Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership105,390 shares
Latest Disclosed Value $ 50,502,888
Lazard Asset Management Llc reports 0.34% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 105,390 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $50,502,888 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 105,034 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.34% 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)
2026-05-15 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 105,390 356 0.34 50,503 -4.34 0.0433
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 105,034 6,179 6.25 52,795 6.23 0.0895
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 98,855 11,419 13.06 49,698 118,228.57 0.0669
2025-08-14 2025-06-30 13F BERKSHIRE-HAT Common Stock 084670702 87,436 -1,336 -1.50 42 -10.64 0.0584
2025-05-15 2025-03-31 13F BERKSHIRE-HAT Common Stock 084670702 88,772 -1,885 -2.08 47 14.63 0.0726
2025-02-14 2024-12-31 13F BERKSHIRE-HAT Common Stock 084670702 90,657 -13,266 -12.77 41 -12.77 0.0601
2024-11-14 2024-09-30 13F BERKSHIRE-HAT Common Stock 084670702 103,923 -31,695 -23.37 48 -14.55 0.0640
2024-08-14 2024-06-30 13F BERKSHIRE-HAT Common Stock 084670702 135,618 -4,020 -2.88 55 -5.17 0.0692
2024-07-09 2024-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 139,638 -30,699 -18.02 59 -3.33 0.0714
2024-05-14 2024-03-31 13F BERKSHIRE-HAT Common Stock 084670702 139,638 -30,699 59 0.0712
2024-02-14 2023-12-31 13F BERKSHIRE-HAT Common Stock 084670702 170,337 -339 -0.20 61 1.69 0.0769
2023-11-14 2023-09-30 13F BERKSHIRE-HAT Common Stock 084670702 170,676 -27,472 -13.86 60 -11.94 0.0813
2023-08-15 2023-06-30 13F BERKSHIRE-HAT Common Stock 084670702 198,148 -33,401 -14.43 68 -5.63 0.0832
2023-05-15 2023-03-31 13F BERKSHIRE-HAT Common Stock 084670702 231,549 -8,890 -3.70 71 -99.90 0.0937
2023-02-15 2022-12-31 13F BERKSHIRE-HAT Common Stock 084670702 240,439 -29,342 -10.88 74,270 3.10 0.1023
2022-11-14 2022-09-30 13F BERKSHIRE-HAT Common Stock 084670702 269,781 -11,377 -4.05 72,035 -6.16 0.1052
2022-08-09 2022-06-30 13F BERKSHIRE-HAT Common Stock 084670702 281,158 1,051 0.38 76,761 -22.35 0.1038
2022-05-13 2022-03-31 13F BERKSHIRE-HAT Common Stock 084670702 280,107 -17,136 -5.76 98,851 11.23 0.1145
2022-02-09 2021-12-31 13F BERKSHIRE-HAT Common Stock 084670702 297,243 -126,984 -29.93 88,874 -23.24 0.0946
2021-11-15 2021-09-30 13F BERKSHIRE-HAT Common Stock 084670702 424,227 34,851 8.95 115,788 7.00 0.1306
2021-08-12 2021-06-30 13F BERKSHIRE-HAT Common Stock 084670702 389,376 -85,906 -18.07 108,214 -10.88 0.1214
2021-05-14 2021-03-31 13F BERKSHIRE-HAT Common Stock 084670702 475,282 187,544 65.18 121,419 81.99 0.1471
2021-02-11 2020-12-31 13F BERKSHIRE-HAT Common Stock 084670702 287,738 1,933 0.68 66,717 9.63 0.0843
2020-11-13 2020-09-30 13F BERKSHIRE-HAT Common Stock 084670702 285,805 -1,146 -0.40 60,859 18.81 0.0855
2020-08-13 2020-06-30 13F BERKSHIRE-HAT Common Stock 084670702 286,951 31,628 12.39 51,223 9.73 0.0787
2020-05-14 2020-03-31 13F BERKSHIRE-HAT Common Stock 084670702 255,323 3,145 1.25 46,680 -18.27 0.0855
2020-02-13 2019-12-31 13F BERKSHIRE-HAT Common Stock 084670702 252,178 79,285 45.86 57,117 58.82 0.0816
2019-11-14 2019-09-30 13F BERKSHIRE-HAT Common Stock 084670702 172,893 64,312 59.23 35,964 55.39 0.0591
2019-08-14 2019-06-30 13F BERKSHIRE-HAT Common Stock 084670702 108,581 -28,776 -20.95 23,145 -16.12 0.0375
2019-08-28 2019-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 137,357 -1,681 -1.21 27,593 -2.80 0.0451
2019-05-13 2019-03-31 13F BERKSHIRE-HAT Common Stock 084670702 137,357 -1,681 27,593
2019-08-28 2018-12-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 139,038 -42,872 -23.57 28,387 -27.12 0.0523
2019-02-13 2018-12-31 13F BERKSHIRE-HAT Common Stock 084670702 139,038 -42,872 28,387
2019-08-30 2018-09-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 181,910 -20,738 -10.23 38,948 2.97 0.0630
