Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionIron Financial, LLC
Latest Disclosed Ownership1,635 shares
Latest Disclosed Value $ 783,492
Iron Financial, LLC reports 5.14% increase in ownership of BRKB / Berkshire Hathaway Inc.

On April 27, 2026 - Iron Financial, LLC filed a 13F-HR form disclosing ownership of 1,635 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $2,995,320 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2023 disclosing 0 shares of Berkshire Hathaway Inc.. This represents a change in shares of 5.14% during the quarter. The current value of the position is $2,782,770 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)
2026-04-27 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,635 80 5.14 783 0.26 0.2619
2026-01-22 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,555 -1 -0.06 782 -0.13 0.3593
2025-10-24 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,556 -2 -0.13 782 3.44 0.3746
2025-07-25 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,558 301 23.95 757 13.00 0.3923
2025-04-25 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,257 244 24.09 669 45.75 0.3753
2025-01-22 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,013 0 0.00 459 -1.50 0.2580
2024-10-28 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,013 -1,187 -53.95 466 -47.87 0.2537
2024-07-29 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,200 0 0.00 895 -3.35 0.5019
2024-04-23 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,200 58 2.71 925 21.23 0.5157
2024-01-19 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,142 -500 -18.93 764 -17.51 0.4335
2023-10-31 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,642 481 22.26 925 25.68 0.5372
2023-07-24 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,161 123 6.04 737 17.01 0.3956
2023-04-26 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,038 145 7.66 629 7.71 0.3455
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,893 -6 -0.32 585 15.19 0.3357
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,899 334 21.34 507 18.74 0.2784
2022-07-27 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,565 329 26.62 427 -2.06 0.2236
2022-05-04 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,236 82 7.11 436 26.38 0.2009
2022-02-11 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,154 104 9.90 345 20.21 0.1539
2021-11-02 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,050 89 9.26 287 7.49 0.1377
2021-07-28 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 961 961 267 0.1249
2019-08-02 2019-06-30 13F brkb US Equities 084670207 0 -1,409 -100.00 0 -100.00
2019-05-08 2019-03-31 13F brkb US Equities 084670207 1,409 1,409 283 0.1790
2017-07-31 2017-06-30 13F BERKSHIRE HATHAWAY INC CL US Equities 084670207 0 -1,765 -100.00 0 -100.00
2017-05-02 2017-03-31 13F BERKSHIRE HATHAWAY INC CL US Equities 084670207 1,765 1,765 294 0.2119
2016-04-11 2016-03-31 13F BERKSHIRE HATHAWAY INC CL US Equities 084670702 0 -1,765 -100.00 0 -100.00
2016-01-19 2015-12-31 13F BERKSHIRE HATHAWAY INC CL US Equities 084670702 1,765 1,765 233 0.1982
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.