Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership564,071 shares
Latest Disclosed Value $ 270,302,629
Mercer Global Advisors Inc /adv reports 2.89% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 564,071 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $1,033,378,072 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 548,252 shares of Berkshire Hathaway Inc.. This represents a change in shares of 2.89% during the quarter. The current value of the position is $960,048,842 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)
2026-05-15 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 564,071 15,819 2.89 270,303 -1.92 0.4000
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 548,252 50,292 10.10 275,585 10.08 0.4201
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 497,960 43,312 9.53 250,343 13.36 0.4178
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 454,648 42,050 10.19 220,844 0.53 0.4498
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 412,598 -3,724 -0.89 219,690 16.42 0.5040
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 416,322 416,322 188,711 0.4604
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -314,006 -100.00 0 -100.00
2024-02-15 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 314,006 22,845 7.85 112 9.90 0.3369
2023-11-15 2023-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 291,161 22,616 8.42 102 10.99 0.3873
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 291,161 22,616 102 0.3872
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 268,545 33,169 14.09 92 26.39 0.3635
2023-05-16 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 235,376 3,720 1.61 73 1.41 0.3301
2023-02-09 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 231,656 -21,369 -8.45 72 -99.89 0.3584
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 253,025 -85,364 -25.23 67,563 -26.87 0.4010
2022-08-10 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 338,389 16,791 5.22 92,387 -18.60 0.5655
2022-05-10 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 321,598 33,483 11.62 113,495 31.75 0.6684
2022-02-04 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 288,115 17,862 6.61 86,146 16.79 0.5319
2021-11-10 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 270,253 7,539 2.87 73,763 1.03 0.5152
2021-08-10 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 262,714 18,342 7.51 73,013 16.95 0.5615
2021-08-10 2021-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 244,372 70,704 40.71 62,430 55.04 0.5679
2021-05-11 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 234,039 60,371 59,790 0.5724
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 173,668 27,192 18.56 40,268 29.10 0.5029
2020-12-10 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 146,476 -4,606 -3.05 31,191 15.65 0.4692
2020-08-10 2020-06-30 13F BERKSHIRE HATHAWAY DEL CL B NEW 084670702 151,082 -6,186 -3.93 26,970 -6.20 0.4897
2020-05-18 2020-03-31 13F BERKSHIRE HATHAWAY DEL CL B NEW 084670702 157,268 1,083 0.69 28,753 -18.72 0.6328
2020-02-13 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COM 084670702 156,185 9,804 6.70 35,376 16.18 0.7064
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COM 084670702 146,381 5,998 4.27 30,450 1.75 0.7161
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COM 084670702 140,383 19,162 15.81 29,925 22.89 0.7932
2019-04-23 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B COM 084670702 121,221 121,221 24,352 0.8758
2019-04-12 2019-03-31 13F BERKSHIRE HATHAWAY INC D COM 084670702 106,019 21,647 1.1536
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.