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
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 1,127 28,000 SH   SOLE 0 28,000 0 0
AES CORP COM 00130H105 57,623 2,149,324 SH   SOLE 0 2,149,324 0 0
AMAZON COM INC COM 023135106 46,912 15,162 SH   SOLE 0 15,162 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 989 21,411 SH   SOLE 0 21,411 0 0
AMERICAN TOWER CORP CL A 03027X100 146,156 611,378 SH   SOLE 0 611,378 0 0
ANTARES PHARMA INC COM 036642106 1,238 301,297 SH   SOLE 0 301,297 0 0
APPLE INC COM 037833100 40,867 334,565 SH   SOLE 0 334,565 0 0
ATOMERA INC COM 04965B100 5,881 240,026 SH   SOLE 0 240,026 0 0
BANK AMER CORP COM 060505104 35,560 919,091 SH   SOLE 0 919,091 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 2,314 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 40,771 159,594 SH   SOLE 0 159,594 0 0
B O K FINL CORP COM NEW 05561Q201 12,008 134,440 SH   SOLE 0 134,440 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 556 12,500 SH   SOLE 0 12,500 0 0
BROOKFIELD INFRASTRUCTURE CO COM SB VTG SHS A 11275Q107 691 9,049 SH   SOLE 0 9,049 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 6,630 124,507 SH   SOLE 0 124,507 0 0
CABLE ONE INC COM 12685J105 256 140 SH   SOLE 0 140 0 0
CARMAX INC COM 143130102 57,775 435,513 SH   SOLE 0 435,513 0 0
CITIGROUP INC COM NEW 172967424 3,171 43,588 SH   SOLE 0 43,588 0 0
CITY OFFICE REIT INC COM 178587101 671 63,200 SH   SOLE 0 63,200 0 0
COLONY CAP INC NEW CL A COM 19626G108 23,116 3,567,242 SH   SOLE 0 3,567,242 0 0
COLONY CR REAL ESTATE INC COM CL A 19625T101 1,292 151,600 SH   SOLE 0 151,600 0 0
COPART INC COM 217204106 43,770 402,999 SH   SOLE 0 402,999 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 208 1,210 SH   SOLE 0 1,210 0 0
CYTOSORBENTS CORP COM NEW 23283X206 3,115 358,870 SH   SOLE 0 358,870 0 0
DENNYS CORP COM 24869P104 1,695 93,581 SH   SOLE 0 93,581 0 0
DOLLAR TREE INC COM 256746108 57,156 499,352 SH   SOLE 0 499,352 0 0
DUCK CREEK TECHNOLOGIES INC SHS 264120106 9,315 206,362 SH   SOLE 0 206,362 0 0
ENERGY RECOVERY INC COM 29270J100 29,011 1,581,836 SH   SOLE 0 1,581,836 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 3,526 459,075 SH   SOLE 0 459,075 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 2,788 126,608 SH   SOLE 0 126,608 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 1,208 25,000 SH   SOLE 0 25,000 0 0
EQUINIX COM NEW 29444U700 2,249 3,309 SH   SOLE 0 3,309 0 0
EXXON MOBIL CORP COM 30231G102 291 5,205 SH   SOLE 0 5,205 0 0
GENERAL ELECTRIC CO COM 369604103 162 12,350 SH   SOLE 0 12,350 0 0
GLADSTONE COML CORP COM 376536108 1,818 92,950 SH   SOLE 0 92,950 0 0
IRON MTN INC NEW COM 46284V101 1,448 39,130 SH   SOLE 0 39,130 0 0
JPMORGAN CHASE & CO COM 46625H100 445 2,924 SH   SOLE 0 2,924 0 0
KINDER MORGAN INC COM 49456B101 2,384 143,165 SH   SOLE 0 143,165 0 0
LOCKHEED MARTIN CORP COM 539830109 47,252 127,880 SH   SOLE 0 127,880 0 0
LUNA INNOVATIONS COM 550351100 1,310 124,410 SH   SOLE 0 124,410 0 0
MACQUARIE INFRASTR CO LLC MEMBERSHIP INT 55608B105 2,215 69,635 SH   SOLE 0 69,635 0 0
MARKEL CORP COM 570535104 96,838 84,974 SH   SOLE 0 84,974 0 0
MASTERCARD INC CL A 57636Q104 31,290 87,880 SH   SOLE 0 87,880 0 0
MICROSOFT CORP COM 594918104 130,023 551,481 SH   SOLE 0 551,481 0 0
MOODY'S CORP COM 615369105 285 955 SH   SOLE 0 955 0 0
MPLX LP COM UNIT REP LTD 55336V100 5,898 230,132 SH   SOLE 0 230,132 0 0
NEW RESIDENTIAL INVT CORP COM NEW 64828T201 315 28,010 SH   SOLE 0 28,010 0 0
NEWTEK BUSINESS CVCS CORP COM NEW 652526203 1,015 38,000 SH   SOLE 0 38,000 0 0
NOVAVAX INC COM 670002104 8,996 49,614 SH   SOLE 0 49,614 0 0
OMNICOM GROUP INC COM 681919106 318 4,288 SH   SOLE 0 4,288 0 0
OPTIMIZERX CORP COM NEW 68401U204 31,132 638,596 SH   SOLE 0 638,596 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 45,936 90,559 SH   SOLE 0 90,559 0 0
PNC FINL SVCS GROUP INC COM 693475105 222 1,266 SH   SOLE 0 1,266 0 0
PROCTER AND GAMBLE CO COM 742718109 301 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP COM 78410G104 1,776 6,398 SH   SOLE 0 6,398 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 283 1,769 SH   SOLE 0 1,769 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 521 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 1,863 75,320 SH   SOLE 0 75,320 0 0
STORE CAP CORP COM 862121100 219 6,528 SH   SOLE 0 6,528 0 0
KRAFT HEINZ CO COM 500754106 341 8,520 SH   SOLE 0 8,520 0 0
TRITERRAS INC *W EXP 11/10/2025 G9103H110 17 10,000 SH   SOLE 0 10,000 0 0
TRUPANION INC COM 898202106 14,800 194,199 SH   SOLE 0 194,199 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 49,846 210,525 SH   SOLE 0 210,525 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 935 2,566 SH   SOLE 0 2,566 0 0
VISA INC COM CL A 92826C839 17,446 82,399 SH   SOLE 0 82,399 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 18,379 334,771 SH   SOLE 0 334,771 0 0
DISNEY WALT CO COM DISNEY 254687106 621 3,368 SH   SOLE 0 3,368 0 0