Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionCornerstone Planning Group LLC
Latest Disclosed Ownership1,191 shares
Latest Disclosed Value $ 554,435
Cornerstone Planning Group LLC reports 33.22% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 6, 2026 - Cornerstone Planning Group LLC filed a 13F-HR form disclosing ownership of 1,191 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $2,181,912 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 894 shares of Berkshire Hathaway Inc.. This represents a change in shares of 33.22% during the quarter. The current value of the position is $2,027,082 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)
2026-05-06 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 1,191 297 33.22 554 30.97 0.0740
2026-02-02 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 894 -6 -0.67 423 -1.63 0.0660
2025-11-04 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 900 62 7.40 431 10.82 0.0690
2025-08-11 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 838 -61 -6.79 389 -17.97 0.0794
2025-04-30 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 899 64 7.66 474 19.44 0.1133
2025-01-29 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 835 21 2.58 396 7.03 0.0974
2024-11-05 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 814 15 1.88 370 12.12 0.0978
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 799 49 6.53 331 10.00 0.0948
2024-05-07 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 750 77 11.44 301 25.00 0.0935
2024-02-12 2023-12-31 13F BERKSHIRE HATHAWAY CLASS B Common Stock 084670702 673 3 0.45 240 2.56 0.0793
2023-11-08 2023-09-30 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 670 9 1.36 235 4.00 0.0894
2023-08-15 2023-06-30 13F BERKSHIRE HATHAWAY INC COM CL B COM CL B 084670702 661 3 0.46 225 12.50 0.0891
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC COM CL B COM CL B 084670702 658 658 201 0.0841
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.