AVENIR CORP
Long book
$820.5M
Q1 2026
Positions
72
Top-10 weight
74%
concentration
Last quarter
+4.2%
SPY +14.8%
Turnover
12%
of book per quarter
Strategy in plain words
auto-generated from filingsAVENIR CORP is a diversified fundamental manager, running a $820.5M US long book across 72 positions.
The portfolio is concentrated: the top 10 names carry 74% of the portfolio. Turnover is modest: positions are typically held for years. Current anchor positions: MICROSOFT CORP, MARKEL GROUP INC, AMAZON.COM INC, AMERICAN TOWER CORP, O'REILLY AUTOMOTIVE INC.
Over the last 9 quarters its long book ran on average 4.1pp per quarter behind the S&P 500, beating the index in 1 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
-0.2%
Q2 2024
+5.7%
Q3 2024
+0.8%
Q4 2024
-0.4%
Q1 2025
+3.7%
Q2 2025
+0.8%
Q3 2025
-2.4%
Q4 2025
-9.2%
Q1 2026
+4.2%
Sector allocation
Technology 32%
Consumer discretionary 26%
Financials 23%
Services media 9%
Industrials 4%
Utilities 3%
Energy 2%
Healthcare 1%
Long book by quarter
What does AVENIR CORP own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| MSFT MICROSOFT CORP | Technology | 244.1K | $90.4M | 11.0% | -0.5% |
| MKL MARKEL GROUP INC | Financials | 45.8K | $87.7M | 10.7% | -1.2% |
| AMZN AMAZON.COM INC | Consumer discretionary | 375.3K | $78.2M | 9.5% | -0.9% |
| ORLY O'REILLY AUTOMOTIVE INC | Consumer discretionary | 749.7K | $69.2M | 8.4% | -1.0% |
| AAPL APPLE INC | Technology | 228.9K | $58.1M | 7.1% | -0.7% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 108.9K | $52.2M | 6.4% | -0.7% |
| CPRT COPART INC | Consumer discretionary | 1.1M | $36.8M | 4.5% | -0.7% |
| MA MASTERCARD INC - A | Services media | 65.1K | $32.5M | 4.0% | +3.1% |
| ADBE ADOBE INC | Technology | 126.6K | $30.8M | 3.8% | +10.8% |
| WAY WAYSTAR HOLDING CORP | Technology | 973.3K | $23.5M | 2.9% | +30.4% |
| AMTM AMENTUM HOLDINGS INC | Services media | 841.1K | $21.9M | 2.7% | -1.2% |
| OLED UNIVERSAL DISPLAY CORP | Technology | 230.2K | $21.1M | 2.6% | 0.0% |
| LMT LOCKHEED MARTIN CORP | Industrials | 32.0K | $19.3M | 2.4% | -50.3% |
| BOKF BOK FINANCIAL CORPORATION | Financials | 125.0K | $16.0M | 2.0% | 0.0% |
| V VISA INC-CLASS A SHARES | Services media | 41.1K | $12.4M | 1.5% | -1.0% |
| MPLX MPLX LP | Energy | 186.9K | $10.7M | 1.3% | Held |
| ET ENERGY TRANSFER LP | Utilities | 451.3K | $8.7M | 1.1% | Held |
| ERII ENERGY RECOVERY INC | Industrials | 817.8K | $8.2M | 1.0% | -15.7% |
| ATOM ATOMERA INC | Technology | 1.5M | $5.6M | 0.7% | +137.9% |
| KMI KINDER MORGAN INC | Utilities | 145.2K | $4.9M | 0.6% | Held |
| EPD ENTERPRISE PRODUCTS PARTNERS | Utilities | 125.5K | $4.7M | 0.6% | Held |
| BRK/A BERKSHIRE HATHAWAY INC-CL A | Financials | 6 | $4.3M | 0.5% | Held |
| GOOG ALPHABET INC-CL C | Technology | 10.8K | $3.1M | 0.4% | Held |
| CTSO CYTOSORBENTS CORP | Healthcare | 5.2M | $3.0M | 0.4% | -0.3% |
| MOH MOLINA HEALTHCARE INC | Financials | 14.8K | $2.0M | 0.2% | New |
| AX AXOS FINANCIAL INC | Financials | 20.8K | $1.8M | 0.2% | Held |
| AIG AMERICAN INTERNATIONAL GROUP | Financials | 20.2K | $1.5M | 0.2% | Held |
| COHR COHERENT CORP | Other | 6.1K | $1.5M | 0.2% | Held |
| XOM EXXON MOBIL CORP | Energy | 8.3K | $1.4M | 0.2% | Held |
| BAC BANK OF AMERICA CORP | Financials | 24.7K | $1.2M | 0.1% | Held |
| BSM BLACK STONE MINERALS LP | Energy | 73.9K | $1.1M | 0.1% | Held |
| ADPT ADAPTIVE BIOTECHNOLOGIES | Healthcare | 76.4K | $1.1M | 0.1% | Held |
| BN BROOKFIELD CORP | Real estate | 22.5K | $911K | 0.1% | Held |
| PRVA PRIVIA HEALTH GROUP INC | Healthcare | 36.7K | $756K | 0.1% | Held |
| INTC INTEL CORP | Technology | 11.4K | $503K | 0.1% | Held |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 500 | $498K | 0.1% | Held |
| OPRX OPTIMIZERX CORP | Services media | 77.3K | $485K | 0.1% | Held |
| LHX L3HARRIS TECHNOLOGIES INC | Technology | 1.4K | $468K | 0.1% | Held |
| KMX CARMAX INC | Consumer discretionary | 11.0K | $458K | 0.1% | -70.8% |
| NEWT NEWTEKONE INC | Financials | 40.8K | $447K | 0.1% | Held |
| WMT WALMART INC | Consumer discretionary | 3.5K | $435K | 0.1% | Held |
| ANET ARISTA NETWORKS INC | Technology | 3.4K | $414K | 0.1% | Held |
| VABK VIRGINIA NATIONAL BANKSHARES | Financials | 10.8K | $413K | 0.1% | Held |
| TRGP TARGA RESOURCES CORP | Utilities | 1.6K | $402K | 0.0% | Held |
| CCC CCC INTELLIGENT SOLUTIONS HO | Technology | 61.0K | $366K | 0.0% | -7.3% |
| ENVX ENOVIX CORP | Technology | 62.8K | $325K | 0.0% | Held |
| ABBV ABBVIE INC | Healthcare | 1.5K | $318K | 0.0% | Held |
| RTX RTX CORP | Industrials | 1.6K | $315K | 0.0% | Held |
| DLTR DOLLAR TREE INC | Consumer discretionary | 2.9K | $313K | 0.0% | Held |
| PNC PNC FINANCIAL SERVICES GROUP | Financials | 1.3K | $263K | 0.0% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 14, 2026 | 72 | $820.5M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 13, 2026 | 71 | $921.7M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 73 | $960.1M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 14, 2025 | 74 | $972.9M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 14, 2025 | 69 | $943.6M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 13, 2025 | 69 | $976.8M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 66 | $986.3M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 67 | $1.03B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 16, 2024 | 66 | $1.17B | canonical | SEC ↗ |
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