2018-11-13 2018-09-30 13F BERKSHIRE-HAT Common Stock 084670702 181,910 -20,738 38,948
2019-08-30 2018-06-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 202,648 637 0.32 37,823 -6.14 0.0657
2018-08-13 2018-06-30 13F BERKSHIRE-HAT Common Stock 084670702 202,648 637 37,823
2019-08-28 2018-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 202,011 -11,078 -5.20 40,296 -4.60 0.0688
2018-05-14 2018-03-31 13F BERKSHIRE-HAT Common Stock 084670702 202,011 -11,078 40,296
2019-08-28 2017-12-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 213,089 -45,015 -17.44 42,237 -10.73 0.0723
2018-02-13 2017-12-31 13F BERKSHIRE-HAT Common Stock 084670702 213,089 -45,015 42,237
2019-08-19 2017-09-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 258,104 -100 -0.04 47,315 8.20 0.0856
2017-11-13 2017-09-30 13F BERKSHIRE-HAT Common Stock 084670702 258,104 -100 47,315
2019-08-19 2017-06-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 258,204 -1,879 -0.72 43,731 0.88 0.0822
2017-08-11 2017-06-30 13F BERKSHIRE-HAT Common Stock 084670702 258,204 -1,879 43,731
2019-08-13 2017-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 260,083 -3,400 -1.29 43,350 0.95 0.0818
2017-05-12 2017-03-31 13F BERKSHIRE-HAT Common Stock 084670702 260,083 -3,220 43,350
2019-07-30 2016-12-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 263,483 -5,250 -1.95 42,941 10.61 0.0876
2017-02-13 2016-12-31 13F BERKSHIRE-HAT Common Stock 084670702 263,303 -5,430 42,912
2019-08-07 2016-09-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 268,733 42,405 18.74 38,823 18.47 0.0771
2016-11-14 2016-09-30 13F BERKSHIRE-HAT Common Stock 084670702 268,733 42,405 38,823
2019-07-29 2016-06-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 226,328 30,090 15.33 32,769 17.70 0.0691
2016-08-15 2016-06-30 13F BERKSHIRE-HAT Common Stock 084670702 226,328 30,090 32,769
2019-07-25 2016-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 196,238 50,875 35.00 27,841 45.07 0.0607
2016-05-12 2016-03-31 13F BERKSHIRE-HAT Common Stock 084670702 196,238 50,875 27,841
2019-07-24 2015-12-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 145,363 44,120 43.58 19,192 45.38 0.0439
2016-02-12 2015-12-31 13F BERKSHIRE-HAT Common Stock 084670702 145,363 44,120 19,192
2019-07-15 2015-09-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 101,243 -7,955 -7.28 13,201 -11.18 0.0316
2015-11-13 2015-09-30 13F BERKSHIRE-HAT Common Stock 084670702 101,243 -7,955 13,201
2019-07-08 2015-06-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 109,198 -1,710 -1.54 14,862 -7.15 0.0312
2015-08-13 2015-06-30 13F BERKSHIRE-HAT Common Stock 084670702 109,198 -1,710 14,862
2015-06-09 2015-03-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 110,908 -2,705 -2.38 16,006 -6.17 0.0345
2015-05-15 2015-03-31 13F BERKSHIRE-HAT Common Stock 084670702 221,816 32,012
2019-08-29 2014-12-31 13F/A-3 BERKSHIRE-HAT Common Stock 084670702 113,613 -80 -0.07 17,058 8.63 0.0364
2015-05-20 2014-12-31 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 226,990 113,377 34,081 0.0656
2015-06-09 2014-12-31 13F/A-2 BERKSHIRE-HAT Common Stock 084670702 113,613 -113,377 17,058 0.0389
2014-11-07 2014-09-30 13F BERKSHIRE-HAT Common Stock 084670702 113,693 3,624 3.29 15,703 12.74 0.0337
2014-08-12 2014-06-30 13F BERKSHIRE-HAT Common Stock 084670702 110,069 18 0.02 13,929 1.29 0.0291
2014-05-12 2014-03-31 13F BERKSHIRE-HAT Common Stock 084670702 110,051 -53,089 -32.54 13,751 -28.90 0.0307
2014-02-14 2013-12-31 13F BERKSHIRE-HAT Common Stock 084670702 163,140 -3,063 -1.84 19,341 2.53 0.0429
2014-01-13 2013-09-30 13F/A-1 BERKSHIRE-HAT Common Stock 084670702 166,203 -60,368 -26.64 18,864 -25.60 0.0448
2013-11-13 2013-09-30 13F BERKSHIRE-HAT Common Stock 084670702 177,453 20,141
2013-08-13 2013-06-30 13F BERKSHIRE-HAT Common Stock 084670702 226,571 226,571 25,356 0.0601
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.