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 952 28,000 SH   SOLE 0 28,000 0 0
AES CORP COM 00130H105 46,886 2,053,706 SH   SOLE 0 2,053,706 0 0
AMAZON COM INC COM 023135106 49,213 14,981 SH   SOLE 0 14,981 0 0
AMERICAN INTL GROUP INC COM NEW 026874784 1,175 21,411 SH   SOLE 0 21,411 0 0
AMERICAN TOWER CORP CL A 03027X100 157,321 592,746 SH   SOLE 0 592,746 0 0
ANTARES PHARMA INC COM 036642106 1,097 301,297 SH   SOLE 0 301,297 0 0
APPLE INC COM 037833100 45,931 324,604 SH   SOLE 0 324,604 0 0
ATOMERA INC COM 04965B100 5,591 242,131 SH   SOLE 0 242,131 0 0
BANK AMER CORP COM 060505104 36,919 869,694 SH   SOLE 0 869,694 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 2,468 6 SH   SOLE 0 6 0 0
BERKSHIRE HATHAWAY INC DEL CL B 084670702 41,998 153,871 SH   SOLE 0 153,871 0 0
B O K FINL CORP COM NEW 05561Q201 11,993 133,925 SH   SOLE 0 133,925 0 0
BRIGHTSPIRE CAPITAL INC COM CL A 10949T109 1,524 162,350 SH   SOLE 0 162,350 0 0
BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 669 12,500 SH   SOLE 0 12,500 0 0
BROOKFIELD INFRASTRUCTURE CO COM SB VTG SHS A 11275Q107 538 8,983 SH   SOLE 0 8,983 0 0
BROOKFIELD INFRAST PARTNERS LP INT UNIT G16252101 6,881 122,637 SH   SOLE 0 122,637 0 0
CARMAX INC COM 143130102 53,098 414,960 SH   SOLE 0 414,960 0 0
CITY OFFICE REIT INC COM 178587101 631 35,305 SH   SOLE 0 35,305 0 0
COPART INC COM 217204106 53,858 388,252 SH   SOLE 0 388,252 0 0
COSTCO WHSL CORP NEW COM 22160K105 247 550 SH   SOLE 0 550 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 210 1,210 SH   SOLE 0 1,210 0 0
CYTOSORBENTS CORP COM NEW 23283X206 11,331 1,395,385 SH   SOLE 0 1,395,385 0 0
DENNYS CORP COM 24869P104 495 30,290 SH   SOLE 0 30,290 0 0
DIGITALBRIDGE GROUP INC CL A COM 25401T108 32,079 5,319,935 SH   SOLE 0 5,319,935 0 0
DOLLAR TREE INC COM 256746108 44,217 461,941 SH   SOLE 0 461,941 0 0
DUCK CREEK TECHNOLOGIES INC SHS 264120106 9,734 220,037 SH   SOLE 0 220,037 0 0
ENERGY RECOVERY INC COM 29270J100 31,915 1,677,090 SH   SOLE 0 1,677,090 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 4,335 452,539 SH   SOLE 0 452,539 0 0
ENTERPRISE PRODS PARTNERS LP COM 293792107 2,740 126,608 SH   SOLE 0 126,608 0 0
ENVIVA PARTNERS LP COM UNIT 29414J107 1,352 25,000 SH   SOLE 0 25,000 0 0
EQUINIX COM NEW 29444U700 2,615 3,309 SH   SOLE 0 3,309 0 0
EXXON MOBIL CORP COM 30231G102 519 8,826 SH   SOLE 0 8,826 0 0
GLADSTONE COML CORP COM 376536108 1,955 92,950 SH   SOLE 0 92,950 0 0
