Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership97,523 shares
Latest Disclosed Value $ 46,733,022
OMERS ADMINISTRATION Corp reports 28.04% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 97,523 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $178,662,136 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 76,164 shares of Berkshire Hathaway Inc.. This represents a change in shares of 28.04% during the quarter. The current value of the position is $165,984,146 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 97,523 21,359 28.04 46,733 22.07 0.3005
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 76,164 951 1.26 38,284 1.25 0.2729
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 75,213 599 0.80 37,813 4.32 0.2708
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 74,614 1,300 1.77 36,245 -7.17 0.2847
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 73,314 -2,064 -2.74 39,046 14.28 0.3416
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 75,378 -1,992 -2.57 34,167 -4.05 0.2988
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 77,370 -500 -0.64 35,610 12.42 0.3278
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 77,870 77,870 31,678 0.3051
2021-11-17 2021-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 0
2021-11-17 2021-06-30 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -33,728 -100.00 0 -100.00
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -33,728 0
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,728 0 0.00 8,616 10.16 0.1365
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,728 -165,900 -83.10 7,821 -81.60 0.1411
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 199,628 -24,272 -10.84 42,509 6.36 0.8981
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 223,900 223,900 39,968 1.3264
2020-05-15 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -501,553 -100.00 0 -100.00
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 501,553 -490,981 -49.47 113,602 -44.98 1.3109
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 992,534 114,193 13.00 206,467 8.79 2.0571
2019-08-08 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 878,341 260,969 42.27 189,777 47.67 1.9745
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 617,372 1,320 0.21 128,516 2.17 1.4790
2019-02-14 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 616,052 19,092 3.20 125,785 -1.59 1.6906
2018-11-14 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 596,960 2,380 0.40 127,815 15.17 1.2237
2018-08-09 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 594,580 0 0.00 110,978 -6.43 1.0251
2018-05-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 594,580 -36,300 -5.75 118,607 -5.15 1.1535
2018-05-14 2017-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 630,880 37,000 6.23 125,053 14.86 1.2487
2018-02-13 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 630,880 37,000 125,053
2018-05-14 2017-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 593,880 -13,165 -2.17 108,870 5.89 1.2043
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 593,880 -13,165 108,870
2017-08-08 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 607,045 86,305 16.57 102,815 18.45 1.2986
2017-05-10 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 520,740 109,340 26.58 86,797 29.45 1.1555
2017-02-09 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 411,400 -370 -0.09 67,050 12.71 1.2482
2016-11-14 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 411,770 8,970 2.23 59,488 2.00 1.0579
2016-08-11 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 402,800 -87,600 -17.86 58,321 -16.18 1.2004
2016-05-12 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 490,400 490,400 0.00 69,578 1.5431
2016-02-11 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 0 0 0.0000
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -117,000 -100.00 0 -100.00
2015-08-11 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 117,000 200 0.17 15,925 -5.53 0.6324
2015-05-12 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 116,800 5,500 4.94 16,857 0.87 0.6322
2015-02-11 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 111,300 14,400 14.86 16,712 24.85 0.5056
2014-11-10 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 96,900 38,300 65.36 13,386 80.50 0.3989
2014-08-11 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 58,600 46,400 380.33 7,416 412.86 0.2408
2014-02-13 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,200 12,200 1,446 0.0531
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.