Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionRsm Us Wealth Management Llc
Latest Disclosed Ownership108,001 shares
Latest Disclosed Value $ 51,753,147
Rsm Us Wealth Management Llc reports 1.06% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 12, 2026 - Rsm Us Wealth Management Llc filed a 13F-HR form disclosing ownership of 108,001 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $51,753,147 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 106,867 shares of Berkshire Hathaway Inc.. This represents a change in shares of 1.06% 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)
2026-05-12 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 108,001 1,134 1.06 51,753 -3.86 0.6354
2026-01-23 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 106,867 -1,016 -0.94 53,830 -0.75 0.6859
2025-11-12 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 107,883 748 0.70 54,237 4.22 0.7067
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 107,135 1,915 1.82 52,043 -7.13 0.7259
2025-05-06 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 105,220 -2,068 -1.93 56,037 15.34 0.8697
2025-01-27 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 107,288 1,986 1.89 48,584 0.87 0.6982
2024-11-07 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 105,302 3,831 3.78 48,166 17.13 0.7065
2024-08-07 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 101,471 39,211 62.98 41,122 57.06 0.6900
2024-05-02 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 62,260 -1,880 -2.93 26,182 14.45 0.6722
2024-02-05 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,140 8,691 15.67 22,876 17.78 0.6199
2023-11-08 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 55,449 -910 -1.61 19,424 1.07 0.6875
2023-08-04 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,359 -1,107 -1.93 19,218 8.31 0.6564
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 57,466 34,517 150.41 17,744 150.08 0.6263
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,949 939 4.27 7,095 20.72 0.3512
2022-10-21 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,010 61 0.28 5,877 -1.94 0.3390
2022-08-11 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,949 61 0.28 5,993 -22.41 0.3357
2022-05-02 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,888 -93 -0.42 7,724 17.53 0.3912
2022-02-08 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,981 -1,646 -6.97 6,572 1.91 0.3209
2021-11-08 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,627 148 0.63 6,449 -1.16 0.3449
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,479 788 3.47 6,525 12.56 0.3525
2021-04-29 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,691 49 0.22 5,797 10.42 0.3700
2021-02-04 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,642 687 3.13 5,250 12.30 0.3721
2020-11-03 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,955 -659 -2.91 4,675 15.80 0.3909
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,614 -958 -4.06 4,037 -6.33 0.3906
2020-05-15 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,572 549 2.38 4,310 -17.35 0.5298
2020-06-04 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,023 6,631 40.45 5,215 52.93 0.5177
2020-06-04 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,392 -782 -4.55 3,410 -6.86 0.3940
2020-06-04 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,174 117 0.69 3,661 6.83 0.4274
2020-06-04 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,057 -2,615 -13.29 3,427 -14.69 0.4196
2020-06-04 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,672 -1,374 -6.53 4,017 -10.85 0.5744
2020-06-04 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,046 1,062 5.31 4,506 20.80 0.5897
2020-06-04 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,984 660 3.42 3,730 -3.24 0.4998
2020-06-04 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,324 852 4.61 3,855 5.27 0.4599
2020-06-04 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,472 -1,084 -5.54 3,662 2.15 0.4428
2020-06-04 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,556 410 2.14 3,585 10.55 0.4704
2020-06-04 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,146 -1,542 -7.45 3,243 -5.95 0.4570
2020-06-04 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,688 1,752 9.25 3,448 11.73 0.5010
2020-06-04 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,936 -475 -2.45 3,086 10.06 0.4902
2020-06-04 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,411 781 4.19 2,804 3.97 0.4891
2020-06-04 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,630 1,408 8.18 2,697 10.40 0.5183
2020-06-04 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,222 2,320 15.57 2,443 24.14 0.4929
2020-06-04 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,902 448 3.10 1,968 4.40 0.4639
2020-06-04 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,454 764 5.58 1,885 1.18 0.4940
2020-06-04 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,690 -120 -0.87 1,863 -6.52 0.4651
2020-06-04 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,810 249 1.84 1,993 -2.11 0.5081
2020-06-04 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,561 355 2.69 2,036 11.62 0.5463
2020-06-04 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,206 -293 -2.17 1,824 6.79 0.5338
2020-06-04 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,499 -490 -3.50 1,708 -2.29 0.4828
2020-06-04 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,989 13,989 1,748 0.5133
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.