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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ABBVIE INC COM 00287Y109 BBG0025Y4RY4 217,926 1,462 SH   SOLE 0 1,462 0 0
ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 BBG001J2PFF5 166,579 30,565 SH   SOLE 0 30,565 0 0
AES CORP COM 00130H105 BBG000C23KJ3 24,508,886 1,612,427 SH   SOLE 0 1,612,427 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB30 1,358,055 10,300 SH   SOLE 0 10,300 0 0
AMAZON COM INC COM 023135106 BBG000BVPV84 68,423,802 538,261 SH   SOLE 0 538,261 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 BBG000BBDZG3 1,289,568 21,280 SH   SOLE 0 21,280 0 0
AMERICAN TOWER CORP NEW CL A 03027X100 BBG000B9XYV2 95,596,020 581,308 SH   SOLE 0 581,308 0 0
APPLE INC COM 037833100 BBG000B9XRY4 55,527,183 324,322 SH   SOLE 0 324,322 0 0
ATOMERA INC COM 04965B100 BBG00D88BWP5 1,976,382 315,716 SH   SOLE 0 315,716 0 0
BANK AMERICA CORP COM 060505104 BBG000BCTLF6 15,315,852 559,381 SH   SOLE 0 559,381 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG000DWCFL4 3,188,862 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG000DWG505 54,437,706 155,403 SH   SOLE 0 155,403 0 0
BOK FINL CORP COM NEW 05561Q201 BBG000CFZ003 10,274,231 128,460 SH   SOLE 0 128,460 0 0
BRIGHTSPIRE CAPITAL INC COM CL A 10949T109 BBG00JVRRQF1 1,843,883 294,550 SH   SOLE 0 294,550 0 0
BROOKFIELD CORP CL A LTD VT SH 11271J107 BBG000C9KL89 469,050 15,000 SH   SOLE 0 15,000 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 BBG000B9Y8D8 4,822,514 164,031 SH   SOLE 0 164,031 0 0
CARMAX INC COM 143130102 BBG000BLMZK6 18,046,265 255,143 SH   SOLE 0 255,143 0 0
CITY OFFICE REIT INC COM 178587101 BBG005T5RWR6 110,628 26,030 SH   SOLE 0 26,030 0 0
COPART INC COM 217204106 BBG000BM9RH1 69,273,380 1,607,644 SH   SOLE 0 1,607,644 0 0
COSTCO WHSL CORP NEW COM 22160K105 BBG000F6H8W8 282,480 500 SH   SOLE 0 500 0 0
CYTOSORBENTS CORP COM NEW 23283X206 BBG000C3P8V0 5,108,706 2,717,397 SH   SOLE 0 2,717,397 0 0
DENNYS CORP COM 24869P104 BBG000BC09P3 259,944 30,690 SH   SOLE 0 30,690 0 0
DIGITALBRIDGE GROUP INC CL A NEW 25401T603 BBG00D30HGP6 59,054,690 3,359,197 SH   SOLE 0 3,359,197 0 0
DOLLAR TREE INC COM 256746108 BBG000BSC0K9 845,319 7,941 SH   SOLE 0 7,941 0 0
ENERGY RECOVERY INC COM 29270J100 BBG000VFBBC1 37,765,245 1,780,540 SH   SOLE 0 1,780,540 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 BBG000BM2FL9 6,286,829 448,099 SH   SOLE 0 448,099 0 0
ENOVIX CORPORATION COM 293594107 BBG00YC53854 321,217 25,595 SH   SOLE 0 25,595 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 BBG000BR3012 3,465,261 126,608 SH   SOLE 0 126,608 0 0
EQUINIX INC COM 29444U700 BBG000MBDGM6 2,146,825 2,956 SH   SOLE 0 2,956 0 0
