Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNomura Asset Management Co Ltd
Latest Disclosed Ownership505,095 shares
Latest Disclosed Value $ 242,041,524
Nomura Asset Management Co Ltd reports 2.50% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 11, 2026 - Nomura Asset Management Co Ltd filed a 13F-HR form disclosing ownership of 505,095 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $242,041,524 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 492,796 shares of Berkshire Hathaway Inc.. This represents a change in shares of 2.50% during the quarter.

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)
2026-05-11 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 505,095 12,299 2.50 242,042 -2.29 0.3907
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 492,796 16,585 3.48 247,704 3.46 0.6270
2025-11-12 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 476,211 3,578 0.76 239,410 4.28 0.6249
2025-08-11 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 472,633 30,571 6.92 229,591 -2.48 0.6296
2025-05-12 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 442,062 23,058 5.50 235,433 23.96 0.7205
2025-02-12 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 419,004 6,071 1.47 189,926 -0.07 0.5714
2024-11-15 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 412,933 25,101 6.47 190,057 20.46 0.5859
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 387,832 11,558 3.07 157,770 -0.29 0.5377
2024-05-13 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 376,274 4,180 1.12 158,231 19.23 0.5743
2024-02-09 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 372,094 13,542 3.78 132,711 5.66 0.5484
2023-11-03 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 358,552 -3,019 -0.83 125,601 1.87 0.5887
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 361,571 -812 -0.22 123,296 10.19 0.5679
2025-01-10 2023-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 362,383 51 0.01 111,893 -0.03 0.5879
2023-05-11 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 362,383 51 111,893 0.5879
2025-01-10 2022-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 362,332 15,858 4.58 111,924 20.98 0.6502
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 362,332 15,858 111,924 0.6502
2025-01-10 2022-09-30 13F/A-3 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 346,474 -7,930 -2.24 92,515 943.72 0.5890
2022-11-14 2022-09-30 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 346,474 -7,930 92,515 0.5890
2022-11-10 2022-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 346,474 -7,930 92,515 0.5890
2022-11-10 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 346,474 -7,930 92,515 0.3723
2025-01-10 2022-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 354,404 41,660 13.32 8,864 -91.97 0.0554
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 354,404 41,660 96,759 0.5969
2025-01-10 2022-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 312,744 769 0.25 110,370 18.32 0.6005
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 312,744 769 110,370 0.6005
2025-01-10 2021-12-31 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 311,975 19,474 6.66 93,281 16.84 0.4712
2022-02-01 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 311,975 19,474 93,281 0.4712
2025-01-10 2021-09-30 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 292,501 2,995 1.03 79,835 -0.78 0.4505
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 292,501 2,995 79,835 0.4506
2025-01-10 2021-06-30 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 289,506 13,532 4.90 80,460 14.12 0.4659
2021-08-06 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 289,506 13,532 80,460 0.4659
2025-01-10 2021-03-31 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 275,974 -3,284 -1.18 70,503 8.88 0.4493
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 275,974 -3,284 70,503 0.4493
2025-01-10 2020-12-31 13F/A-2 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 279,258 10,725 3.99 64,752 13.24 0.4356
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 279,258 10,725 64,752 0.4356
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 268,533 -456 -0.17 57,181 19.08 0.4390
2020-08-13 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 268,989 6,345 2.42 48,017 -0.01 0.4063
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 262,644 15,829 6.41 48,020 -14.10 0.4962
2020-02-13 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 246,815 2,521 1.03 55,904 10.01 0.5009
2019-11-13 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 244,294 11,218 4.81 50,818 2.28 0.4853
2019-08-13 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 233,076 -4,204 -1.77 49,685 4.23 0.4909
2019-05-10 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 237,280 2,598 1.11 47,667 -0.52 0.4685
2019-05-10 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 237,280 2,598 47,667
2019-02-12 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 234,682 14,770 6.72 47,917 1.77 0.5355
2018-11-07 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 219,912 2,026 0.93 47,085 15.78 0.4568
2018-08-03 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 217,886 7,230 3.43 40,668 -3.22 0.4222
2018-05-14 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 210,656 7,086 3.48 42,021 4.14 0.4589
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 203,570 5,368 2.71 40,352 11.06 0.4670
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 198,202 5,542 2.88 36,335 11.35 0.4692
2017-08-14 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 192,660 3,535 1.87 32,631 3.51 0.4390
2017-06-28 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 189,125 11,357 6.39 31,524 8.79 0.4440
2017-05-12 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 189,125 31,524
2017-02-14 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 177,768 2,200 1.25 28,978 14.24 0.5220
2016-11-10 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 175,568 3,560 2.07 25,365 1.85 0.4550
2016-08-12 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 172,008 860 0.50 24,905 2.56 0.4659
2016-05-13 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 171,148 4,290 2.57 24,283 10.22 0.4626
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 166,858 2,220 1.35 22,032 2.62 0.4262
2015-11-13 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 164,638 4,888 3.06 21,469 -1.26 0.4301
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 159,750 -4,310 -2.63 21,743 -8.17 0.4024
2015-05-13 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 164,060 22,820 16.16 23,677 10.65 0.4220
2015-02-13 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 141,240 -4,360 -2.99 21,398 6.64 0.3739
2014-11-14 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 145,600 9,140 6.70 20,066 16.16 0.3547
2014-08-14 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 136,460 6,980 5.39 17,275 6.76 0.3193
2014-05-14 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 129,480 110 0.09 16,181 5.50 0.2959
2014-02-14 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 129,370 -6,167 -4.55 15,338 -0.31 0.2757
2013-11-13 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 135,537 -1,894 -1.38 15,385 0.03 0.2913
2013-08-13 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 137,431 137,431 15,381 0.3048
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.