,360 0 0
JPMORGAN CHASE & CO COM 46625H100 291 3,228 SH   SOLE 0 3,228 0 0
KINDER MORGAN INC COM 49456B101 2,638 189,538 SH   SOLE 0 189,538 0 0
LANDMARK INFRASTRUCTURE LP COM UNIT LTD 51508J108 784 74,202 SH   SOLE 0 74,202 0 0
MACQUARIE INFRASTR CO LLC MEMBERSHIP INT 55608B105 4,057 160,661 SH   SOLE 0 160,661 0 0
MARKEL CORP COM 570535104 66,321 71,475 SH   SOLE 0 71,475 0 0
MASTERCARD INC CL A 57636Q104 18,490 76,544 SH   SOLE 0 76,544 0 0
MICROSOFT CORP COM 594918104 92,377 585,741 SH   SOLE 0 585,741 0 0
MPLX LP COM UNIT REP LTD 55336V100 2,771 238,496 SH   SOLE 0 238,496 0 0
NEW RESIDENTIAL INVT CORP COM NEW 64828T201 571 113,925 SH   SOLE 0 113,925 0 0
NORTHERN OIL & GAS INC NEV COM 665531109 13 20,000 SH   SOLE 0 20,000 0 0
NOVAVAX INC COM 670002104 1,446 106,465 SH   SOLE 0 106,465 0 0
OPTIMIZERX CORP COM NEW 68401U204 6,412 707,754 SH   SOLE 0 707,754 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 22,842 75,873 SH   SOLE 0 75,873 0 0
PIONEER NAT RES CO COM 723787107 16,241 231,522 SH   SOLE 0 231,522 0 0
PROCTER AND GAMBLE CO COM 742718109 244 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP COM 78410G104 1,727 6,398 SH   SOLE 0 6,398 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 440 2,969 SH   SOLE 0 2,969 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 510 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 442 43,088 SH   SOLE 0 43,088 0 0
STORE CAP CORP COM 862121100 284 15,680 SH   SOLE 0 15,680 0 0
TRUPANION INC COM 898202106 10,237 393,275 SH   SOLE 0 393,275 0 0
UNITI GROUP INC COM 91325V108 121 20,075 SH   SOLE 0 20,075 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 28,764 218,271 SH   SOLE 0 218,271 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 457 1,930 SH   SOLE 0 1,930 0 0
VISA INC COM CL A 92826C839 13,170 81,743 SH   SOLE 0 81,743 0 0
DISNEY WALT CO COM DISNEY 254687106 234 2,420 SH   SOLE 0 2,420 0 0
WELLS FARGO & CO NEW COM 949746101 618 21,544 SH   SOLE 0 21,544 0 0