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
2U INC COM 90214J101 641 12,900 SH   SOLE 0 12,900 0 0
AES CORP COM 00130H105 35,128 2,429,299 SH   SOLE 0 2,429,299 0 0
AMAZON COM INC COM 023135106 20,586 13,706 SH   SOLE 0 13,706 0 0
AMERICAN INTL GROUP INC *W EXP 01/19/21 026874156 114 21,000 SH   SOLE 0 21,000 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 2,504 63,530 SH   SOLE 0 63,530 0 0
AMERICAN TOWER CORP CL A 03027X100 97,264 614,853 SH   SOLE 0 614,853 0 0
ANTARES PHARMA INC COM 036642106 789 290,097 SH   SOLE 0 290,097 0 0
APPLE INC COM 037833100 13,843 87,760 SH   SOLE 0 87,760 0 0
ATOMERA INC COM 04965B100 334 116,410 SH   SOLE 0 116,410 0 0
AXOS FINL INC COM 05465C100 819 32,540 SH   SOLE 0 32,540 0 0
BANK AMER CORP COM 060505104 32,998 1,339,185 SH   SOLE 0 1,339,185 0 0
BANK AMER CORP *W EXP 01/16/19 060505146 128 10,000 SH   SOLE 0 10,000 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 1,836 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 22,770 111,520 SH   SOLE 0 111,520 0 0
B O K FINL CORP COM NEW 05561Q201 10,069 137,308 SH   SOLE 0 137,308 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 5,553 160,809 SH   SOLE 0 160,809 0 0
BROOKFIELD PROPERTY REIT INC CL A 11282X103 424 26,345 SH   SOLE 0 26,345 0 0
CARMAX INC COM 143130102 43,385 691,621 SH   SOLE 0 691,621 0 0
CEDAR FAIR LP DEPOSITRY UNIT 150185106 4,034 85,277 SH   SOLE 0 85,277 0 0
CINCINNATI BELL INC NEW PFD CV DEP1/20 171871403 814 29,240 SH   SOLE 0 29,240 0 0
CITIGROUP INC COM NEW 172967424 5,838 112,148 SH   SOLE 0 112,148 0 0
CITY OFFICE REIT INC COM 178587101 1,541 150,365 SH   SOLE 0 150,365 0 0
COLONY CAP INC NEW CL A COM 19626G108 1,398 298,822 SH   SOLE 0 298,822 0 0
COPART INC COM 217204106 12,942 270,872 SH   SOLE 0 270,872 0 0
CROWN HOLDINGS INC COM 228368106 18,097 435,342 SH   SOLE 0 435,342 0 0
CYTOSORBENTS CORP COM NEW 23283X206 617 76,390 SH   SOLE 0 76,390 0 0
DENNYS CORP COM 24869P104 66,131 4,079,632 SH   SOLE 0 4,079,632 0 0
DINE BRANDS GLOBAL INC COM 254423106 1,776 26,380 SH   SOLE 0 26,380 0 0
DOLLAR TREE INC COM 256746108 47,238 523,008 SH   SOLE 0 523,008 0 0
ENERGY RECOVERY INC COM 29270J100 5,371 798,095 SH   SOLE 0 798,095 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 6,412 485,425 SH   SOLE 0 485,425 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 3,316 134,838 SH   SOLE 0 134,838 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 2,415 87,012 SH   SOLE 0 87,012 0 0
EQUINIX COM NEW 29444U700 1,168 3,313 SH   SOLE 0 3,313 0 0
FAUQUIER BANKSHARES INC VA COM 312059108 307 16,000 SH   SOLE 0 16,000 0 0
FIVE BELOW INC COM 33829M101 234 2,290 SH   SOLE 0 2,290 0 0
GENERAL ELECTRIC CO COM 369604103 121 16,050 SH   SOLE 0 16,050 0 0
GLADSTONE COML CORP COM 376536108 1,813 101,152 SH   SOLE 0 101,152 0 0
SCHEIN HENRY INC COM 806407102 26,013 331,286 SH   SOLE 0 331,286 0 0
INTERNAP CORP COM PAR 45885A409 5,416 1,305,017 SH   SOLE 0 1,305,017 0 0
KINDER MORGAN INC COM 49456B101 12,522 814,186 SH   SOLE 0 814,186 0 0
LANDMARK INFRASTRUCTURE LP COM UNIT LTD 51508J108 826 71,672 SH   SOLE 0 71,672 0 0
MACQUARIE INFRASTR CO LLC MEMBERSHIP INT 55608B105 5,371 146,898 SH   SOLE 0 146,898 0 0
MARKEL CORP COM 570535104 70,165 67,593 SH   SOLE 0 67,593 0 0
MASTERCARD INC CL A 57636Q104 4,269 22,629 SH   SOLE 0 22,629 0 0
MICROSOFT CORP COM 594918104 62,151 611,904 SH   SOLE 0 611,904 0 0
MPLX LP COM UNIT REP LTD 55336V100 6,844 225,874 SH   SOLE 0 225,874 0 0
NEW RESIDENTIAL INVT CORP COM NEW 64828T201 623 43,850 SH   SOLE 0 43,850 0 0
OPTIMIZERX CORP COM NEW 68401U204 1,288 117,400 SH   SOLE 0 117,400 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 25,964 75,404 SH   SOLE 0 75,404 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 1,722 92,498 SH   SOLE 0 92,498 0 0
PIONEER NAT RES CO COM 723787107 37,166 282,586 SH   SOLE 0 282,586 0 0
SBA COMMUNICATIONS CORP COM 78410G104 1,073 6,628 SH   SOLE 0 6,628 0 0
SIX FLAGS ENTMT CORP NEW COM 83001A102 486 8,745 SH   SOLE 0 8,745 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 360 2,969 SH   SOLE 0 2,969 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 401 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 1,347 68,316 SH   SOLE 0 68,316 0 0
STORE CAP CORP COM 862121100 270 9,525 SH   SOLE 0 9,525 0 0
TRUPANION INC COM 898202106 7,515 295,164 SH   SOLE 0 295,164 0 0
TWENTY FIRST CENTY FOX INC CL A 90130A101 604 12,556 SH   SOLE 0 12,556 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 24,534 262,203 SH   SOLE 0 262,203 0 0
VISA INC COM CL A 92826C839 4,116 31,199 SH   SOLE 0 31,199 0 0
WELLS FARGO & CO NEW COM 949746101 1,272 27,604 SH   SOLE 0 27,604 0 0
ZAYO GROUP HLDGS INC COM 98919V105 27,703 1,212,899 SH   SOLE 0 1,212,899 0 0