Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionFSM Wealth Advisors, LLC
Latest Disclosed Ownership9,029 shares
Latest Disclosed Value $ 4,326,746
FSM Wealth Advisors, LLC reports 3.20% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 27, 2026 - FSM Wealth Advisors, LLC filed a 13F-HR form disclosing ownership of 9,029 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $4,326,746 USD as of March 31, 2026.

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)
2026-04-27 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,029 -298 -3.20 4,327 -7.72 0.5559
2026-01-23 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,327 -561 -5.67 4,688 -5.69 0.6412
2025-10-17 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,888 58 0.59 4,971 5.79 0.7032
2025-07-31 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,830 2,191 28.68 4,699 15.51 0.7642
2025-04-28 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,639 899 13.34 4,068 30.43 0.9147
2025-01-24 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,740 358 5.61 3,119 6.20 0.7635
2024-10-30 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,382 214 3.47 2,937 17.06 0.7794
2024-07-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,168 -53 -0.85 2,509 -4.09 0.8412
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,221 -49 -0.78 2,616 16.99 0.9290
2024-05-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,270 86 1.39 2,236 3.23 0.9510
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,184 34 0.55 2,166 2.61 1.0898
2023-07-12 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,150 132 2.19 2,112 13.62 1.0594
2023-04-24 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,018 886 17.26 1,858 17.22 1.0784
2023-01-19 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,132 -42 -0.81 1,585 14.69 1.1275
2022-10-24 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,174 162 3.23 1,382 -5.67 1.1482
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,012 5,012 1,465 1.4504
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.