Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionSmithbridge Asset Management Inc/de
Latest Disclosed Ownership6,012 shares
Latest Disclosed Value $ 2,880,950
Smithbridge Asset Management Inc/de reports 226.74% increase in ownership of BRKB / Berkshire Hathaway Inc.

On April 24, 2026 - Smithbridge Asset Management Inc/de filed a 13F-HR form disclosing ownership of 6,012 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $2,880,950 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,840 shares of Berkshire Hathaway Inc.. This represents a change in shares of 226.74% 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)
2026-04-24 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,012 4,172 226.74 2,881 211.69 0.4273
2026-02-11 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,840 800 76.92 925 77.01 0.0790
2025-10-29 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,040 -34 -3.17 523 0.19 0.0760
2025-07-29 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,074 14 1.32 522 -7.62 0.0912
2025-04-16 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,060 -10 -0.93 565 14.63 0.1046
2024-10-24 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,070 -110 -9.32 492 2.50 0.0848
2024-07-19 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,180 100 9.26 480 5.73 0.0998
2024-05-03 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,080 0 0.00 454 0.0937
2024-01-18 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,080 0 0.00 0 0.0877
2023-10-25 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,080 250 30.12 0 0.0937
2023-07-20 2023-06-30 13F/A-1 BERKSHIRE HATHAWAY CLASS B COM 084670702 830 0 0.00 0 0.0663
2023-07-18 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 834 4 0 0.0686
2023-04-20 2023-03-31 13F BERKSHIRE HATHAWAY CLASS B COM 084670702 830 -4 -0.48 0 0.0642
2023-03-01 2022-12-31 13F BERKSHIRE HATHAWAY CLASS B COM 084670702 834 21 2.58 0 -100.00 0.0686
2022-10-25 2022-09-30 13F BERKSHIRE HATHAWAY CLASS B COM 084670702 813 -71 -8.03 217 -9.96 0.0890
2022-08-03 2022-06-30 13F BERKSHIRE HATHAWAY CLASS COM 084670702 884 -65 -6.85 241 -28.06 0.0931
2022-04-25 2022-03-31 13F BERKSHIRE HATHAWAY CLASS COM 084670702 949 -115 -10.81 335 5.35 0.1110
2022-01-24 2021-12-31 13F BERKSHIRE HATHAWAY CLASS COM 084670702 1,064 0 0.00 318 9.66 0.0968
2021-10-04 2021-09-30 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,064 -23 -2.12 290 -3.97 0.0962
2021-07-23 2021-06-30 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,087 -100 -8.42 302 -0.33 0.0984
2021-04-06 2021-03-31 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,187 0 0.00 303 10.18 0.1296
2021-01-21 2020-12-31 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,187 0 0.00 275 8.70 0.1267
2020-10-29 2020-09-30 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,187 34 2.95 253 22.82 0.1307
2020-07-01 2020-06-30 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,153 1,153 206 0.1149
2020-04-13 2020-03-31 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 0 -1,053 -100.00 0 -100.00
2020-01-09 2019-12-31 13F BERKSHIRE HATHAWAYINC DEL CL COM 084670702 1,053 0 0.00 239 9.13 0.1233
2019-10-15 2019-09-30 13F BERKSHIRE HATHAWAY INC CL B NE COM 084670702 1,053 0 0.00 219 -2.23 0.1232
2019-07-09 2019-06-30 13F BERKSHIRE HATHAWAY INC CL B NE COM 084670702 1,053 0 0.00 224 5.66 0.1297
2019-04-03 2019-03-31 13F BERKSHIRE HATHAWAY INC CL B NE COM 084670702 1,053 1,053 212 0.1274
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.