Berkshire Hathaway Inc.
PL ˙ WSE
1.702,00 PLN 0,00 (0,00%)
2026-05-07
DEL PRIS
SecurityPL:BRKB / Berkshire Hathaway Inc.
InstitutionConning Inc.
Latest Disclosed Ownership8,351 shares
Latest Disclosed Value $ 4,001,799
Conning Inc. reports 15.00% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 30, 2026 - Conning Inc. filed a 13F-HR form disclosing ownership of 8,351 shares of Berkshire Hathaway Inc. (PL:BRKB) valued at $15,299,032 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 9,825 shares of Berkshire Hathaway Inc.. This represents a change in shares of -15.00% during the quarter. The current value of the position is $14,213,402 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)
2026-04-30 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,351 -1,474 -15.00 4,002 -18.98 0.1330
2026-02-05 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,825 -1,562 -13.72 4,939 -13.73 0.1654
2025-10-28 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,387 0 0.00 5,725 3.49 0.1903
2025-07-24 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,387 -396 -3.36 5,531 -11.86 0.1900
2025-04-29 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,783 -46 -0.39 6,275 17.05 0.2195
2025-01-28 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,829 -581 -4.68 5,362 -6.13 0.1879
2024-10-29 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,410 -155 -1.23 5,712 11.74 0.1886
2024-07-26 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,565 327 2.67 5,111 -0.68 0.1840
2024-04-26 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,238 -310 -2.47 5,146 14.99 0.1687
2024-01-30 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,548 10 0.08 4,475 1.89 0.1557
2023-10-26 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,538 -593 -4.52 4,392 -1.90 0.1601
2023-07-21 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,131 -1,685 -11.37 4,478 -2.12 0.1498
2023-04-27 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,816 -158 -1.06 4,575 -1.10 0.1529
2023-02-08 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,974 -173 -1.14 4,625 14.34 0.1504
2022-10-31 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,147 -1,960 -11.46 4,045 -13.40 0.1436
2022-07-20 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,107 -103 -0.60 4,671 -23.10 0.1400
2022-05-02 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,210 -1,312 -7.08 6,074 9.68 0.1654
2022-01-27 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,522 -615 -3.21 5,538 6.03 0.1477
2021-11-05 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,137 -3,490 -15.42 5,223 -16.94 0.1499
2021-07-29 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,627 -3,023 -11.79 6,288 -4.04 0.1822
2021-04-23 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 25,650 -2,375 -8.47 6,553 0.85 0.1971
2021-01-28 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,025 -530 -1.86 6,498 6.86 0.2063
2020-10-21 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,555 389 1.38 6,081 20.94 0.2141
2020-08-07 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,166 -1,159 -3.95 5,028 -6.21 0.1867
2020-04-29 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,325 -593 -1.98 5,361 -20.88 0.2282
2020-01-29 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,918 -660 -2.16 6,776 6.52 0.2221
2019-10-30 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 30,578 -449 -1.45 6,361 -3.83 0.2203
2019-07-25 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,027 -5,210 -14.38 6,614 -9.15 0.2188
2019-04-22 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,237 -4,062 -10.08 7,280 -11.52 0.2276
2019-01-29 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 40,299 -5,423 -11.86 8,228 -15.96 0.2799
2018-10-26 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,722 -2,640 -5.46 9,790 8.45 0.2903
2018-07-25 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 48,362 -1,420 -2.85 9,027 -9.10 0.2753
2018-05-03 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 49,782 -270 -0.54 9,931 0.10 0.3197
2018-01-30 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,052 -660 -1.30 9,921 6.71 0.3275
2017-10-20 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,712 -390 -0.76 9,297 7.42 0.3164
2017-08-03 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,102 -350 -0.68 8,655 0.92 0.3142
2017-04-27 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,452 -18,713 -26.67 8,576 -25.00 0.3166
2017-02-02 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 70,165 22,788 48.10 11,435 67.06 0.4560
2016-10-25 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 47,377 980 2.11 6,845 1.89 0.2728
2016-07-26 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,397 450 0.98 6,718 3.05 0.2774
2016-04-26 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,947 290 0.64 6,519 8.13 0.2736
2016-02-04 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,657 -552 -1.19 6,029 0.05 0.2578
2015-10-23 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,209 -4,470 -8.82 6,026 -12.64 0.2647
2015-08-03 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,679 -530 -1.03 6,898 -6.66 0.2831
2015-04-24 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,209 -190 -0.37 7,390 -4.25 0.3142
2015-02-13 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,399 -1,330 -2.52 7,718 5.96 0.3768
2014-11-07 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 52,729 -650 -1.22 7,284 7.82 0.3816
2014-07-25 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 53,379 -3,000 -5.32 6,756 -4.12 0.3590
2014-04-25 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,379 2,510 4.66 7,046 10.32 0.4137
2014-02-04 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 53,869 9,320 20.92 6,387 26.30 0.3958
2013-11-04 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,549 1,660 3.87 5,057 5.35 0.3905
2013-08-13 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 42,889 42,889 4,800 0.3965
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.