Berkshire Hathaway Inc.
DE ˙ XTRA
408,10 € ↓ -2,80 (-0,68%)
2026-06-04
DEL PRIS
SecurityDE:BRYN / Berkshire Hathaway Inc.
InstitutionRosenberg Matthew Hamilton
Latest Disclosed Ownership2,059 shares
Latest Disclosed Value $ 986,673
Rosenberg Matthew Hamilton reports 1.20% decrease in ownership of BRYN / Berkshire Hathaway Inc.

On April 6, 2026 - Rosenberg Matthew Hamilton filed a 13F-HR form disclosing ownership of 2,059 shares of Berkshire Hathaway Inc. (DE:BRYN) valued at $852,323 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 2,084 shares of Berkshire Hathaway Inc.. This represents a change in shares of -1.20% during the quarter. The current value of the position is $840,278 USD.

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)
2026-04-06 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 2,059 -25 -1.20 987 -5.83 0.2022
2026-01-05 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 2,084 125 6.38 1,048 6.40 0.2170
2025-11-10 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,959 70 3.71 985 7.31 0.2129
2025-07-28 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,889 28 1.50 918 -7.47 0.2134
2025-04-28 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,861 4 0.22 991 17.84 0.2485
2025-01-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,857 6 0.32 842 -1.18 0.2187
2024-10-28 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,851 35 1.93 852 15.78 0.2229
2024-07-26 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,816 69 3.95 736 0.14 0.2173
2024-04-22 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,747 -65 -3.59 734 13.62 0.2121
2024-01-16 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,812 -7 -0.38 646 1.41 0.1988
2023-10-11 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,819 74 4.24 637 7.06 0.2123
2023-07-26 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,745 -142 -7.53 595 2.23 0.2012
2023-04-17 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,887 -52 -2.68 583 -2.68 0.1880
2023-01-19 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,939 24 1.25 599 17.03 0.2029
2022-10-21 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,915 266 16.13 511 11.57 0.1976
2022-07-15 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,649 -2 -0.12 458 -21.44 0.1727
2022-04-14 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Stock 084670702 1,651 -15 -0.90 583 17.07 0.2039
2022-01-20 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,666 88 5.58 498 15.55 0.1773
2021-10-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,578 88 5.91 431 4.11 0.1703
2021-07-26 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,490 84 5.97 414 15.32 0.2155
2021-04-30 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,406 -84 -5.64 359 4.06 0.2048
2021-02-03 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,490 50 3.47 345 12.38 0.2153
2020-10-16 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,440 0 0.00 307 19.46 0.2255
2020-08-04 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,440 188 15.02 257 12.23 0.2047
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,252 1,252 229 0.2278
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.