Avenir Corp.

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 14, 2025), Avenir Corp. reported 70 stock positions worth $953.0 million. Its top holding was Microsoft (MSFT) at 10.6% of the portfolio, followed by American Tower (AMT, 9.9%) and Markel (MKL, 9.7%). Compared with Q4 2024, it opened 3 new positions, sold out of 2, added to 8 and reduced 22. The biggest buy was Amentum (AMTM, shares +367%) and the biggest sale CCC Intelligent Solutions Ho (CCC, shares −96%).

Most Recent 13F
Q2 2026
Location
ALEXANDRIA, VA
CIK
0001033475
Portfolio Value
$953.0M (Q1 2025)
SEC Filing
0001033475-25-000005 ↗ filed May 14, 2025

Holdings Value

0$500.0M$1.0B$1.5B Q1 2024: $1.2B Q1 2024 Q2 2024: $1.0B Q2 2024 Q3 2024: $991.7M Q3 2024 Q4 2024: $976.8M Q4 2024 Q1 2025: $953.0M $953.0M Q1 2025 Q2 2025: $972.9M Q2 2025 Q3 2025: $960.1M Q3 2025 Q4 2025: $921.7M Q4 2025 Q1 2026: $820.5M Q1 2026 Q2 2026: $820.7M Q2 2026

Holdings 70 stocks · $953.0M
MSFT Microsoft Corp. 10.65% 270,350 $101.5M Reduce -1.2%
AMT American Tower Corp. 9.94% 435,442 $94.8M Reduce -0.6%
MKL Markel Group Inc. 9.74% 49,640 $92.8M Reduce -9.0%
ORLY O'reilly Automotive Inc. 8.85% 58,890 $84.4M Reduce -3.4%
AMZN Amazon.com Inc. 8.07% 404,123 $76.9M Reduce -0.6%
CPRT Copart Inc. 6.70% 1,127,823 $63.8M Reduce -1.5%
BRK.B Berkshire Hathaway Inc. Class B 6.36% 113,837 $60.6M Reduce -0.8%
AAPL Apple Inc. 5.81% 249,399 $55.4M Reduce -1.5%
MA Mastercard Inc. Class A 3.78% 65,700 $36.0M Reduce -0.7%
LULU Lululemon Athletica Inc. 3.63% 122,051 $34.5M Reduce -1.0%
LMT Lockheed Martin Corp. 3.45% 73,641 $32.9M Add +2.5%
OLED Universal Display Corp. 2.85% 194,873 $27.2M Reduce -0.9%
WAY Waystar Holding Corp. 2.41% 614,619 $23.0M Add +4.1%
KMX Carmax Inc. 1.86% 227,300 $17.7M Reduce -2.1%
ERII Energy Recovery Inc. 1.78% 1,066,654 $16.9M Reduce -5.7%
AMTM Amentum Holdings Inc. 1.73% 904,162 $16.5M Add +367.3%
V Visa Inc. Class A 1.56% 42,382 $14.9M Reduce -0.8%
SBAC SBA Communications Corp. 1.51% 65,532 $14.4M Reduce -0.8%
BOKF Bok Financial Corporation 1.37% 125,710 $13.1M No change
MPLX MPLX LP 1.03% 183,294 $9.8M No change
AES AES Corp. 0.96% 734,495 $9.1M Reduce -5.1%
ET Energy Transfer LP 0.86% 438,662 $8.2M No change
CTSO Cytosorbents Corp. 0.53% 5,044,918 $5.0M Add +63.1%
BRK.A Berkshire Hathaway Inc. Class A 0.50% 6 $4.8M No change
EPD Enterprise Products Partners 0.44% 123,578 $4.2M No change
KMI Kinder Morgan Inc. 0.44% 145,785 $4.2M Reduce -1.0%
EQIX Equinix Inc. 0.23% 2,741 $2.2M No change
ATOM Atomera Inc. 0.22% 530,300 $2.1M Add +2.7%
AIG American International Group 0.19% 21,210 $1.8M Reduce -0.3%
GOOG Alphabet Inc. Class C 0.18% 10,770 $1.7M No change
STWD Starwood Property Trust Inc. 0.16% 76,393 $1.5M No change
AX Axos Financial Inc. 0.14% 20,790 $1.3M No change
BRSP Brightspire Capital Inc. 0.13% 221,900 $1.2M No change
BSM Black Stone Minerals LP 0.12% 73,900 $1.1M No change
XOM Exxon Mobil Corp. 0.11% 8,754 $1.0M Reduce -0.3%
DBRG Digitalbridge Group Inc. 0.11% 117,565 $1.0M Reduce -6.3%
BAC Bank of America Corp. filed as BANK AMERICA CORP 0.11% 24,740 $1.0M No change
GOOD Gladstone Commercial Corp. 0.11% 66,988 $1.0M No change
VOO Vanguard S&P 500 ETF 0.10% 1,930 $992K No change
PHYS Sprott Physical Gold Trust 0.10% 38,860 $935K No change
PRVA Privia Health Group Inc. 0.09% 36,745 $825K No change
BN Brookfield Corp. 0.08% 15,000 $786K No change
BIP Brookfield Infrastructure Pa 0.07% 23,071 $687K Reduce 0.0%
OPRX Optimizerx Corp. 0.07% 77,260 $669K No change
CCC CCC Intelligent Solutions Ho 0.07% 71,780 $648K Reduce -95.9%
GLD SPDR Gold Shares 0.06% 2,114 $609K No change
WBA Walgreens Boots Alliance Inc. 0.06% 51,508 $575K Add +0.7%
ADPT Adaptive Biotechnologies 0.06% 76,365 $567K No change
COST Costco Wholesale Corp. 0.05% 500 $473K No change
NEWT Newtekone Inc. 0.05% 37,800 $452K No change
COHR Coherent Corp. 0.04% 6,110 $397K No change
VABK Virginia National Bankshares 0.04% 10,800 $390K No change
CCI Crown Castle Inc. 0.04% 3,240 $338K No change
ENVX Enovix Corp. 0.04% 45,750 $336K Add +19.6%
TRGP Targa Resources Corp. 0.03% 1,602 $321K No change
WMT Walmart Inc. 0.03% 3,588 $315K No change
ABBV Abbvie Inc. 0.03% 1,462 $306K No change
LHX L3HARRIS Technologies Inc. 0.03% 1,357 $284K No change
INTC Intel Corp. 0.03% 12,393 $281K Add +8.8%
DIS The Walt Disney Co. filed as DISNEY WALT CO 0.03% 2,646 $261K No change
ANET Arista Networks Inc. 0.03% 3,370 $261K New
PNC PNC Financial Services Group 0.02% 1,266 $223K No change
PCAR Paccar Inc. 0.02% 2,250 $219K No change
BHRB Burke & Herbert Financial SE 0.02% 3,900 $219K No change
RTX RTX Corp. 0.02% 1,634 $216K New
DLTR Dollar Tree Inc. 0.02% 2,860 $215K No change
ABT Abbott Laboratories 0.02% 1,535 $204K New
DENN Denny's Corp. 0.01% 30,690 $113K No change
LUNA Luna Innovations Inc. 0.01% 119,080 $81K No change
TPVG Triplepoint Venture Growth B 0.01% 10,000 $70K No change

