Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionBbr Partners, Llc
Latest Disclosed Ownership18,737 shares
Latest Disclosed Value $ 8,978,770
Bbr Partners, Llc reports 1.79% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 12, 2026 - Bbr Partners, Llc filed a 13F-HR form disclosing ownership of 18,737 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $8,978,770 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3 shares of Berkshire Hathaway Inc.. This represents a change in shares of 1.79% 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)
2026-05-12 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,737 329 1.79 8,979 -2.96 0.5011
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,408 921 5.27 9,253 5.24 0.4965
2025-11-07 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,487 80 0.46 8,791 3.97 0.5069
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,407 -31 -0.18 8,456 -8.96 0.5264
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,438 -67 -0.38 9,287 17.05 0.6559
2025-02-07 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,505 -2,350 -11.84 7,935 -13.18 0.5537
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,855 0 0.00 9,138 13.14 0.6964
2024-08-05 2024-06-30 13F Berkshire Hathaway Inc Del CL COM 084670702 19,855 -2,159 -9.81 8,077 -12.75 0.6617
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,014 3,039 16.02 9,257 36.80 0.7415
2024-02-13 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,975 3,322 21.22 6,768 23.42 0.6918
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,653 1,355 9.48 5,483 12.47 0.6168
2023-08-08 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,298 -112 -0.78 4,876 9.58 0.5395
2023-05-11 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,410 74 0.52 4,449 0.47 0.5128
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,336 328 2.34 4,428 18.40 0.4980
2022-11-10 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,008 -4,709 -25.16 3,740 -26.81 0.4791
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,717 -160 -0.85 5,110 -23.30 0.5971
2022-05-16 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,877 10,755 132.42 6,662 174.38 0.6282
2022-02-08 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,122 -1,209 -12.96 2,428 -4.67 0.2853
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,331 1,279 15.88 2,547 13.81 0.2107
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,052 -922 -10.27 2,238 -2.40 0.1769
2021-05-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,974 -337 -3.62 2,293 6.21 0.1884
2021-02-16 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,311 -7,037 -43.05 2,159 -37.98 0.1789
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,348 1,218 8.05 3,481 28.88 0.2982
2020-08-11 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,130 3,702 32.39 2,701 29.30 0.3409
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,428 738 6.90 2,089 -13.71 0.3109
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,690 1,779 19.96 2,421 30.58 0.2651
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,911 5,109 134.38 1,854 128.89 0.2826
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,802 188 5.20 810 11.57 0.1295
2019-05-10 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,614 -174 -4.59 726 -6.08 0.0943
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,788 -1,968 -34.19 773 -37.26 0.1017
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,756 105 1.86 1,232 16.78 0.1781
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,651 3,145 125.50 1,055 111.00 0.1774
2018-05-09 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,506 237 10.45 500 11.11 0.0894
2018-02-13 2017-12-31 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,269 -131 -5.46 450 2.27 0.0844
2018-02-13 2017-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,269 0 450 0.0801
2018-02-08 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,269 -131 450
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,400 -2,330 -49.26 440 -28.69 0.0937
2015-11-13 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,730 0 0.00 617 -4.19 0.0897
2015-08-07 2015-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,730 3,292 228.93 644 209.62 0.0797
2015-08-04 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,730 644
2015-05-14 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,438 -462 -24.32 208 -13.33 0.0281
2014-08-12 2014-06-30 13F Berkshire Hathaway Inc Del CL B NEW 084670702 1,900 1,900 240 0.0368
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.