Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionArtemis Wealth Advisors, LLC
Latest Disclosed Ownership11,042 shares
Latest Disclosed Value $ 5,291,326
Artemis Wealth Advisors, LLC reports 10.51% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Artemis Wealth Advisors, LLC filed a 13F-HR form disclosing ownership of 11,042 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $5,291,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,992 shares of Berkshire Hathaway Inc.. This represents a change in shares of 10.51% 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 B NEW 084670702 11,042 1,050 10.51 5,291 5.36 0.7990
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,992 -500 -4.77 5,022 -4.78 0.7228
2025-11-12 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,492 0 0.00 5,275 3.49 0.5741
2025-08-05 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,492 0 0.00 5,097 -8.79 0.5773
2025-04-30 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,492 0 0.00 5,588 17.50 1.1717
2025-02-04 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,492 4,100 64.14 4,756 61.68 0.8480
2024-10-31 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,392 0 0.00 2,942 13.12 0.2932
2024-08-05 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,392 300 4.92 2,600 1.52 0.2446
2024-04-26 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,092 -300 -4.69 2,562 12.37 0.2588
2024-02-09 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,392 0 0.00 2,280 1.79 0.4371
2023-10-18 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 2,239 2.75 0.4189
2023-08-15 2023-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 2,180 10.44 0.3972
2023-07-13 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 2,180 0.3972
2023-05-15 2023-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 1,974 -0.05 0.5075
2023-04-28 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 2 0.5076
2023-08-21 2022-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B 084670702 6,392 0 0.00 1,974 15.71 0.5999
2023-01-23 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 6,392 0 2 0.5998
2023-08-21 2022-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B 084670702 6,392 1,329 26.25 1,707 23.44 0.4473
2022-11-08 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 6,392 1,329 1,707 0.4474
2023-08-21 2022-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,063 -25 -0.49 1,382 -23.01 0.3783
2022-08-02 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,063 -25 1,382 0.3780
2023-08-21 2022-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,088 0 0.00 1,796 18.01 0.2973
2022-04-22 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,088 0 1,796 0.2974
2023-09-11 2021-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,088 -1,454 -22.23 1,521 -14.79 0.1885
2023-02-17 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,088 -1,454 2 0.1885
2023-09-11 2021-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 0.00 1,786 -1.82 0.2486
2023-02-17 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 2 0.2486
2023-09-11 2021-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 0.00 1,818 8.80 0.2591
2023-02-17 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 2 0.2591
2023-09-11 2021-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 0.00 1,671 10.22 0.2616
2023-02-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 2 0.2616
2023-09-05 2020-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 0.00 1,517 8.83 0.2416
2023-02-17 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 2 0.2417
2023-09-05 2020-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 0.00 1,393 19.37 0.3406
2023-02-17 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 0 1 0.3406
2023-09-05 2020-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 150 2.35 1,168 -0.09 0.4009
2023-02-17 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,542 150 1 0.4010
2023-09-05 2020-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 1,169 -19.28 0.4996
2023-02-17 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 1 0.4998
2023-09-01 2019-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 1,448 8.88 0.5224
2023-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 1,448 0.5225
2023-09-01 2019-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 1,330 -2.42 0.5824
2023-02-14 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 1,330 0.5825
2023-09-01 2019-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 0.00 1,363 6.07 0.6952
2023-02-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 0 1,363 0.6954
2023-09-01 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 4,763 292.39 1,284 286.75 0.6816
2023-02-14 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 6,392 4,763 1,284 0.6815
2023-08-29 2018-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 0.00 333 -4.60 0.1680
2023-02-09 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 333 0.1682
2023-08-29 2018-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 0.00 349 14.47 0.1896
2023-02-09 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 349 0.1897
2023-08-29 2018-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 0.00 304 -6.17 0.2219
2023-02-09 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 304 0.2219
2023-08-29 2018-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 0.00 325 0.62 0.2531
2023-02-09 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 0 325 0.2531
2023-08-29 2017-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 1,329 443.00 323 496.30 0.2736
2023-02-09 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 1,629 1,329 323 0.2736
2023-08-29 2017-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 0.00 55 8.00 0.0482
2023-02-09 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 55 0.0482
2023-08-29 2017-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 0.00 51 0.00 0.0471
2023-02-09 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 51 0.0473
2023-08-29 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 0.00 50 2.04 0.0407
2023-02-09 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 0 50 0.0407
2023-02-09 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670902 300 300 49 0.0462
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.