EXXON MOBIL CORP COM 30231G102 BBG000GZQ728 998,960 8,496 SH   SOLE 0 8,496 0 0
GLADSTONE COMMERCIAL CORP COM 376536108 BBG000M2NYQ2 1,035,910 85,190 SH   SOLE 0 85,190 0 0
INTEL CORP COM 458140100 BBG000C0G1D1 405,021 11,393 SH   SOLE 0 11,393 0 0
JPMORGAN CHASE & CO COM 46625H100 BBG000DMBXR2 424,038 2,924 SH   SOLE 0 2,924 0 0
KINDER MORGAN INC DEL COM 49456B101 BBG0019JZ882 2,487,083 150,005 SH   SOLE 0 150,005 0 0
L3HARRIS TECHNOLOGIES INC COM 502431109 BBG000BLGFJ9 236,281 1,357 SH   SOLE 0 1,357 0 0
LOCKHEED MARTIN CORP COM 539830109 BBG000C1BW00 42,763,947 104,568 SH   SOLE 0 104,568 0 0
LUNA INNOVATIONS COM 550351100 BBG000GP4ZR5 957,993 163,480 SH   SOLE 0 163,480 0 0
MAGNITE INC COM 55955D100 BBG000PBDRC0 263,900 35,000 SH   SOLE 0 35,000 0 0
MARKEL GROUP INC COM 570535104 BBG000FC7366 128,680,967 87,390 SH   SOLE 0 87,390 0 0
MASTERCARD INCORPORATED CL A 57636Q104 BBG000F1ZSQ2 35,978,468 90,875 SH   SOLE 0 90,875 0 0
MICROSOFT CORP COM 594918104 BBG000BPH459 145,950,631 462,235 SH   SOLE 0 462,235 0 0
MPLX LP COM UNIT REP LTD 55336V100 BBG0035TJGV4 7,137,618 200,664 SH   SOLE 0 200,664 0 0
NEWTEK BUSINESS SVCS CORP COM NEW 652526203 BBG000BH37H2 955,800 64,800 SH   SOLE 0 64,800 0 0
NOVAVAX INC COM NEW 670002401 BBG000NVSBL7 206,050 28,460 SH   SOLE 0 28,460 0 0
OPTIMIZERX CORP COM NEW 68401U204 BBG000HKQH91 2,392,731 307,549 SH   SOLE 0 307,549 0 0
OREILLY AUTOMOTIVE INC COM 67103H107 BBG000BGYWY6 76,079,307 83,708 SH   SOLE 0 83,708 0 0
PRIVIA HEALTH GROUP INC COM 74276R102 BBG00ZXYXVP9 681,835 29,645 SH   SOLE 0 29,645 0 0
PROCTER AND GAMBLE CO COM 742718109 BBG000BR2TH3 323,955 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP NEW CL A 78410G104 BBG000D2M0Z7 11,214,925 56,027 SH   SOLE 0 56,027 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 BBG000CRF6Q8 362,445 2,114 SH   SOLE 0 2,114 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 BBG000Q83F79 556,475 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 BBG000M1J270 1,387,743 71,718 SH   SOLE 0 71,718 0 0
TRIPLEPOINT VENTURE GROWTH B COM 89677Y100 BBG005GXFKJ7 345,180 33,000 SH   SOLE 0 33,000 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 BBG000BLRP41 35,567,184 226,557 SH   SOLE 0 226,557 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 BBG0015VYNT4 757,911 1,930 SH   SOLE 0 1,930 0 0
VIRGINIA NATL BANKSHARES CORP COM 928031103 BBG000C49RT7 327,780 10,800 SH   SOLE 0 10,800 0 0
VISA INC COM CL A 92826C839 BBG000PSKYX7 17,605,501 76,542 SH   SOLE 0 76,542 0 0
WALMART INC COM 931142103 BBG000BWXBC2 261,645 1,636 SH   SOLE 0 1,636 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 BBG000BWLMJ4 9,244,081 415,651 SH   SOLE 0 415,651 0 0
DISNEY WALT CO COM 254687106 BBG000BH4R78 400,387 4,940 SH   SOLE 0 4,940 0 0