Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionFinancial Security Advisor, Inc.
Latest Disclosed Ownership39,080 shares
Latest Disclosed Value $ 18,727,136
Financial Security Advisor, Inc. reports 4.50% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 4, 2026 - Financial Security Advisor, Inc. filed a 13F-HR form disclosing ownership of 39,080 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $18,727,136 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)
2026-05-04 2026-03-31 13F Berkshire Hathaway Inc Class B Common Stock 084670702 39,080 -1,841 -4.50 18,727 -8.96 3.4396
2026-02-05 2025-12-31 13F Berkshire Hathaway Inc Class B Common Stock 084670702 40,921 -1,319 -3.12 20,569 -3.14 3.9806
2025-11-03 2025-09-30 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,240 -635 -1.48 21,236 1.96 4.5155
2025-07-24 2025-06-30 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,875 -105 -0.24 20,828 -9.01 4.7960
2025-05-01 2025-03-31 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,980 754 1.79 22,890 19.59 5.8055
2025-02-05 2024-12-31 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,226 152 0.36 19,140 -1.16 4.8627
2024-10-30 2024-09-30 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,074 -86 -0.20 19,365 12.91 4.8254
2024-08-05 2024-06-30 13F Berkshire Hathaway Inc Class B Common Stock 084670702 42,160 188 0.45 17,151 -2.83 5.7458
2024-04-18 2024-03-31 13F Berkshire Hathaway Inc Cl B Common Stock 084670702 41,972 27 0.06 17,650 17.98 6.1692
2024-01-24 2023-12-31 13F Berkshire Hathaway Inc Cl B Common Stock 084670702 41,945 454 1.09 14,960 2.93 5.8775
2023-11-08 2023-09-30 13F Berkshire Hathaway Inc Cl B Common Stock 084670702 41,491 41,491 14,534 6.6809
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.