Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionBoston Private Wealth Llc
Latest Disclosed Ownership20,678 shares
Latest Disclosed Value $ 9,908,948
Boston Private Wealth Llc reports 9.02% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 17, 2026 - Boston Private Wealth Llc filed a 13F-HR form disclosing ownership of 20,678 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $9,908,948 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 2 shares of Berkshire Hathaway Inc.. This represents a change in shares of -9.02% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-17 2026-03-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 20,678 -2,050 -9.02 9,909 -13.27 0.1740
2026-02-04 2025-12-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 22,728 -4,098 -15.28 11,424 -15.29 0.6736
2025-11-06 2025-09-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 26,826 -737 -2.67 13,487 0.72 0.7258
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 27,563 -16,983 -38.12 13,389 -43.56 0.7173
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 44,546 419 0.95 23,724 18.61 0.9749
2025-02-05 2024-12-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 44,127 44,127 20,002 0.3737
2024-10-18 2024-09-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 0 -35,249 -100.00 0 -100.00
2024-08-06 2024-06-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 35,249 -4,448 -11.20 14,339 -14.10 0.3549
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 39,697 -1,616 -3.91 16,693 13.30 0.3722
2024-01-30 2023-12-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 41,313 -650 -1.55 14,735 0.24 0.3584
2023-10-23 2023-09-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 41,963 -4,839 -10.34 14,700 -7.90 0.3228
2023-07-24 2023-06-30 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 46,802 -14,425 -23.56 15,959 -15.58 0.2884
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC COM USD COM 084670702 61,227 -1,485 -2.37 18,905 -2.41 0.2642
2023-02-10 2022-12-31 13F Berkshire Hathaway COM 084670702 62,712 -14,891 -19.19 19,372 -6.52 0.2615
2022-11-09 2022-09-30 13F Berkshire Hathaway COM 084670702 77,603 29,593 61.64 20,722 58.09 0.3026
2022-08-16 2022-06-30 13F Berkshire Hathaway COM 084670702 48,010 -1,317 -2.67 13,108 -24.70 0.2016
2022-05-13 2022-03-31 13F Berkshire Hathaway COM 084670702 49,327 -4,902 -9.04 17,408 7.36 0.2331
2022-02-15 2021-12-31 13F Berkshire Hathaway COM 084670702 54,229 -5,715 -9.53 16,215 -0.89 0.2659
2021-11-09 2021-09-30 13F Berkshire Hathaway COM 084670702 59,944 409 0.69 16,361 -1.12 0.2102
2021-08-13 2021-06-30 13F Berkshire Hathaway COM 084670702 59,535 -342 -0.57 16,546 8.17 0.2098
2021-05-11 2021-03-31 13F Berkshire Hathaway COM 084670702 59,877 427 0.72 15,296 10.97 0.2131
2021-02-10 2020-12-31 13F Berkshire Hathaway BCOM COM 084670702 59,450 2,102 3.67 13,784 12.88 0.2023
2020-11-10 2020-09-30 13F Berkshire Hathaway BCOM COM 084670702 57,348 4,722 8.97 12,211 29.99 0.2014
2020-08-05 2020-06-30 13F Berkshire Hathaway BCOM COM 084670702 52,626 -530 -1.00 9,394 -3.34 0.1746
2020-05-11 2020-03-31 13F Berkshire Hathaway B COM 084670702 53,156 -708 -1.31 9,719 -20.34 0.2359
2020-02-13 2019-12-31 13F Berkshire Hathaway B COM 084670702 53,864 5,855 12.20 12,200 22.16 0.2221
2019-11-01 2019-09-30 13F Berkshire Hathaway B COM 084670702 48,009 1,668 3.60 9,987 1.10 0.1988
2019-07-10 2019-06-30 13F Berkshire Hathaway B COM 084670702 46,341 -135 -0.29 9,878 5.81 0.3318
2019-05-14 2019-03-31 13F Berkshire Hathaway B COM 084670702 46,476 -7,674 -14.17 9,336 -15.56 0.3688
2019-02-14 2018-12-31 13F Berkshire Hathaway B COM 084670702 54,150 1,397 2.65 11,056 -2.12 0.4717
2018-11-13 2018-09-30 13F Berkshire Hathaway B COM 084670702 52,753 983 1.90 11,295 16.89 0.3995
2018-08-14 2018-06-30 13F Berkshire Hathaway B COM 084670702 51,770 8,726 20.27 9,663 12.54 0.3705
2018-05-11 2018-03-31 13F Berkshire Hathaway B COM 084670702 43,044 808 1.91 8,586 2.56 0.3293
2018-02-13 2017-12-31 13F Berkshire Hathaway B COM 084670702 42,236 587 1.41 8,372 9.65 0.3150
2017-11-13 2017-09-30 13F Berkshire Hathaway B COM 084670702 41,649 1,855 4.66 7,635 13.28 0.2936
2017-08-04 2017-06-30 13F Berkshire Hathaway B COM 084670702 39,794 -1,808 -4.35 6,740 -2.80 0.2644
2017-05-11 2017-03-31 13F Berkshire Hathaway B COM 084670702 41,602 -520 -1.23 6,934 1.01 0.2762
2017-02-15 2016-12-31 13F Berkshire Hathaway B COM 084670702 42,122 -1,835 -4.17 6,865 8.11 0.2840
2016-11-15 2016-09-30 13F/A-1 Berkshire Hathaway B COM 084670702 43,957 1,076 2.51 6,350 2.29 0.2582
2016-11-14 2016-09-30 13F Berkshire Hathaway B COM 084670702 42,881 0 6,208 0.2533
2016-08-01 2016-06-30 13F Berkshire Hathaway B COM 084670702 42,881 1,399 3.37 6,208 5.49 0.2533
2016-05-13 2016-03-31 13F Berkshire Hathaway B COM 084670702 41,482 -224 -0.54 5,885 6.88 0.2396
2016-02-12 2015-12-31 13F Berkshire Hathaway B COM 084670702 41,706 -1,762 -4.05 5,506 -2.88 0.2172
2015-11-12 2015-09-30 13F Berkshire Hathaway B COM 084670702 43,468 -5,781 -11.74 5,669 -15.43 0.2197
2015-08-13 2015-06-30 13F Berkshire Hathaway B COM 084670702 49,249 -8,848 -15.23 6,703 -20.05 0.2218
2015-05-12 2015-03-31 13F Berkshire Hathaway B COM 084670702 58,097 -665 -1.13 8,384 -4.98 0.2707
2015-02-10 2014-12-31 13F Berkshire Hathaway B COM 084670702 58,762 58,762 8,823 0.2853
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.