Filed: 8/13/2026ACC: 0001033475-26-000006
📋 What this filing means
AVENIR CORP filed this quarterly 13F‑HR report disclosing 79 equity positions with a total reported market value of $820.74M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
79
Positions
$820.74M
Total AUM (reported)
15.27M
Total Shares
Allocation by class
COM$581.97M70.9%
CL A$115.83M14.1%
CL B NEW$53.60M6.5%
COM NEW$22.04M2.7%
COM CL A$15.00M1.8%
COM UNIT REP LTD$10.44M1.3%
COM UT LTD PTN$8.61M1.0%
Portfolio Concentration
Top 3$261.67M31.9%
4–10$340.81M41.5%
11–25$173.69M21.2%
Rest$44.57M5.4%
Top 3 weight
31.9%
Top 10 weight
73.4%
Voting Authority Distribution
Total shares with voting rights: 15.27M
Sole
Full voting authority
15.27M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole79
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings79
Rows:
MICROSOFT CORP
SOLEShares239.60K
TypeSH
Market value$89.38M
10.89%
Sole
239.60K
Shared
0.00
None
0.00
MARKEL GROUP INC
SOLEShares44.21K
TypeSH
Market value$86.35M
10.52%
Sole
44.21K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares360.57K
TypeSH
Market value$85.94M
10.47%
Sole
360.57K
Shared
0.00
None
0.00
OREILLY AUTOMOTIVE INC
SOLEShares731.15K
TypeSH
Market value$67.33M
8.20%
Sole
731.15K
Shared
0.00
None
0.00
AMERICAN TOWER CORP NEW
SOLEShares407.12K
TypeSH
Market value$66.59M
8.11%
Sole
407.12K
Shared
0.00
None
0.00
APPLE INC
SOLEShares215.16K
TypeSH
Market value$62.26M
7.59%
Sole
215.16K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares107.11K
TypeSH
Market value$53.60M
6.53%
Sole
107.11K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares63.77K
TypeSH
Market value$32.75M
3.99%
Sole
63.77K
Shared
0.00
None
0.00
COPART INC
SOLEShares1.08M
TypeSH
Market value$30.48M
3.71%
Sole
1.08M
Shared
0.00
None
0.00
ADOBE INC
SOLEShares135.58K
TypeSH
Market value$27.80M
3.39%
Sole
135.58K
Shared
0.00
None
0.00
WAYSTAR HLDG CORP
SOLEShares1.14M
TypeSH
Market value$23.50M
2.86%
Sole
1.14M
Shared
0.00
None
0.00
UNIVERSAL DISPLAY CORP
SOLEShares228.01K
TypeSH
Market value$19.74M
2.41%
Sole
228.01K
Shared
0.00
None
0.00
BOK FINL CORP
SOLEShares124.02K
TypeSH
Market value$17.22M
2.10%
Sole
124.02K
Shared
0.00
None
0.00
AMENTUM HOLDINGS INC
SOLEShares811.73K
TypeSH
Market value$16.78M
2.04%
Sole
811.73K
Shared
0.00
None
0.00
LOCKHEED MARTIN CORP
SOLEShares31.38K
TypeSH
Market value$15.98M
1.95%
Sole
31.38K
Shared
0.00
None
0.00
VISA INC
SOLEShares40.21K
TypeSH
Market value$13.79M
1.68%
Sole
40.21K
Shared
0.00
None
0.00
ATOMERA INC
SOLEShares1.47M
TypeSH
Market value$12.79M
1.56%
Sole
1.47M
Shared
0.00
None
0.00
SBA COMMUNICATIONS CORP NEW
SOLEShares61.98K
TypeSH
Market value$10.94M
1.33%
Sole
61.98K
Shared
0.00
None
0.00
MPLX LP
SOLEShares185.37K
TypeSH
Market value$10.44M
1.27%
Sole
185.37K
Shared
0.00
None
0.00
ENERGY TRANSFER LP
SOLEShares450.37K
TypeSH
