AVENIR CORP — 13F Holdings & Portfolio
CIK 1033475 · latest 13F-HR filed 2026-05-14
AVENIR CORP manages $820.5M in 13F-reported U.S. long-equity assets across 72 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are MSFT (11.01%), MKL (10.69%), AMZN (9.53%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 5 new positions, exited 4, added to 20, and trimmed 33.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$820.5M
Long-equity book
72
Distinct positions
2026-03-31
Filed 2026-05-14
+5 / −4 / ↑20 / ↓33
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- ATOMERA INC$4.2M +310.1%
- ENERGY TRANSFER LP$1.3M +17.0%
- BOK FINL CORP$1.2M +8.1%
- KINDER MORGAN INC DEL$876.9K +22.0%
- ENTERPRISE PRODS PARTNERS LP$725.3K +18.0%
Top Trims
- MICROSOFT CORP-$28.3M -23.9%
- MARKEL GROUP INC-$12.0M -12.0%
- LOCKHEED MARTIN CORP-$11.8M -37.9%
- AMAZON COM INC-$9.3M -10.6%
- ADOBE INC-$9.2M -23.1%
New Positions
- MOLINA HEALTHCARE INC$2.0M
- INSULET CORP$237.1K
- ENBRIDGE INC.$215.2K
- MAGNITE INC$210.5K
- GE VERNOVA INC.$201.6K
Exited Positions
- AES CORP$1.4M
- DIGITALBRIDGE GROUP INC$1.1M
- ORACLE CORP$263.1K
- INVESCO QQQ TR$211.3K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | MICROSOFT CORP | MSFT | 594918104 | $90.4M | 11.01% | 244,110 | SH |
| 2 | MARKEL GROUP INC | MKL | 570535104 | $87.7M | 10.69% | 45,832 | SH |
| 3 | AMAZON COM INC | AMZN | 023135106 | $78.2M | 9.53% | 375,273 | SH |
| 4 | AMERICAN TOWER CORP NEW | AMT | 03027X100 | $71.7M | 8.74% | 415,352 | SH |
| 5 | OREILLY AUTOMOTIVE INC | ORLY | 67103H107 | $69.2M | 8.43% | 749,700 | SH |
| 6 | APPLE INC | AAPL | 037833100 | $58.1M | 7.08% | 228,871 | SH |
| 7 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $52.2M | 6.36% | 108,941 | SH |
| 8 | COPART INC | CPRT | 217204106 | $36.8M | 4.49% | 1,109,001 | SH |
| 9 | MASTERCARD INCORPORATED | MA | 57636Q104 | $32.5M | 3.96% | 65,067 | SH |
| 10 | ADOBE INC | ADBE | 00724F101 | $30.8M | 3.75% | 126,638 | SH |
| 11 | WAYSTAR HLDG CORP | WAY | 946784105 | $23.5M | 2.86% | 973,260 | SH |
| 12 | AMENTUM HOLDINGS INC | AMTM | 023939101 | $21.9M | 2.67% | 841,099 | SH |
| 13 | UNIVERSAL DISPLAY CORP | OLED | 91347P105 | $21.1M | 2.57% | 230,152 | SH |
| 14 | LOCKHEED MARTIN CORP | LMT | 539830109 | $19.3M | 2.35% | 31,952 | SH |
| 15 | BOK FINL CORP | BOKF | 05561Q201 | $16.0M | 1.95% | 124,957 | SH |
| 16 | VISA INC | V | 92826C839 | $12.4M | 1.51% | 41,075 | SH |
| 17 | MPLX LP | MPLX | 55336V100 | $10.7M | 1.30% | 186,892 | SH |
| 18 | SBA COMMUNICATIONS CORP NEW | SBAC | 78410G104 | $10.6M | 1.30% | 61,747 | SH |
| 19 | ENERGY TRANSFER LP | ET | 29273V100 | $8.7M | 1.06% | 451,327 | SH |
