Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionBerkshire Bank
Latest Disclosed Ownership919 shares
Latest Disclosed Value $ 440,384
Berkshire Bank reports 9.81% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 28, 2026 - Berkshire Bank filed a 13F-HR form disclosing ownership of 919 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $440,384 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,019 shares of Berkshire Hathaway Inc.. This represents a change in shares of -9.81% 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)
2026-04-28 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 919 -100 -9.81 440 -14.06 0.0903
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,019 0 0.00 512 0.00 0.1039
2025-10-24 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,019 89 9.57 512 13.53 0.1103
2025-07-09 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 930 0 0.00 452 -8.89 0.1031
2025-04-17 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 930 50 5.68 495 24.37 0.1207
2025-01-22 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 880 -155 -14.98 399 -16.39 0.0928
2024-10-18 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,035 145 16.29 476 31.49 0.1117
2024-07-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 890 0 0.00 362 -3.21 0.0910
2024-04-24 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 890 275 44.72 374 70.78 0.0930
2024-01-22 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 615 0 0.00 219 1.86 0.0581
2023-11-01 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 615 -30 -4.65 215 -1.83 0.0620
2023-07-12 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 645 645 220 0.0607
2023-04-11 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -715 -100.00 0 -100.00
2023-02-02 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 715 -107 -13.02 221 0.46 0.0675
2022-11-07 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 822 0 0.00 219 -2.23 0.0670
2022-07-15 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 822 0 0.00 224 -22.76 0.0653
2022-04-21 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 822 0 0.00 290 17.89 0.0689
2022-01-28 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 822 822 246 0.0545
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.