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 237 1,462 SH   SOLE 0 1,462 0 0
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 403 29,000 SH   SOLE 0 29,000 0 0
AES CORP COM 00130H105 48,902 1,900,577 SH   SOLE 0 1,900,577 0 0
AMAZON COM INC COM 023135106 72,146 22,131 SH   SOLE 0 22,131 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 1,344 21,411 SH   SOLE 0 21,411 0 0
AMERICAN TOWER CORP CL A 03027X100 153,745 611,994 SH   SOLE 0 611,994 0 0
ANTARES PHARMA INC COM 036642106 1,242 302,852 SH   SOLE 0 302,852 0 0
APPLE INC COM 037833100 56,900 325,868 SH   SOLE 0 325,868 0 0
ATOMERA INC COM 04965B100 3,319 254,111 SH   SOLE 0 254,111 0 0
BANK AMER CORP COM 060505104 35,550 862,457 SH   SOLE 0 862,457 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 3,174 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 54,776 155,213 SH   SOLE 0 155,213 0 0
B O K FINL CORP COM NEW 05561Q201 12,524 133,310 SH   SOLE 0 133,310 0 0
BRIGHTSPIRE CAPITAL INC COM CL A 10949T109 1,862 201,350 SH   SOLE 0 201,350 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 707 12,500 SH   SOLE 0 12,500 0 0
BROOKFIELD INFRASTRUCTURE CO COM SB VTG SHS A 11275Q107 678 8,982 SH   SOLE 0 8,982 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 8,114 122,509 SH   SOLE 0 122,509 0 0
CARMAX INC COM 143130102 40,935 424,283 SH   SOLE 0 424,283 0 0
CITY OFFICE REIT INC COM 178587101 579 32,805 SH   SOLE 0 32,805 0 0
COPART INC COM 217204106 48,613 387,449 SH   SOLE 0 387,449 0 0
COSTCO WHSL CORP NEW COM 22160K105 317 550 SH   SOLE 0 550 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 223 1,210 SH   SOLE 0 1,210 0 0
CYTOSORBENTS CORP COM NEW 23283X206 6,943 2,176,509 SH   SOLE 0 2,176,509 0 0
DENNYS CORP COM 24869P104 443 30,940 SH   SOLE 0 30,940 0 0
DIGITALBRIDGE GROUP INC CL A COM 25401T108 51,632 7,171,100 SH   SOLE 0 7,171,100 0 0
DOLLAR TREE INC COM 256746108 51,602 322,213 SH   SOLE 0 322,213 0 0
DUCK CREEK TECHNOLOGIES INC SHS 264120106 9,541 431,324 SH   SOLE 0 431,324 0 0
ENERGY RECOVERY INC COM 29270J100 34,940 1,734,868 SH   SOLE 0 1,734,868 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 5,061 452,300 SH   SOLE 0 452,300 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 3,268 126,608 SH   SOLE 0 126,608 0 0
EQUINIX COM NEW 29444U700 2,203 2,971 SH   SOLE 0 2,971 0 0
EXXON MOBIL CORP COM 30231G102 702 8,496 SH   SOLE 0 8,496 0 0
GLADSTONE COML CORP COM 376536108 2,041 92,710 SH   SOLE 0 92,710 0 0
JOHNSON & JOHNSON COM 478160104 365 2,061 SH   SOLE 0 2,061 0 0
JPMORGAN CHASE & CO COM 46625H100 399 2,924 SH   SOLE 0 2,924 0 0
KINDER MORGAN INC COM 49456B101 2,971 157,105 SH   SOLE 0 157,105 0 0
L3HARRIS TECHNOLOGIES INC COM 502431109 338 1,362 SH   SOLE 0 1,362 0 0
LOCKHEED MARTIN CORP COM 539830109 47,064 106,624 SH   SOLE 0 106,624 0 0
LUNA INNOVATIONS COM 550351100 998 129,410 SH   SOLE 0 129,410 0 0
MAGNITE INC COM 55955D100 159 12,000 SH   SOLE 0 12,000 0 0
MARKEL CORP COM 570535104 122,132 82,788 SH   SOLE 0 82,788 0 0
MASTERCARD INC CL A 57636Q104 32,427 90,735 SH   SOLE 0 90,735 0 0
MICROSOFT CORP COM 594918104 155,584 504,636 SH   SOLE 0 504,636 0 0
MOODY'S CORP COM 615369105 253 749 SH   SOLE 0 749 0 0
MPLX LP COM UNIT REP LTD 55336V100 7,527 226,852 SH   SOLE 0 226,852 0 0
NEWTEK BUSINESS CVCS CORP COM NEW 652526203 1,015 38,000 SH   SOLE 0 38,000 0 0
NOVAVAX INC COM 670002401 3,654 49,614 SH   SOLE 0 49,614 0 0
OPTIMIZERX CORP COM NEW 68401U204 15,978 423,711 SH   SOLE 0 423,711 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 59,038 86,192 SH   SOLE 0 86,192 0 0
PFIZER INC COM 717081103 215 4,146 SH   SOLE 0 4,146 0 0
PNC FINL SVCS GROUP INC COM 693475105 234 1,266 SH   SOLE 0 1,266 0 0
PRIVIA HEALTH GROUP INC COM 74276R102 468 17,500 SH   SOLE 0 17,500 0 0
PROCTER AND GAMBLE CO COM 742718109 339 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP COM 78410G104 2,622 7,619 SH   SOLE 0 7,619 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 523 2,894 SH   SOLE 0 2,894 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 597 38,860 SH   SOLE 0 38,860 0 0
SRAX INC CL A 78472M106 166 34,400 SH   SOLE 0 34,400 0 0
STARWOOD PPTY TR INC COM 85571B105 1,697 70,215 SH   SOLE 0 70,215 0 0
STORE CAP CORP COM 862121100 210 7,200 SH   SOLE 0 7,200 0 0
KRAFT HEINZ CO COM 500754106 312 7,925 SH   SOLE 0 7,925 0 0
TRITERRAS INC *W EXP 11/10/2025 G9103H110 28 70,000 SH   SOLE 0 70,000 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 38,521 230,734 SH   SOLE 0 230,734 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 823 1,983 SH   SOLE 0 1,983 0 0
VIRGINIA NATL BANKSHARES CORP COM 928031103 373 10,800 SH   SOLE 0 10,800 0 0
VISA INC COM CL A 92826C839 19,524 88,039 SH   SOLE 0 88,039 0 0
WALMART INC COM 931142103 239 1,607 SH   SOLE 0 1,607 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 19,193 428,698 SH   SOLE 0 428,698 0 0
DISNEY WALT CO COM DISNEY 254687106 890 6,490 SH   SOLE 0 6,490 0 0