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 970 12,900 SH   SOLE 0 12,900 0 0
AES CORP COM 00130H105 34,571 2,469,374 SH   SOLE 0 2,469,374 0 0
AMAZON COM INC COM 023135106 27,367 13,663 SH   SOLE 0 13,663 0 0
AMERICAN INTL GROUP INC *W EXP 01/19/21 026874156 263 18,000 SH   SOLE 0 18,000 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 3,645 68,470 SH   SOLE 0 68,470 0 0
AMERICAN TOWER CORP CL A 03027X100 90,284 621,360 SH   SOLE 0 621,360 0 0
ANTARES PHARMA INC COM 036642106 980 291,597 SH   SOLE 0 291,597 0 0
APPLE INC COM 037833100 19,543 86,572 SH   SOLE 0 86,572 0 0
ATOMERA INC COM 04965B100 502 83,884 SH   SOLE 0 83,884 0 0
AXOS FINL INC COM 05465C100 1,119 32,540 SH   SOLE 0 32,540 0 0
BANK AMER CORP COM 060505104 34,257 1,162,838 SH   SOLE 0 1,162,838 0 0
BANK AMER CORP *W EXP 01/16/19 060505146 178 10,000 SH   SOLE 0 10,000 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 1,920 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 23,692 110,654 SH   SOLE 0 110,654 0 0
B O K FINL CORP COM NEW 05561Q201 13,398 137,730 SH   SOLE 0 137,730 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 6,420 160,987 SH   SOLE 0 160,987 0 0
CARMAX INC COM 143130102 51,861 694,533 SH   SOLE 0 694,533 0 0
CEDAR FAIR LP DEPOSITRY UNIT 150185106 4,436 85,177 SH   SOLE 0 85,177 0 0
CINCINNATI BELL INC NEW PFD CV DEP1/20 171871403 740 15,150 SH   SOLE 0 15,150 0 0
CITIGROUP INC COM NEW 172967424 13,405 186,856 SH   SOLE 0 186,856 0 0
CITY OFFICE REIT INC COM 178587101 1,895 150,180 SH   SOLE 0 150,180 0 0
COLONY CAP INC NEW CL A COM 19626G108 2,884 473,554 SH   SOLE 0 473,554 0 0
COPART INC COM 217204106 14,131 274,220 SH   SOLE 0 274,220 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 469 4,210 SH   SOLE 0 4,210 0 0
CROWN HOLDINGS INC COM 228368106 21,304 443,830 SH   SOLE 0 443,830 0 0
CYTOSORBENTS CORP COM NEW 23283X206 545 42,255 SH   SOLE 0 42,255 0 0
DENNYS CORP COM 24869P104 61,814 4,199,338 SH   SOLE 0 4,199,338 0 0
DINE BRANDS GLOBAL INC COM 254423106 2,062 25,355 SH   SOLE 0 25,355 0 0
DOLLAR TREE INC COM 256746108 42,434 520,340 SH   SOLE 0 520,340 0 0
ENERGY RECOVERY INC COM 29270J100 4,575 511,196 SH   SOLE 0 511,196 0 0
ENERGY TRANSFER EQUITY LP COM UT LTD PTN 29273V100 4,009 229,982 SH   SOLE 0 229,982 0 0
ENERGY TRANSFER PARTNERS LP UNIT LTD PRT INT 29278N103 4,364 196,036 SH   SOLE 0 196,036 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 3,874 134,838 SH   SOLE 0 134,838 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 2,767 87,012 SH   SOLE 0 87,012 0 0
EQUINIX COM NEW 29444U700 1,434 3,313 SH   SOLE 0 3,313 0 0
EXXON MOBIL CORP COM 30231G102 303 3,564 SH   SOLE 0 3,564 0 0
FAUQUIER BANKSHARES INC VA COM 312059108 405 16,000 SH   SOLE 0 16,000 0 0
FIVE BELOW INC COM 33829M101 11,218 86,253 SH   SOLE 0 86,253 0 0
GENERAL ELECTRIC CO COM 369604103 149 13,177 SH   SOLE 0 13,177 0 0
GLADSTONE COML CORP COM 376536108 1,975 103,124 SH   SOLE 0 103,124 0 0
SCHEIN HENRY INC COM 806407102 23,733 279,112 SH   SOLE 0 279,112 0 0
INTERNAP CORP COM PAR 45885A409 13,774 1,090,544 SH   SOLE 0 1,090,544 0 0
JPMORGAN CHASE & CO COM 46625H100 206 1,830 SH   SOLE 0 1,830 0 0
KINDER MORGAN INC COM 49456B101 14,494 817,464 SH   SOLE 0 817,464 0 0
LANDMARK INFRASTRUCTURE LP COM UNIT LTD 51508J108 997 71,952 SH   SOLE 0 71,952 0 0
MACQUARIE INFRASTR CO LLC MEMBERSHIP INT 55608B105 7,766 168,344 SH   SOLE 0 168,344 0 0
MARKEL CORP COM 570535104 79,057 66,518 SH   SOLE 0 66,518 0 0
MASTERCARD INC CL A 57636Q104 5,204 23,377 SH   SOLE 0 23,377 0 0
MICROSOFT CORP COM 594918104 71,230 622,806 SH   SOLE 0 622,806 0 0
MPLX LP COM UNIT REP LTD 55336V100 7,824 225,609 SH   SOLE 0 225,609 0 0
OPTIMIZERX CORP COM NEW 68401U204 1,213 67,400 SH   SOLE 0 67,400 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 26,488 76,264 SH   SOLE 0 76,264 0 0
PACIRA PHARMACEUTICALS INC COM 695127100 987 20,080 SH   SOLE 0 20,080 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 1,838 92,498 SH   SOLE 0 92,498 0 0
PIONEER NAT RES CO COM 723787107 49,748 285,596 SH   SOLE 0 285,596 0 0
SBA COMMUNICATIONS CORP COM 78410G104 1,065 6,628 SH   SOLE 0 6,628 0 0
SIX FLAGS ENTMT CORP NEW COM 83001A102 611 8,745 SH   SOLE 0 8,745 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 335 2,969 SH   SOLE 0 2,969 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 371 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 1,470 68,316 SH   SOLE 0 68,316 0 0
TRUPANION INC COM 898202106 11,102 310,719 SH   SOLE 0 310,719 0 0
TWENTY FIRST CENTY FOX INC CL A 90130A101 582 12,556 SH   SOLE 0 12,556 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 30,883 261,942 SH   SOLE 0 261,942 0 0
VISA INC COM CL A 92826C839 4,752 31,662 SH   SOLE 0 31,662 0 0
WELLS FARGO & CO NEW COM 949746101 1,451 27,604 SH   SOLE 0 27,604 0 0
ZAYO GROUP HLDGS INC COM 98919V105 40,702 1,172,293 SH   SOLE 0 1,172,293 0 0