Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionFortune 45 LLC
Latest Disclosed Ownership1,697 shares
Latest Disclosed Value $ 813,202
Fortune 45 LLC reports 64.34% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 28, 2026 - Fortune 45 LLC filed a 13F-HR form disclosing ownership of 1,697 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $813,202 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)
2026-04-28 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,697 -3,062 -64.34 813 -65.61 0.3960
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,759 60 1.28 2,365 0.81 1.1309
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,699 243 5.45 2,346 8.36 1.1911
2025-08-04 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,456 198 4.65 2,165 -4.54 1.2473
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,258 1,032 31.99 2,268 55.06 1.4853
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,226 489 17.87 1,462 16.12 0.9543
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,737 20 0.74 1,260 13.94 0.8917
2024-07-30 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,717 6 0.22 1,105 -3.07 0.8427
2024-04-18 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,711 46 1.73 1,140 20.00 0.9365
2024-02-07 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,665 4 0.15 950 1.93 0.8691
2023-10-17 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,661 1,205 82.76 932 87.90 0.9332
2023-07-31 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,456 94 6.90 496 18.10 0.5060
2023-04-17 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,362 1,362 421 0.4234
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.