Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionEmpirical Financial Services, LLC d.b.a. Empirical Wealth Management
Latest Disclosed Ownership37,692 shares
Latest Disclosed Value $ 18,062,073
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management reports 0.10% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 4, 2026 - Empirical Financial Services, LLC d.b.a. Empirical Wealth Management filed a 13F-HR form disclosing ownership of 37,692 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $18,062,073 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 37,653 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.10% 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)
2026-05-04 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,692 39 0.10 18,062 -4.57 0.2153
2026-01-16 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,653 1,382 3.81 18,926 3.80 0.3371
2025-11-10 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,271 2,543 7.54 18,235 11.29 0.3648
2025-07-21 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,728 4,731 16.32 16,384 6.09 0.3698
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,997 28,997 15,443 0.3972
2022-08-01 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -16,080 -100.00 0 -100.00
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,080 -3,955 -19.74 5,675 -5.27 0.2829
2022-02-14 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,035 2,827 16.43 5,991 27.55 0.2991
2021-11-02 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,208 4,144 31.72 4,697 29.36 0.2675
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,064 3,283 33.57 3,631 45.30 0.2199
2021-05-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,781 -1,430 -12.76 2,499 -3.85 0.2002
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,211 775 7.43 2,599 16.97 0.1981
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,436 -566 -5.14 2,222 13.14 0.1898
2020-08-12 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,002 3,280 42.48 1,964 39.09 0.1832
2020-05-11 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,722 1,379 21.74 1,412 -1.74 0.1543
2020-02-13 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,343 -377 -5.61 1,437 2.79 0.1579
2019-11-13 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,720 274 4.25 1,398 1.75 0.1693
2019-08-12 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,446 2,268 54.28 1,374 63.77 0.1790
2019-05-13 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,178 999 31.42 839 29.28 0.1221
2019-02-13 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,179 -2,471 -43.73 649 -46.36 0.1102
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,650 398 7.58 1,210 23.47 0.2145
2018-08-13 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,252 831 18.80 980 11.11 0.1835
2018-05-14 2018-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,421 3,337 307.84 882 310.23 0.1743
2018-05-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,666 4,582 882
2018-02-12 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,084 -37 -3.30 215 4.37 0.0461
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,121 -78 -6.51 206 1.48 0.0475
2017-08-10 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,199 -50 -4.00 203 -2.40 0.0494
2017-05-12 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,249 1,249 208 0.0518
2015-10-22 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -1,650 -100.00 0 -100.00
2015-08-06 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,650 1,650 225 0.0523
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.