Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionElk River Wealth Management, LLC
Latest Disclosed Ownership2,098 shares
Latest Disclosed Value $ 1,005,362
Elk River Wealth Management, LLC reports 0.53% increase in ownership of BRKB / Berkshire Hathaway Inc.

On April 17, 2026 - Elk River Wealth Management, LLC filed a 13F-HR form disclosing ownership of 2,098 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $1,005,362 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 18, 2024 disclosing 0 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.53% 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)
2026-04-17 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,098 11 0.53 1,005 -4.19 0.1670
2026-02-06 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,087 -23 -1.09 1,049 -1.04 0.1686
2025-10-23 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,110 0 0.00 1,061 3.52 0.1700
2025-07-11 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,110 0 0.00 1,025 -8.82 0.1764
2025-04-11 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,110 0 0.00 1,124 17.47 0.2104
2025-02-03 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,110 0 0.00 956 -1.54 0.1732
2024-10-11 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,110 2,110 971 0.1766
2024-04-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -4,000 -100.00 0 -100.00
2024-01-18 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,000 1,522 61.42 1,427 64.29 0.2742
2023-10-10 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,478 -204 -7.61 868 -5.03 0.1921
2023-07-17 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,682 0 0.00 915 10.39 0.1958
2023-04-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,682 -125 -4.45 828 -4.50 0.1880
2023-01-20 2022-12-31 13F/A-1 Berkshire Hathaway Inc B Common Stock 084670702 2,807 -77 -2.67 867 12.60 0.2099
2023-01-20 2022-12-31 13F Berkshire Hathaway Inc B Common Stock 084670702 2,807 -77 867 0.2099
2022-10-17 2022-09-30 13F Berkshire Hathaway Inc B Common Stock 084670702 2,884 -41 -1.40 770 -3.63 0.2033
2022-07-12 2022-06-30 13F Berkshire Hathaway Inc B Common Stock 084670702 2,925 40 1.39 799 -21.51 0.2020
2022-04-18 2022-03-31 13F Berkshire Hathaway Inc B Common Stock 084670702 2,885 1,389 92.85 1,018 127.74 0.2224
2022-02-11 2021-12-31 13F/A-1 Berkshire Hathaway Inc B Common Stock 084670702 1,496 30 2.05 447 11.75 0.1012
2022-01-19 2021-12-31 13F Berkshire Hathaway Inc B Common Stock 084670702 1,466 0 400 0.1007
2021-11-15 2021-09-30 13F Berkshire Hathaway Inc B Common Stock 084670702 1,466 21 1.45 400 -0.50 0.1012
2021-07-22 2021-06-30 13F Berkshire Hathaway Inc B Common Stock 084670702 1,445 -340 -19.05 402 -11.84 0.1041
2021-04-27 2021-03-31 13F Berkshire Hathaway Inc B Common Stock 084670702 1,785 69 4.02 456 14.57 0.1298
2021-02-08 2020-12-31 13F Berkshire Hathaway Inc B Common Stock 084670702 1,716 1,716 398 0.1315
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.