IRON MTN INC NEW COM 46284V101 1,700 39,130 SH   SOLE 0 39,130 0 0
JOHNSON & JOHNSON COM 478160104 333 2,061 SH   SOLE 0 2,061 0 0
JPMORGAN CHASE & CO COM 46625H100 479 2,924 SH   SOLE 0 2,924 0 0
KINDER MORGAN INC COM 49456B101 2,549 152,380 SH   SOLE 0 152,380 0 0
L3HARRIS TECHNOLOGIES INC COM 502431109 299 1,357 SH   SOLE 0 1,357 0 0
LOCKHEED MARTIN CORP COM 539830109 43,210 125,210 SH   SOLE 0 125,210 0 0
LUNA INNOVATIONS COM 550351100 1,182 124,410 SH   SOLE 0 124,410 0 0
MARKEL CORP COM 570535104 99,319 83,103 SH   SOLE 0 83,103 0 0
MASTERCARD INC CL A 57636Q104 31,024 89,232 SH   SOLE 0 89,232 0 0
MICROSOFT CORP COM 594918104 144,190 511,459 SH   SOLE 0 511,459 0 0
MOODY'S CORP COM 615369105 314 885 SH   SOLE 0 885 0 0
MPLX LP COM UNIT REP LTD 55336V100 6,477 227,497 SH   SOLE 0 227,497 0 0
NEW RESIDENTIAL INVT CORP COM NEW 64828T201 282 25,635 SH   SOLE 0 25,635 0 0
NEWTEK BUSINESS CVCS CORP COM NEW 652526203 1,054 38,000 SH   SOLE 0 38,000 0 0
NOVAVAX INC COM 670002401 10,285 49,614 SH   SOLE 0 49,614 0 0
OMNICOM GROUP INC COM 681919106 271 3,738 SH   SOLE 0 3,738 0 0
OPTIMIZERX CORP COM NEW 68401U204 43,536 508,899 SH   SOLE 0 508,899 0 0
O REILLY AUTOMOTIVE INC NEW COM 67103H107 53,089 86,880 SH   SOLE 0 86,880 0 0
PNC FINL SVCS GROUP INC COM 693475105 248 1,266 SH   SOLE 0 1,266 0 0
PROCTER AND GAMBLE CO COM 742718109 310 2,221 SH   SOLE 0 2,221 0 0
SBA COMMUNICATIONS CORP COM 78410G104 2,115 6,398 SH   SOLE 0 6,398 0 0
SPDR GOLD TRUST GOLD SHS 78463V107 291 1,769 SH   SOLE 0 1,769 0 0
SPROTT PHYSICAL GOLD TRUST UNIT 85207H104 536 38,860 SH   SOLE 0 38,860 0 0
STARWOOD PPTY TR INC COM 85571B105 1,839 75,320 SH   SOLE 0 75,320 0 0
STORE CAP CORP COM 862121100 294 9,173 SH   SOLE 0 9,173 0 0
KRAFT HEINZ CO COM 500754106 277 7,520 SH   SOLE 0 7,520 0 0
TRITERRAS INC *W EXP 11/10/2025 G9103H110 16 20,000 SH   SOLE 0 20,000 0 0
TRUPANION INC COM 898202106 8,342 107,400 SH   SOLE 0 107,400 0 0
UNIVERSAL DISPLAY CORP COM 91347P105 35,508 207,695 SH   SOLE 0 207,695 0 0
VANGUARD INDEX FDS S&P 500 ETF SHS 922908363 911 2,309 SH   SOLE 0 2,309 0 0
VIRGINIA NATL BANKSHARES CORP COM 928031103 390 10,800 SH   SOLE 0 10,800 0 0
VISA INC COM CL A 92826C839 19,944 89,537 SH   SOLE 0 89,537 0 0
WALMART INC COM 931142103 224 1,607 SH   SOLE 0 1,607 0 0
WALGREENS BOOTS ALLIANCE INC COM 931427108 15,333 325,896 SH   SOLE 0 325,896 0 0
DISNEY WALT CO COM DISNEY 254687106 1,098 6,490 SH   SOLE 0 6,490 0 0