Market value$8.61M
1.05%
Sole
450.37K
Shared
0.00
None
0.00
ENERGY RECOVERY INC
SOLEShares693.89K
TypeSH
Market value$6.26M
0.76%
Sole
693.89K
Shared
0.00
None
0.00
KINDER MORGAN INC DEL
SOLEShares145.13K
TypeSH
Market value$4.64M
0.57%
Sole
145.13K
Shared
0.00
None
0.00
ENTERPRISE PRODS PARTNERS LP
SOLEShares125.48K
TypeSH
Market value$4.61M
0.56%
Sole
125.48K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares6.00
TypeSH
Market value$4.49M
0.55%
Sole
6.00
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares10.97K
TypeSH
Market value$3.88M
0.47%
Sole
10.97K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPSOLE | COM | 239.60K | SH | $89.38M 10.89% | 239.60K | 0.00 | 0.00 |
MARKEL GROUP INCSOLE | COM | 44.21K | SH | $86.35M 10.52% | 44.21K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 360.57K | SH | $85.94M 10.47% | 360.57K | 0.00 | 0.00 |
OREILLY AUTOMOTIVE INCSOLE | COM | 731.15K | SH | $67.33M 8.20% | 731.15K | 0.00 | 0.00 |
AMERICAN TOWER CORP NEWSOLE | CL A | 407.12K | SH | $66.59M 8.11% | 407.12K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 215.16K | SH | $62.26M 7.59% | 215.16K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 107.11K | SH | $53.60M 6.53% | 107.11K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 63.77K | SH | $32.75M 3.99% | 63.77K | 0.00 | 0.00 |
COPART INCSOLE | COM | 1.08M | SH | $30.48M 3.71% | 1.08M | 0.00 | 0.00 |
ADOBE INCSOLE | COM | 135.58K | SH | $27.80M 3.39% | 135.58K | 0.00 | 0.00 |
WAYSTAR HLDG CORPSOLE | COM | 1.14M | SH | $23.50M 2.86% | 1.14M | 0.00 | 0.00 |
UNIVERSAL DISPLAY CORPSOLE | COM | 228.01K | SH | $19.74M 2.41% | 228.01K | 0.00 | 0.00 |
BOK FINL CORPSOLE | COM NEW | 124.02K | SH | $17.22M 2.10% | 124.02K | 0.00 | 0.00 |
AMENTUM HOLDINGS INCSOLE | COM | 811.73K | SH | $16.78M 2.04% | 811.73K | 0.00 | 0.00 |
LOCKHEED MARTIN CORPSOLE | COM | 31.38K | SH | $15.98M 1.95% | 31.38K | 0.00 | 0.00 |
VISA INCSOLE | COM CL A | 40.21K | SH | $13.79M 1.68% | 40.21K | 0.00 | 0.00 |
ATOMERA INCSOLE | COM | 1.47M | SH | $12.79M 1.56% | 1.47M | 0.00 | 0.00 |
SBA COMMUNICATIONS CORP NEWSOLE | CL A | 61.98K | SH | $10.94M 1.33% | 61.98K | 0.00 | 0.00 |
MPLX LPSOLE | COM UNIT REP LTD | 185.37K | SH | $10.44M 1.27% | 185.37K | 0.00 | 0.00 |
ENERGY TRANSFER LPSOLE | COM UT LTD PTN | 450.37K | SH | $8.61M 1.05% | 450.37K | 0.00 | 0.00 |
ENERGY RECOVERY INCSOLE | COM | 693.89K | SH | $6.26M 0.76% | 693.89K | 0.00 | 0.00 |
KINDER MORGAN INC DELSOLE | COM | 145.13K | SH | $4.64M 0.57% | 145.13K | 0.00 | 0.00 |
ENTERPRISE PRODS PARTNERS LPSOLE | COM | 125.48K | SH | $4.61M 0.56% | 125.48K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL A | 6.00 | SH | $4.49M 0.55% | 6.00 | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL C | 10.97K | SH | $3.88M 0.47% | 10.97K | 0.00 | 0.00 |
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