| 20 | ENERGY RECOVERY INC | ERII | 29270J100 | $8.2M | 1.00% | 817,755 | SH |
| 21 | ATOMERA INC | ATOM | 04965B100 | $5.6M | 0.68% | 1,461,415 | SH |
| 22 | KINDER MORGAN INC DEL | KMI | 49456B101 | $4.9M | 0.59% | 145,185 | SH |
| 23 | ENTERPRISE PRODS PARTNERS LP | EPD | 293792107 | $4.7M | 0.58% | 125,478 | SH |
| 24 | BERKSHIRE HATHAWAY INC DEL | BRK.A | 084670108 | $4.3M | 0.53% | 6 | SH |
| 25 | ALPHABET INC | GOOG | 02079K107 | $3.1M | 0.38% | 10,770 | SH |
| 26 | CYTOSORBENTS CORP | CTSO | 23283X206 | $3.0M | 0.36% | 5,215,776 | SH |
| 27 | EQUINIX INC | EQIX | 29444U700 | $2.7M | 0.33% | 2,741 | SH |
| 28 | STARWOOD PPTY TR INC | STWD | 85571B105 | $2.3M | 0.29% | 136,193 | SH |
| 29 | SPROTT PHYSICAL GOLD TRUST | PHYS | 85207H104 | $2.1M | 0.26% | 60,310 | SH |
| 30 | MOLINA HEALTHCARE INC | MOH | 60855R100 | $2.0M | 0.24% | 14,762 | SH |
| 31 | AXOS FINANCIAL INC. | AX | 05465C100 | $1.8M | 0.22% | 20,790 | SH |
| 32 | AMERICAN INTL GROUP INC | AIG | 026874784 | $1.5M | 0.19% | 20,180 | SH |
| 33 | COHERENT CORP | COHR | 19247G107 | $1.5M | 0.18% | 6,110 | SH |
| 34 | EXXON MOBIL CORP | XOM | 30231G102 | $1.4M | 0.17% | 8,345 | SH |
| 35 | BRIGHTSPIRE CAPITAL INC | BRSP | 10949T109 | $1.2M | 0.15% | 221,900 | SH |
| 36 | BANK AMERICA CORP | BAC | 060505104 | $1.2M | 0.15% | 24,690 | SH |
| 37 | VANGUARD INDEX FDS | VOO | 922908363 | $1.2M | 0.14% | 1,930 | SH |
| 38 | BLACK STONE MINERALS LP | BSM | 09225M101 | $1.1M | 0.14% | 73,900 | SH |
| 39 | ADAPTIVE BIOTECHNOLOGIES COR | ADPT | 00650F109 | $1.1M | 0.13% | 76,365 | SH |
| 40 | BROOKFIELD CORP | BN | 11271J107 | $910.6K | 0.11% | 22,500 | SH |
| 41 | SPDR GOLD TRUST | GLD | 78463V107 | $909.6K | 0.11% | 2,114 | SH |
| 42 | LAMAR ADVERTISING CO NEW | LAMR | 512816109 | $858.8K | 0.10% | 6,780 | SH |
| 43 | BROOKFIELD INFRAST PARTNERS | BIP | G16252101 | $833.3K | 0.10% | 23,071 | SH |
| 44 | GLADSTONE COMMERCIAL CORP | GOOD | 376536108 | $762.9K | 0.09% | 66,748 | SH |
| 45 | PRIVIA HEALTH GROUP INC | PRVA | 74276R102 | $755.8K | 0.09% | 36,745 | SH |
| 46 | INTEL CORP | INTC | 458140100 | $502.8K | 0.06% | 11,393 | SH |
| 47 | COSTCO WHSL CORP NEW | COST | 22160K105 | $498.2K | 0.06% | 500 | SH |
| 48 | OPTIMIZERX CORP | OPRX | 68401U204 | $485.2K | 0.06% | 77,260 | SH |
| 49 | L3HARRIS TECHNOLOGIES INC | LHX | 502431109 | $468.4K | 0.06% | 1,357 | SH |
| 50 | CARMAX INC | KMX | 143130102 | $458.3K | 0.06% | 11,021 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-14 | $820.5M | 72 | 0001033475-26-000005 |
| 2025-12-31 | 2026-02-13 | $921.7M | 71 | 0001033475-26-000002 |
| 2025-09-30 | 2025-11-14 | $960.1M | 73 | 0001033475-25-000009 |