Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionMengis Capital Management, Inc.
Latest Disclosed Ownership9,840 shares
Latest Disclosed Value $ 4,715,328
Mengis Capital Management, Inc. reports 1.18% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 12, 2026 - Mengis Capital Management, Inc. filed a 13F-HR form disclosing ownership of 9,840 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $18,026,880 USD as of March 31, 2026. The current value of the position is $16,747,680 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)
2026-05-12 2026-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,840 115 1.18 4,715 -3.54 0.8116
2026-03-05 2025-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,725 35 0.36 4,888 0.35 0.8641
2025-11-12 2025-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,690 -55 -0.56 4,872 2.92 0.9579
2025-07-24 2025-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,745 60 0.62 4,734 -8.24 1.0057
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,685 30 0.31 5,158 17.87 1.0769
2025-02-04 2024-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,655 -193 -1.96 4,376 -3.44 0.8939
2024-11-05 2024-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,848 102 1.05 4,533 14.33 0.8918
2024-08-13 2024-06-30 13F/A-1 BERKSHIRE HATHAWAY INC CL B COM 084670702 9,746 -370 -3.66 3,965 -6.80 0.8036
2024-07-17 2024-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 10,116 0 4,254 0.6064
2024-05-14 2024-03-31 13F/A-1 BERKSHIRE HATHAWAY INC CL B COM 084670702 10,116 285 2.90 4,254 21.31 0.6560
2024-05-07 2024-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,831 0 3,506 0.6572
2024-02-01 2023-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,831 -283 -2.80 3,506 -1.04 0.6572
2023-11-09 2023-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 10,114 -150 -1.46 3,543 1.23 0.7364
2023-08-08 2023-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 10,264 -62 -0.60 3,500 9.79 0.6984
2023-05-05 2023-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 10,326 -2,633 -20.32 3,189 79,600.00 0.6718
2023-02-01 2022-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 12,959 2,799 27.55 4 -99.88 0.8727
2022-11-04 2022-09-30 13F 1 COM 084670702 10,160 202 2.03 3,471 -0.29 0.8222
2022-07-19 2022-06-30 13F 1 COM 084670702 9,958 155 1.58 3,481 -21.69 0.7645
2022-05-02 2022-03-31 13F 1 COM 084670702 9,803 -75 -0.76 4,445 17.16 0.8520
2022-02-04 2021-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,878 250 2.60 3,794 11.75 0.7123
2021-11-03 2021-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,628 75 0.79 3,395 -1.19 0.7131
2021-08-16 2021-06-30 13F/A-1 BERKSHIRE HATHAWAY INC CL B COM 084670702 9,553 187 2.00 3,436 10.41 0.7122
2021-07-21 2021-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,366 0 3,112 0.6882
2021-05-07 2021-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,366 146 1.58 3,112 11.70 0.6893
2021-02-03 2020-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 9,220 1,470 18.97 2,786 23.99 0.6767
2020-10-29 2020-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 7,750 943 13.85 2,247 31.17 0.6164
2020-07-22 2020-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 6,807 1,024 17.71 1,713 9.53 0.5087
2020-05-06 2020-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 5,783 130 2.30 1,564 -18.29 0.5343
2020-02-06 2019-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 5,653 260 4.82 1,914 12.39 0.5272
2019-11-05 2019-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 5,393 625 13.11 1,703 67.62 0.5074
2019-07-18 2019-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,768 470 10.94 1,016 17.73 0.3108
2019-07-18 2019-06-30 13F 1 COM 084670702 200 0 636 0.1945
2019-05-06 2019-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,298 -20 -0.46 863 -2.04 0.4816
2019-05-06 2019-03-31 13F 1 COM 084670702 200 0 602 0.3360
2019-02-06 2018-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,318 -200 -4.43 881 -8.89 0.5587
2019-02-06 2018-12-31 13F 1 COM 084670702 200 0 612 0.3881
2018-11-05 2018-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,518 -50 -1.09 967 13.50 0.5315
2018-11-05 2018-09-30 13F 1 COM 084670702 200 0 640 0.3518
2018-07-24 2018-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,568 -100 -2.14 852 -8.49 0.5038
2018-07-24 2018-06-30 13F 1 COM 084670702 200 0 564 0.3335
2018-04-27 2018-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,668 0 0.00 931 0.65 0.5570
2018-04-27 2018-03-31 13F 1 COM 084670702 200 0 598 0.3577
2018-02-13 2017-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,668 -198 -4.07 925 3.70 0.5602
2018-02-13 2017-12-31 13F 1 COM 084670702 200 0 595 0.3603
2017-11-06 2017-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 4,866 1,350 38.40 892 49.92 0.5976
2017-11-06 2017-09-30 13F 1 COM 084670702 200 0 549 0.3678
2017-08-01 2017-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 3,516 670 23.54 595 25.53 0.4214
2017-08-01 2017-06-30 13F 1 COM 084670702 200 0 509 0.3605
2017-05-11 2017-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 2,846 -50 -1.73 474 0.64 0.3471
2017-05-11 2017-03-31 13F 1 COM 084670702 200 0 499 0.3654
2017-02-07 2016-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 2,896 50 1.76 471 14.60 0.3745
2017-02-07 2016-12-31 13F 1 COM 084670702 200 0 488 0.3880
2016-10-31 2016-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 2,846 -200 -6.57 411 -6.80 0.3421
2016-10-31 2016-09-30 13F 1 COM 084670702 200 0 432 0.3596
2016-08-08 2016-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 3,046 100 3.39 441 5.76 0.3888
2016-08-08 2016-06-30 13F 1 COM 084670702 200 0 433 0.3817
2016-05-11 2016-03-31 13F/A-1 BERKSHIRE HATHAWAY INC CL B COM 084670207 2,946 1,030 53.76 417 65.48 0.3852
2016-05-11 2016-03-31 13F/A-1 1 COM 084670702 200 0 426 0.3935
2016-05-09 2016-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 2,946 417
2016-05-09 2016-03-31 13F 1 COM 084670702 200 426
2016-02-01 2015-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 1,916 330 20.81 252 22.33 0.2198
2016-02-01 2015-12-31 13F 1 COM 084670702 200 0 395 0.3445
2015-11-09 2015-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 1,586 50 3.26 206 -1.44 0.1919
2015-11-09 2015-09-30 13F 1 COM 084670702 200 0 390 0.3634
2015-07-29 2015-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 1,536 100 6.96 209 0.97 0.1747
2015-07-29 2015-06-30 13F 1 COM 084670702 200 0 409 0.3420
2015-04-28 2015-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670207 1,436 1,436 207 0.1807
2015-04-28 2015-03-31 13F 1 COM 084670702 200 -1,236 435 0.3797
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.