Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionHarbor Group, Inc.
Latest Disclosed Ownership1,554 shares
Latest Disclosed Value $ 744,677
Harbor Group, Inc. reports 17.65% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 10, 2026 - Harbor Group, Inc. filed a 13F-HR form disclosing ownership of 1,554 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $744,677 USD as of March 31, 2026.

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)
2026-04-10 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,554 -333 -17.65 745 -21.52 0.1075
2026-01-12 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,887 -334 -15.04 949 -15.05 0.1420
2025-10-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,221 34 1.55 1,117 5.08 0.1775
2025-07-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,187 0 0.00 1,062 -8.76 0.1882
2025-04-11 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,187 0 0.00 1,165 17.46 0.2326
2025-01-15 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,187 87 4.14 991 2.59 0.2225
2024-10-09 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,100 -46 -2.14 967 10.78 0.2233
2024-07-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,146 0 0.00 873 -3.33 0.2235
2024-04-16 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,146 0 0.00 902 17.91 0.2380
2024-01-10 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,146 0 0.00 765 1.86 0.2193
2023-10-11 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,146 -105 -4.66 752 -2.09 0.4235
2023-07-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,251 -562 -19.98 768 -11.64 0.4248
2023-04-11 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,813 530 23.22 869 23.12 0.5178
2023-01-20 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,283 17 0.75 705 16.53 0.4541
2022-10-12 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,266 184 8.84 605 6.51 0.4397
2022-07-15 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,082 0 0.00 568 -22.72 0.4173
2022-04-25 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,082 0 0.00 735 17.98 0.4643
2022-01-25 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,082 0 0.00 623 9.68 0.3711
2021-10-19 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,082 0 0.00 568 -1.90 0.3661
2021-07-26 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,082 -120 -5.45 579 -2.36 0.3811
2021-04-23 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,202 -38 -1.70 593 12.95 0.4048
2021-01-21 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,240 2,240 525 0.3922
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.