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
ABBVIE INC COM 00287Y109 224 1,462 SH   SOLE 0 1,462 0 0
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 438 54,100 SH   SOLE 0 54,100 0 0
ADOBE SYSTEMS INCORPORATED COM 00724F101 4,499 12,290 SH   SOLE 0 12,290 0 0
AES CORP COM 00130H105 39,182 1,864,911 SH   SOLE 0 1,864,911 0 0
AMAZON COM INC COM 023135106 48,746 458,962 SH   SOLE 0 458,962 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 1,095 21,411 SH   SOLE 0 21,411 0 0
AMERICAN TOWER CORP CL A 03027X100 153,783 601,678 SH   SOLE 0 601,678 0 0
APPLE INC COM 037833100 44,272 323,816 SH   SOLE 0 323,816 0 0
ATOMERA INC COM 04965B100 2,514 267,981 SH   SOLE 0 267,981 0 0
BANK AMER CORP COM 060505104 26,212 842,027 SH   SOLE 0 842,027 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 2,454 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 42,041 153,984 SH   SOLE 0 153,984 0 0
B O K FINL CORP COM NEW 05561Q201 9,986 132,120 SH   SOLE 0 132,120 0 0
BRIGHTSPIRE CAPITAL INC COM CL A 10949T109 1,520 201,350 SH   SOLE 0 201,350 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 556 12,500 SH   SOLE 0 12,500 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 7,023 183,751 SH   SOLE 0 183,751 0 0
CARMAX INC COM 143130102 38,165 421,805 SH   SOLE 0 421,805 0 0
CITY OFFICE REIT INC COM 178587101 425 32,805 SH   SOLE 0 32,805 0 0
COPART INC COM 217204106 44,109 405,933 SH   SOLE 0 405,933 0 0
COSTCO WHSL CORP NEW COM 22160K105 264 550 SH   SOLE 0 550 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 204 1,210 SH   SOLE 0 1,210 0 0
CYTOSORBENTS CORP COM NEW 23283X206 4,741 2,164,999 SH   SOLE 0 2,164,999 0 0
DENNYS CORP COM 24869P104 269 30,940 SH   SOLE 0 30,940 0 0
DIGITALBRIDGE GROUP INC CL A COM 25401T108 52,832 10,826,314 SH   SOLE 0 10,826,314 0 0
DOLLAR TREE INC COM 256746108 15,116 96,990 SH   SOLE 0 96,990 0 0
DUCK CREEK TECHNOLOGIES INC SHS 264120106 6,245 420,564 SH   SOLE 0 420,564 0 0
ENERGY RECOVERY INC COM 29270J100 33,526 1,726,340 SH   SOLE 0 1,726,340 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 4,514 452,300 SH   SOLE 0 452,300 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 3,085 126,608 SH   SOLE 0 126,608 0 0
EQUINIX COM NEW 29444U700 1,952 2,971 SH   SOLE 0 2,971 0 0
EXXON MOBIL CORP COM 30231G102 728 8,496 SH   SOLE 0 8,496 0 0
GLADSTONE COML CORP COM 376536108 1,741 92,435 SH   SOLE 0 92,435 0 0
JPMORGAN CHASE & CO COM 46625H100 329 2,924 SH   SOLE 0 2,924 0 0
KINDER MORGAN INC COM 49456B101 2,633 157,105 SH   SOLE 0 157,105 0 0
L3HARRIS TECHNOLOGIES INC COM 502431109 328 1,357 SH   SOLE 0 1,357 0 0
LOCKHEED MARTIN CORP COM 539830109 45,534 105,903 SH   SOLE 0 105,903 0 0
LUNA INNOVATIONS COM 550351100 754 129,410 SH   SOLE 0 129,410 0 0
MAGNITE INC COM 55955D100 142 16,000 SH   SOLE 0 16,000 0 0
MARKEL CORP COM 570535104 106,106 82,046 SH   SOLE 0 82,046 0 0
MASTERCARD INC CL A 57636Q104 29,048 92,076 SH   SOLE 0 92,076 0 0
MICROSOFT CORP COM 594918104 128,750 501,304 SH   SOLE 0 501,304 0 0
MOODY'S CORP COM 615369105 204 749 SH   SOLE 0 749 0 0
MPLX LP COM UNIT REP LTD 55336V100 6,613 226,852 SH   SOLE 0 226,852 0 0
NEWTEK BUSINESS CVCS CORP COM NEW 652526203 890 47,000 SH   SOLE 0 47,000 0 0
NOVAVAX INC COM 670002401 2,552 49,614 SH   SOLE 0 49,614 0 0
OPTIMIZERX CORP COM NEW 68401U204 11,604 423,666 SH   SOLE 0 423,666 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 54,328 85,995 SH   SOLE 0 85,995 0 0
PFIZER INC COM 717081103 213 4,071 SH   SOLE 0 4,071 0 0
PRIVIA HEALTH GROUP INC COM 74276R102 510 17,500 SH   SOLE 0 17,500 0 0
PROCTER AND GAMBLE CO COM 742718109 319 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP COM 78410G104 2,453 7,664 SH   SOLE 0 7,664 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 488 2,894 SH   SOLE 0 2,894 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 551 38,860 SH   SOLE 0 38,860 0 0
SRAX INC CL A 78472M106 114 34,400 SH   SOLE 0 34,400 0 0
STARWOOD PPTY TR INC COM 85571B105 1,445 69,195 SH   SOLE 0 69,195 0 0
KRAFT HEINZ CO COM 500754106 302 7,925 SH   SOLE 0 7,925 0 0
TRIPLEPOINT VENTURE GROWTH B COM 89677Y100 369 29,000 SH   SOLE 0 29,000 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 23,564 232,981 SH   SOLE 0 232,981 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 688 1,983 SH   SOLE 0 1,983 0 0
VIRGINIA NATL BANKSHARES CORP COM 928031103 340 10,800 SH   SOLE 0 10,800 0 0
VISA INC COM CL A 92826C839 15,975 81,137 SH   SOLE 0 81,137 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 16,153 426,194 SH   SOLE 0 426,194 0 0
DISNEY WALT CO COM DISNEY 254687106 598 6,340 SH   SOLE 0 6,340 0 0