Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionJSF Financial, LLC
Latest Disclosed Ownership8,563 shares
Latest Disclosed Value $ 4,103,390
JSF Financial, LLC reports 1.06% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 7, 2026 - JSF Financial, LLC filed a 13F-HR form disclosing ownership of 8,563 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $4,103,390 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 8,473 shares of Berkshire Hathaway Inc.. This represents a change in shares of 1.06% 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)
2026-05-07 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,563 90 1.06 4,103 -3.64 0.8045
2026-02-04 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,473 89 1.06 4,259 1.04 0.8828
2025-11-03 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,384 -2,513 -23.06 4,215 -20.39 0.9349
2025-07-22 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,897 1,102 11.25 5,293 1.48 1.2580
2025-05-07 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,795 313 3.30 5,217 21.36 1.3762
2025-01-29 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,482 -236 -2.43 4,298 -3.89 1.1492
2024-11-12 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,718 1,185 13.89 4,473 28.84 1.3046
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,533 -220 -2.51 3,471 -5.68 1.0635
2024-05-13 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,753 221 2.59 3,681 20.93 1.1524
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,532 13 0.15 3,043 1.98 1.0554
2023-11-08 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,519 -136 -1.57 2,984 1.12 1.1559
2023-08-02 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,655 -234 -2.63 2,951 7.54 1.0442
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,889 470 5.58 2,745 5.54 1.0255
2023-02-10 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,419 250 3.06 2,601 19.21 0.9719
2022-11-10 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,169 340 4.34 2,181 2.06 0.8278
2022-07-28 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,829 431 5.83 2,137 -18.15 0.9682
2022-05-12 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,398 171 2.37 2,611 20.82 1.1111
2022-02-10 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,227 25 0.35 2,161 9.92 1.0514
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,202 195 2.78 1,966 0.98 0.9738
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,007 514 7.92 1,947 17.36 1.1473
2021-05-04 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,493 -620 -8.72 1,659 0.61 1.0415
2021-02-04 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,113 -295 -3.98 1,649 4.57 1.1521
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,408 2 0.03 1,577 19.29 1.2383
2020-07-31 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,406 78 1.06 1,322 -1.34 1.1439
2020-04-29 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,328 4,458 155.33 1,340 106.15 1.3597
2020-02-12 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,870 -220 -7.12 650 1.09 0.6428
2020-02-27 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,090 -38 -1.21 643 -3.60 0.6997
2020-02-27 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,128 345 12.40 667 19.32 0.7246
2020-02-27 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,783 -37 -1.31 559 -2.95 0.6176
2020-02-27 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,820 2,820 576 0.5899
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.