Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership979,988 shares
Latest Disclosed Value $ 469,610
Natixis Advisors, L.p. reports 10.46% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 979,988 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $469,610 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 887,225 shares of Berkshire Hathaway Inc.. This represents a change in shares of 10.46% 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)
2026-05-13 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 979,988 92,763 10.46 470 5.39 0.6532
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 887,225 36,598 4.30 446 4.22 0.6320
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 850,627 32,300 3.95 428 7.56 0.6240
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 818,327 6,813 0.84 398 -8.10 0.6307
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY COM 084670702 811,514 158,257 24.23 432 45.95 0.7987
2025-02-10 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 653,257 -54,359 -7.68 296 -8.92 0.5533
2024-11-06 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 707,616 -9,787 -1.36 326 11.68 0.6351
2024-08-01 2024-06-30 13F BERKSHIRE HATHAWAY COM 084670702 717,403 36,601 5.38 292 1.75 0.6345
2024-04-25 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 680,802 44,609 7.01 286 26.55 0.6582
2024-02-06 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 636,193 35,747 5.95 227 7.62 0.5973
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 600,446 39,003 6.95 210 9.95 0.6433
2023-08-15 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 561,443 71,199 14.52 191 26.49 0.5911
2023-05-11 2023-03-31 13F BERKSHIRE HATHAWAY COM 084670702 490,244 57,674 13.33 151 13.53 0.5209
2023-01-27 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 432,570 61,569 16.60 134 -99.87 0.5051
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY COM 084670702 371,001 -55,101 -12.93 99,064 -14.85 0.4191
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DE COM 084670702 426,102 -112,624 -20.91 116,334 -38.81 0.5116
2022-05-12 2022-03-31 13F BERKSHIRE HATHAWAY COM 084670702 538,726 49,797 10.18 190,122 30.05 0.7250
2022-02-08 2021-12-31 13F BERKSHIRE HATHAWAY COM 084670702 488,929 249,621 104.31 146,190 123.82 0.5582
2021-11-15 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 239,308 -37,966 -13.69 65,317 -15.24 0.2686
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY COM 084670702 277,274 27,793 11.14 77,060 20.91 0.3597
2021-05-05 2021-03-31 13F BERKSHIRE HATHAWAY COM 084670702 249,481 27,563 12.42 63,734 23.86 0.3327
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY COM 084670702 221,918 21,485 10.72 51,456 20.56 0.2964
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY COM 084670702 200,433 9,183 4.80 42,680 25.01 0.2686
2020-08-11 2020-06-30 13F BERKSHIRE HATHAWAY COM 084670702 191,250 -61,706 -24.39 34,140 -26.18 0.2266
2020-04-27 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 252,956 -77,820 -23.53 46,248 -38.27 0.3769
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 330,776 -2,165 -0.65 74,921 8.18 0.5284
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY B COM 084670702 332,941 -2,953 -0.88 69,258 -3.28 0.5497
2019-08-12 2019-06-30 13F BERKSHIRE HATHAWAY B COM 084670702 335,894 14,035 4.36 71,603 10.74 0.5848
2019-05-15 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY B COM 084670702 321,859 -7,217 -2.19 64,659 -3.77 0.5661
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY B COM 084670702 321,859 -7,217 64,659
2019-02-13 2018-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 329,076 9,042 2.83 67,190 -1.94 0.6634
2019-02-13 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 329,076 9,042 67,190
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 320,034 -5,242 -1.61 68,522 12.86 0.6031
2018-08-14 2018-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL COM 084670702 325,276 -39,507 -10.83 60,713 -16.56 0.5800
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 325,276 60,713
2018-05-10 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 364,783 34,324 10.39 72,766 11.09 0.7182
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 330,459 7,821 2.42 65,503 10.75 0.6671
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 322,638 2,069 0.65 59,144 8.93 0.6248
2017-07-27 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 320,569 31,505 10.90 54,295 12.69 0.5877
2017-05-12 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL PLC ADR 084670702 289,064 -698 -0.24 48,181 2.02 0.5339
2017-02-07 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 289,762 -6,964 -2.35 47,226 10.17 0.5678
2016-11-04 2016-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 296,726 32,312 12.22 42,868 11.97 0.5553
2016-08-01 2016-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 264,414 58,493 28.41 38,284 31.04 0.5293
2016-05-06 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 205,921 22,759 12.43 29,216 20.80 0.4372
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 183,162 2,142 1.18 24,185 2.46 0.3965
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY COM 084670702 181,020 36,358 25.13 23,605 19.88 0.4094
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY COM 084670702 144,662 38,692 36.51 19,690 28.74 0.3343
2015-05-15 2015-03-31 13F BERKSHIRE HATHAWAY COM 084670702 105,970 30,309 40.06 15,294 34.63 0.2685
2015-02-05 2014-12-31 13F BERKSHIRE HATHAWAY COM 084670702 75,661 -3,848 -4.84 11,360 3.42 0.2126
2014-11-03 2014-09-30 13F BERKSHIRE HATHAWAY COM 084670702 79,509 -9,001 -10.17 10,984 -1.94 0.2204
2014-08-13 2014-06-30 13F BERKSHIRE HATHAWAY COM 084670702 88,510 9,303 11.75 11,201 13.16 0.1605
2014-05-13 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 79,207 11,865 17.62 9,898 23.97 0.1523
2014-02-12 2013-12-31 13F BERKSHIRE HATHAWAY COM 084670702 67,342 16,178 31.62 7,984 37.49 0.1307
2013-10-30 2013-09-30 13F BERKSHIRE HATHAWAY COM 084670702 51,164 7,596 17.43 5,807 19.09 0.1069
2013-07-19 2013-06-30 13F BERKSHIRE HATHAWAY COM 084670702 43,568 43,568 4,876 0.0971
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.