Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionKeebeck Wealth Management, LLC
Latest Disclosed Ownership6,445 shares
Latest Disclosed Value $ 3,088,444
Keebeck Wealth Management, LLC reports 13.99% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Keebeck Wealth Management, LLC filed a 13F-HR form disclosing ownership of 6,445 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $3,088,444 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,654 shares of Berkshire Hathaway Inc.. This represents a change in shares of 13.99% 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)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,445 791 13.99 3,088 8.69 0.3474
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,654 381 7.23 2,842 7.21 0.3280
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,273 145 2.83 2,651 6.38 0.3133
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,128 302 6.26 2,491 -3.07 0.3260
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,826 244 5.33 2,570 23.80 0.3792
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,582 170 3.85 2,077 2.27 0.2994
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,412 -60 -1.34 2,031 11.60 0.2941
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,472 -19 -0.42 1,819 -3.65 0.2668
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,491 -100 -2.18 1,889 15.33 0.2778
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,591 100 2.23 1,637 4.07 0.2701
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,491 50 1.13 1,573 3.90 0.2740
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,441 913 25.88 1,514 39.03 0.2081
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,528 0 0.00 1,089 0.00 0.1756
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,528 58 1.67 1,090 17.48 0.1913
2022-11-14 2022-09-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 3,470 -145 -4.01 927 -6.08 0.1787
2022-08-15 2022-06-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 3,615 175 5.09 987 -18.70 0.1886
2022-05-16 2022-03-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 3,440 620 21.99 1,214 44.01 0.2012
2022-02-14 2021-12-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,820 0 0.00 843 9.48 0.1504
2021-11-16 2021-09-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,820 200 7.63 770 5.77 0.1518
2021-08-16 2021-06-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,620 -25 -0.95 728 7.69 0.1049
2021-05-13 2021-03-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,645 300 12.79 676 24.26 0.1050
2021-02-16 2020-12-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,345 0 0.00 544 9.02 0.0947
2020-11-02 2020-09-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,345 1,050 81.08 499 116.02 0.1030
2020-08-06 2020-06-30 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 1,295 -888 -40.68 231 -42.11 0.0731
2020-05-14 2020-03-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 2,183 830 61.35 399 30.39 0.1660
2020-02-14 2019-12-31 13F Berkshire Hathaway Inc Del CL B CL B NEW 084670702 1,353 1,353 306 0.0970
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.