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 43,406 2,400,748 SH   SOLE 0 2,400,748 0 0
AMAZON COM INC COM 023135106 24,387 13,695 SH   SOLE 0 13,695 0 0
AMERICAN INTL GROUP INC *W EXP 01/19/21 026874156 118 21,000 SH   SOLE 0 21,000 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 2,524 58,625 SH   SOLE 0 58,625 0 0
AMERICAN TOWER CORP CL A 03027X100 121,028 614,169 SH   SOLE 0 614,169 0 0
ANTARES PHARMA INC COM 036642106 874 288,597 SH   SOLE 0 288,597 0 0
APPLE INC COM 037833100 17,128 90,170 SH   SOLE 0 90,170 0 0
ATOMERA INC COM 04965B100 385 145,390 SH   SOLE 0 145,390 0 0
AXOS FINL INC COM 05465C100 942 32,540 SH   SOLE 0 32,540 0 0
BANK AMER CORP COM 060505104 36,165 1,310,785 SH   SOLE 0 1,310,785 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 1,807 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 23,184 115,406 SH   SOLE 0 115,406 0 0
B O K FINL CORP COM NEW 05561Q201 11,127 136,438 SH   SOLE 0 136,438 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 6,779 161,894 SH   SOLE 0 161,894 0 0
BROOKFIELD PROPERTY REIT INC CL A 11282X103 588 28,680 SH   SOLE 0 28,680 0 0
CARMAX INC COM 143130102 48,253 691,309 SH   SOLE 0 691,309 0 0
CEDAR FAIR LP DEPOSITRY UNIT 150185106 4,536 86,209 SH   SOLE 0 86,209 0 0
CINCINNATI BELL INC NEW PFD CV DEP1/20 171871403 1,140 29,240 SH   SOLE 0 29,240 0 0
CITIGROUP INC COM NEW 172967424 9,544 153,395 SH   SOLE 0 153,395 0 0
CITY OFFICE REIT INC COM 178587101 1,726 152,575 SH   SOLE 0 152,575 0 0
COLONY CAP INC NEW CL A COM 19626G108 870 163,500 SH   SOLE 0 163,500 0 0
COPART INC COM 217204106 16,463 271,707 SH   SOLE 0 271,707 0 0
COVETRUS INC COM 22304C100 16,884 530,120 SH   SOLE 0 530,120 0 0
CROWN HOLDINGS INC COM 228368106 22,814 418,072 SH   SOLE 0 418,072 0 0
CYTOSORBENTS CORP COM NEW 23283X206 660 87,240 SH   SOLE 0 87,240 0 0
DENNYS CORP COM 24869P104 73,035 3,980,134 SH   SOLE 0 3,980,134 0 0
DINE BRANDS GLOBAL INC COM 254423106 2,481 27,175 SH   SOLE 0 27,175 0 0
DOLLAR TREE INC COM 256746108 49,382 470,129 SH   SOLE 0 470,129 0 0
ENERGY RECOVERY INC COM 29270J100 7,103 813,585 SH   SOLE 0 813,585 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 7,445 484,358 SH   SOLE 0 484,358 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 3,924 134,838 SH   SOLE 0 134,838 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 2,867 88,892 SH   SOLE 0 88,892 0 0
EQUINIX COM NEW 29444U700 1,501 3,313 SH   SOLE 0 3,313 0 0
EXXON MOBIL CORP COM 30231G102 258 3,190 SH   SOLE 0 3,190 0 0
FAUQUIER BANKSHARES INC VA COM 312059108 330 16,000 SH   SOLE 0 16,000 0 0
FIVE BELOW INC COM 33829M101 259 2,085 SH   SOLE 0 2,085 0 0
GENERAL ELECTRIC CO COM 369604103 127 12,750 SH   SOLE 0 12,750 0 0
GLADSTONE COML CORP COM 376536108 2,101 101,152 SH   SOLE 0 101,152 0 0
SCHEIN HENRY INC COM 806407102 26,947 448,297 SH   SOLE 0 448,297 0 0
INTERNAP CORP COM PAR 45885A409 6,371 1,284,549 SH   SOLE 0 1,284,549 0 0
KINDER MORGAN INC COM 49456B101 15,603 779,761 SH   SOLE 0 779,761 0 0
LANDMARK INFRASTRUCTURE LP COM UNIT LTD 51508J108 1,250 73,712 SH   SOLE 0 73,712 0 0
MACQUARIE INFRASTR CO LLC MEMBERSHIP INT 55608B105 6,646 161,240 SH   SOLE 0 161,240 0 0
MARKEL CORP COM 570535104 68,216 68,473 SH   SOLE 0 68,473 0 0
MASTERCARD INC CL A 57636Q104 5,342 22,689 SH   SOLE 0 22,689 0 0
MICROSOFT CORP COM 594918104 71,538 606,565 SH   SOLE 0 606,565 0 0
MPLX LP COM UNIT REP LTD 55336V100 7,417 225,520 SH   SOLE 0 225,520 0 0
NEW RESIDENTIAL INVT CORP COM NEW 64828T201 995 58,825 SH   SOLE 0 58,825 0 0
NOVAVAX INC COM 670002104 120 218,700 SH   SOLE 0 218,700 0 0
OPTIMIZERX CORP COM NEW 68401U204 1,493 117,400 SH   SOLE 0 117,400 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 29,164 75,107 SH   SOLE 0 75,107 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 2,069 94,038 SH   SOLE 0 94,038 0 0
PIER 1 IMPORTS INC COM 720279108 8 10,000 SH   SOLE 0 10,000 0 0
PIONEER NAT RES CO COM 723787107 43,165 283,460 SH   SOLE 0 283,460 0 0
PROCTER AND GAMBLE CO COM 742718109 208 2,000 SH   SOLE 0 2,000 0 0
SBA COMMUNICATIONS CORP COM 78410G104 1,277 6,398 SH   SOLE 0 6,398 0 0
SIX FLAGS ENTMT CORP NEW COM 83001A102 432 8,745 SH   SOLE 0 8,745 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 362 2,969 SH   SOLE 0 2,969 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 406 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 1,558 69,689 SH   SOLE 0 69,689 0 0
STORE CAP CORP COM 862121100 335 9,990 SH   SOLE 0 9,990 0 0
KRAFT HEINZ CO COM 500754106 309 9,465 SH   SOLE 0 9,465 0 0
TRUPANION INC COM 898202106 10,402 317,722 SH   SOLE 0 317,722 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 36,612 239,532 SH   SOLE 0 239,532 0 0
VISA INC COM CL A 92826C839 4,895 31,341 SH   SOLE 0 31,341 0 0
WELLS FARGO & CO NEW COM 949746101 1,324 27,404 SH   SOLE 0 27,404 0 0
ZAYO GROUP HLDGS INC COM 98919V105 34,331 1,207,993 SH   SOLE 0 1,207,993 0 0