Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
AKTIENPREIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionSearle & Co.
Latest Disclosed Ownership9,267 shares
Latest Disclosed Value $ 4,440,746
Searle & Co. ownership in BRKB / Berkshire Hathaway Inc.

On May 8, 2026 - Searle & Co. filed a 13F-HR form disclosing ownership of 9,267 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $16,977,144 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 1, 2017 disclosing 0 shares of Berkshire Hathaway Inc.. The current value of the position is $15,772,434 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)
2026-05-08 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,267 9,267 4,441 1.1166
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -9,367 -100.00 0 -100.00
2025-11-04 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,367 0 0.00 4,709 3.49 1.2475
2025-08-07 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,367 0 0.00 4,550 -8.78 1.2854
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,367 -22 -0.23 4,989 17.23 1.4218
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,389 9,389 4,256 1.2269
2024-05-09 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -11,526 -100.00 0 -100.00
2024-02-06 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,526 11,526 4,111 1.1243
2023-11-03 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -9,326 -100.00 0 -100.00
2023-08-11 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,326 0 0.00 3,282 7.11 1.0166
2023-06-01 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,326 -324 -3.36 3,064 2.82 1.0026
2023-02-06 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,650 0 0.00 2,981 15.64 1.0167
2022-10-27 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,650 0 0.00 2,577 -2.20 0.9902
2022-08-03 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,650 3,000 45.11 2,635 12.27 1.0392
2022-05-10 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,650 0 0.00 2,347 18.06 0.8659
2022-01-19 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,650 -190 -2.78 1,988 6.48 0.7233
2021-10-08 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,867 -1.79 0.7647
2021-07-29 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,901 8.82 0.7775
2021-05-12 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,747 10.15 0.7790
2021-02-04 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,586 8.85 0.7624
2020-10-30 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,457 19.33 0.7938
2020-08-03 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,221 -2.40 0.7083
2020-05-12 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,251 -19.24 0.8874
2020-01-21 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 0 0.00 1,549 8.85 0.8527
2019-10-22 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,840 -4 -0.06 1,423 -2.47 0.8396
2019-07-17 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,844 0 0.00 1,459 6.11 0.8871
2019-04-22 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,844 -10 -0.15 1,375 -1.72 0.8570
2019-02-12 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 0 0.00 1,399 -4.70 0.9838
2018-10-16 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 6,854 1,468 0.8607
2018-07-19 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -6,854 -100.00 0 -100.00
2018-04-25 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 0 0.00 1,367 0.59 0.8892
2018-01-17 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 0 0.00 1,359 8.20 0.8533
2017-10-27 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 6,854 1,256 0.8305
2017-07-19 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -6,854 -100.00 0 -100.00
2017-05-01 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 0 0.00 1,142 2.24 0.8007
2017-02-24 2016-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 0 0.00 1,117 13.86 0.9266
2017-01-09 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,506 2,527
2016-10-11 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,854 6,854 0.00 981 0.8525
2016-04-12 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -6,700 -100.00 0 -100.00
2016-01-11 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,700 0 0.00 876 0.23 0.8402
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,700 0 0.00 874 -4.06 0.8981
2015-09-29 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B CL B NEW 084670702 6,700 0 0.00 911 -5.69 0.7597
2015-09-29 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B CL B NEW 084670702 6,700 0 0.00 966 -3.98 0.8311
2015-09-28 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B CL B NEW 084670702 6,700 6,700 1,006 0.8512
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.