Berkshire Hathaway Inc.
GB ˙ LSE ˙ US0846701086
SecurityGB:0HN0 / Berkshire Hathaway Inc.
InstitutionAvenir Corp
Latest Disclosed Ownership6 shares
Latest Disclosed Value $ 4,308,840
Avenir Corp ownership in 0HN0 / Berkshire Hathaway Inc.

On May 14, 2026 - Avenir Corp filed a 13F-HR form disclosing ownership of 6 shares of Berkshire Hathaway Inc. (GB:0HN0) valued at $4,308,840 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 109,748 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.00% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,309 -4.86 0.5251
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,529 0.07 0.4914
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,525 3.50 0.4713
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,373 -8.73 0.4494
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,791 17.26 0.5027
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,086 -1.50 0.4183
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 4,147 12.90 0.4182
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,673 -3.49 0.3568
2024-05-16 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,807 16.93 0.3258
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,256 2.10 0.2816
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,189 2.64 0.2985
2023-08-11 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,107 11.21 0.2727
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,794 -0.68 0.2643
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,812 15.29 0.2819
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,439 -0.61 0.2586
2022-08-11 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,454 -22.68 0.2345
2022-05-16 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 3,174 17.38 0.2536
2022-02-16 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,704 9.56 0.2083
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,468 -1.75 0.2074
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,512 8.56 0.1996
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,314 10.88 0.2001
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,087 8.70 0.1992
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,920 19.70 0.2004
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,604 -1.72 0.1827
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,632 -19.92 0.2211
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 2,038 8.93 0.2071
2019-11-13 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,871 -2.04 0.1960
2019-08-12 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,910 5.70 0.1991
2019-05-14 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,807 -1.58 0.1916
2019-02-13 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,836 -4.37 0.2293
2018-11-14 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,920 13.48 0.2110
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,692 -5.74 0.1933
2018-05-14 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 0 0.00 1,795 0.50 0.1958
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 6 -7 -53.85 1,786 -50.00 0.1650
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 0.00 3,572 7.88 0.3071
2017-08-14 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 0.00 3,311 1.94 0.2921
2017-05-10 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 -4 -23.53 3,248 -21.73 0.2851
2017-02-14 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 17 0 0.00 4,150 12.89 0.3620
2016-11-14 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 17 -1 -5.56 3,676 -5.89 0.3170
2016-08-12 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 0 0.00 3,906 1.67 0.3197
2016-05-13 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 0 0.00 3,842 7.92 0.3248
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 0 0.00 3,560 1.31 0.2868
2015-11-13 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 0 0.00 3,514 -4.69 0.2923
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 0 0.00 3,687 -5.82 0.2728
2015-05-14 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 -1 -5.26 3,915 -8.83 0.2843
2015-02-13 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 4,294 9.23 0.3247
2014-11-17 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 3,931 8.95 0.3283
2014-08-13 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 3,608 1.35 0.2992
2014-05-14 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 3,560 5.33 0.3113
2014-02-13 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 3,380 4.39 0.3056
2013-11-14 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 0 0.00 3,238 1.09 0.3125
2013-08-15 2013-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 19 3,203 0.3335
2013-08-14 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 19 3,203 0.3335
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.