Portfolio Sells Q4 2024 → Q1 2025
CCC CCC Intelligent Solutions Ho Reduce -95.9% 0.07% −2.02
LULU Lululemon Athletica Inc. Reduce -1.0% 3.63% −1.20
MSFT Microsoft Corp. Reduce -1.2% 10.65% −1.16
AMZN Amazon.com Inc. Reduce -0.6% 8.07% −1.06
AAPL Apple Inc. Reduce -1.5% 5.81% −0.68
OLED Universal Display Corp. Reduce -0.9% 2.85% −0.09
KMX Carmax Inc. Reduce -2.1% 1.86% −0.08
AES AES Corp. Reduce -5.1% 0.96% −0.06
MGNI Magnite Inc. Sold out 0.00% −0.06
DBRG Digitalbridge Group Inc. Reduce -6.3% 0.11% −0.04
CPRT Copart Inc. Reduce -1.5% 6.70% −0.03
ORCL Oracle Corp. Sold out 0.00% −0.02
BIP Brookfield Infrastructure Pa Reduce 0.0% 0.07% −0.00
XOM Exxon Mobil Corp. Reduce -0.3% 0.11% +0.01
KMI Kinder Morgan Inc. Reduce -1.0% 0.44% +0.02
AIG American International Group Reduce -0.3% 0.19% +0.03
ERII Energy Recovery Inc. Reduce -5.7% 1.78% +0.08
MKL Markel Group Inc. Reduce -9.0% 9.74% +0.10
SBAC SBA Communications Corp. Reduce -0.8% 1.51% +0.13
V Visa Inc. Class A Reduce -0.8% 1.56% +0.18
MA Mastercard Inc. Class A Reduce -0.7% 3.78% +0.21
BRK.B Berkshire Hathaway Inc. Class B Reduce -0.8% 6.36% +1.04
ORLY O'reilly Automotive Inc. Reduce -3.4% 8.85% +1.45
AMT American Tower Corp. Reduce -0.6% 9.94% +1.72

Portfolio Buys Q4 2024 → Q1 2025
AMTM Amentum Holdings Inc. Add +367.3% 1.73% +1.31
CTSO Cytosorbents Corp. Add +63.1% 0.53% +0.24
WAY Waystar Holding Corp. Add +4.1% 2.41% +0.19
ANET Arista Networks Inc. New 0.03% +0.03
RTX RTX Corp. New 0.02% +0.02
ABT Abbott Laboratories New 0.02% +0.02
WBA Walgreens Boots Alliance Inc. Add +0.7% 0.06% +0.01
INTC Intel Corp. Add +8.8% 0.03% +0.01
ENVX Enovix Corp. Add +19.6% 0.04% −0.01
LMT Lockheed Martin Corp. Add +2.5% 3.45% −0.12
ATOM Atomera Inc. Add +2.7% 0.22% −0.39

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 79$820.7MMSFT, MKL, AMZN, ORLY, AMT
Q1 2026 72$820.5MMSFT, MKL, AMZN, AMT, ORLY
Q4 2025 71$921.7MMSFT, MKL, AMZN, AMT, ORLY
Q3 2025 73$960.1MMSFT, MKL, AMZN, ORLY, AMT
Q2 2025 74$972.9MMSFT, MKL, AMT, AMZN, ORLY
Q1 2025 70$953.0MMSFT, AMT, MKL, ORLY, AMZN
Q4 2024 69$976.8MMSFT, MKL, AMZN, AMT, ORLY
Q3 2024 66$991.7MMSFT, AMT, MKL, AMZN, ORLY
Q2 2024 67$1.0BMSFT, MKL, AMT, AMZN, ORLY
Q1 2024 66$1.2BMSFT, MKL, AMT, AMZN, CPRT