Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionCanton Hathaway, LLC
Latest Disclosed Ownership21,245 shares
Latest Disclosed Value $ 10,180,604
Canton Hathaway, LLC reports 13.14% increase in ownership of BRKB / Berkshire Hathaway Inc.

On April 24, 2026 - Canton Hathaway, LLC filed a 13F-HR form disclosing ownership of 21,245 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $10,180,604 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 18,778 shares of Berkshire Hathaway Inc.. This represents a change in shares of 13.14% 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 B CL B NEW 084670702 21,245 2,467 13.14 10,181 7.86 2.0540
2026-01-21 2025-12-31 13F Berkshire Hathaway Inc B COM 084670702 18,778 -2,500 -11.75 9,439 -11.77 1.8200
2025-10-23 2025-09-30 13F Berkshire Hathaway Inc B COM 084670702 21,278 2,580 13.80 10,697 118,755.56 2.0498
2025-08-04 2025-06-30 13F Berkshire Hathaway Inc B COM 084670702 18,698 -5,701 -23.37 9 -25.00 1.8523
2025-04-22 2025-03-31 13F Berkshire Hathaway Inc B COM 084670702 24,399 12,200 100.01 13 140.00 2.6258
2025-02-04 2024-12-31 13F Berkshire Hathaway Inc B COM 084670702 12,199 -250 -2.01 6 0.00 1.3817
2024-11-13 2024-09-30 13F Berkshire Hathaway Inc B COM 084670702 12,449 -100 -0.80 6 0.00 1.4302
2024-07-22 2024-06-30 13F Berkshire Hathaway Inc B COM 084670702 12,549 -230 -1.80 5 0.00 1.3964
2024-05-13 2024-03-31 13F Berkshire Hathaway Inc B COM 084670702 12,779 -300 -2.29 5 25.00 1.4428
2024-01-30 2023-12-31 13F Berkshire Hathaway Inc B COM 084670702 13,079 0 0.00 5 0.00 1.4051
2023-10-11 2023-09-30 13F Berkshire Hathaway Inc B COM 084670702 13,079 -437 -3.23 5 0.00 1.4511
2023-07-11 2023-06-30 13F Berkshire Hathaway Inc B COM 084670702 13,516 0 0.00 5 0.00 1.4429
2023-04-11 2023-03-31 13F Berkshire Hathaway Inc B COM 084670702 13,516 270 2.04 4 0.00 1.4220
2023-01-19 2022-12-31 13F Berkshire Hathaway Inc B COM 084670702 13,246 -1,093 -7.62 4 -99.90 1.4220
2022-10-17 2022-09-30 13F Berkshire Hathaway Inc B COM 084670702 14,339 -145 -1.00 3,829 -3.19 1.3974
2022-07-20 2022-06-30 13F Berkshire Hathaway Inc B COM 084670702 14,484 310 2.19 3,955 -20.93 1.3786
2022-04-12 2022-03-31 13F Berkshire Hathaway Inc B COM 084670702 14,174 -17 -0.12 5,002 17.89 1.3999
2022-01-06 2021-12-31 13F Berkshire Hathaway Inc B COM 084670702 14,191 580 4.26 4,243 14.21 1.1487
2021-10-14 2021-09-30 13F Berkshire Hathaway Inc B COM 084670702 13,611 380 2.87 3,715 1.03 1.0676
2021-07-08 2021-06-30 13F Berkshire Hathaway Inc B COM 084670702 13,231 -81 -0.61 3,677 8.12 1.0751
2021-04-14 2021-03-31 13F Berkshire Hathaway Inc B COM 084670702 13,312 1,796 15.60 3,401 27.38 1.0849
2021-02-03 2020-12-31 13F Berkshire Hathaway Inc B COM 084670702 11,516 1,055 10.09 2,670 19.84 0.9001
2020-11-09 2020-09-30 13F Berkshire Hathaway Inc B COM 084670702 10,461 350 3.46 2,228 23.43 0.9129
2020-07-27 2020-06-30 13F Berkshire Hathaway Inc B COM 084670702 10,111 5 0.05 1,805 -2.33 1.1777
2020-05-06 2020-03-31 13F Berkshire Hathaway Inc B COM 084670702 10,106 -650 -6.04 1,848 -24.14 1.3159
2020-01-10 2019-12-31 13F Berkshire Hathaway Inc B COM 084670702 10,756 106 1.00 2,436 9.98 1.2518
2019-10-11 2019-09-30 13F Berkshire Hathaway Inc B COM 084670702 10,650 592 5.89 2,215 3.31 1.2281
2019-07-15 2019-06-30 13F Berkshire Hathaway Inc B COM 084670702 10,058 335 3.45 2,144 9.78 1.2005
2019-04-10 2019-03-31 13F Berkshire Hathaway Inc B COM 084670702 9,723 1,400 16.82 1,953 14.95 1.1366
2019-02-07 2018-12-31 13F Berkshire Hathaway Inc B COM 084670702 8,323 125 1.52 1,699 -3.19 1.0981
2018-10-12 2018-09-30 13F Berkshire Hathaway Inc B COM 084670702 8,198 8,198 1,755 1.0993
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.