Berkshire Hathaway shares owned by Mayo Investment Advisers
Quarter-by-quarter ownership of Berkshire Hathaway (BRK.B) shares owned by Mayo Investment Advisers
from 13F filings
Historical chart of Mayo Investment Advisers investment in Berkshire Hathaway
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Quarterly reported holdings in Berkshire Hathaway by Mayo Investment Advisers
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $2.3M | 4.6k | 502.74 |
| 2025-06-30 | $1.7M | 3.5k | 485.77 |
| 2025-03-31 | $2.2M | 4.2k | 532.58 |
| 2024-12-31 | $2.7M | 6.0k | 453.28 |
| 2022-09-30 | $1.9M | 7.1k | 266.95 |
| 2022-06-30 | $1.9M | 7.1k | 273.05 |
| 2022-03-31 | $2.5M | 7.1k | 352.91 |
| 2021-12-31 | $21M | 7.1k | 2989.93 |
| 2021-09-30 | $1.7M | 6.3k | 272.86 |
| 2021-06-30 | $1.4M | 5.2k | 277.86 |
| 2021-03-31 | $293k | 1.2k | 254.78 |
| 2020-12-31 | $475k | 2.1k | 231.71 |
| 2020-09-30 | $437k | 2.1k | 213.17 |
| 2020-06-30 | $366k | 2.1k | 178.54 |
| 2020-03-31 | $302k | 1.7k | 183.03 |
| 2019-12-31 | $623k | 2.8k | 226.55 |
| 2019-09-30 | $572k | 2.8k | 208.00 |
| 2019-06-30 | $373k | 1.8k | 213.14 |
| 2019-03-31 | $352k | 1.8k | 201.14 |
| 2018-12-31 | $357k | 1.8k | 204.00 |
| 2018-09-30 | $375k | 1.8k | 214.29 |
| 2018-06-30 | $327k | 1.8k | 186.86 |
| 2018-03-31 | $449k | 2.3k | 199.56 |
| 2017-12-31 | $446k | 2.3k | 198.22 |
| 2017-09-30 | $559k | 3.1k | 183.28 |
| 2017-06-30 | $635k | 3.8k | 169.33 |
| 2017-03-31 | $708k | 4.3k | 166.59 |
| 2016-12-31 | $799k | 4.9k | 163.06 |
| 2016-09-30 | $939k | 6.5k | 144.46 |
| 2016-06-30 | $796k | 5.5k | 144.73 |
| 2016-03-31 | $851k | 6.0k | 141.83 |
| 2015-12-31 | $4.2M | 32k | 132.03 |
| 2015-09-30 | $3.9M | 30k | 130.40 |
| 2015-06-30 | $3.9M | 29k | 136.10 |
| 2015-03-31 | $4.2M | 29k | 144.33 |
| 2014-12-31 | $4.8M | 32k | 150.16 |
| 2014-09-30 | $5.3M | 39k | 138.14 |
| 2014-06-30 | $5.5M | 44k | 126.55 |
| 2014-03-31 | $6.6M | 53k | 124.96 |
| 2013-12-31 | $7.6M | 65k | 118.56 |
| 2013-09-30 | $8.3M | 73k | 113.51 |
| 2013-06-30 | $10M | 93k | 111.92 |
| 2013-03-31 | $13M | 125k | 104.20 |
| 2012-12-31 | $12M | 137k | 89.70 |
| 2012-09-30 | $13M | 142k | 88.20 |
| 2012-06-30 | $12M | 139k | 83.33 |
| 2012-03-31 | $14M | 167k | 81.15 |
| 2011-12-31 | $5.8M | 77k | 76.30 |
| 2011-09-30 | $5.9M | 83k | 71.04 |
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