Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionOldfather Financial Services, LLC
Latest Disclosed Ownership14,079 shares
Latest Disclosed Value $ 7,076,809
Oldfather Financial Services, LLC reports 3.63% increase in ownership of BRKB / Berkshire Hathaway Inc.

On January 16, 2026 - Oldfather Financial Services, LLC filed a 13F-HR form disclosing ownership of 14,079 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $7,076,809 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 16, 2025 disclosing 13,586 shares of Berkshire Hathaway Inc.. This represents a change in shares of 3.63% 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)
2026-01-16 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,079 493 3.63 7,077 3.60 2.1072
2025-10-16 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,586 -208 -1.51 6,830 1.94 2.1271
2025-07-10 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,794 -219 -1.56 6,701 -10.22 2.3031
2025-05-01 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,013 541 4.02 7,463 22.22 2.8329
2025-01-16 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,472 0 0.00 6,107 -1.52 2.3266
2024-10-28 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,472 27 0.20 6,201 13.37 2.3859
2024-07-24 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,445 150 1.13 5,469 -2.16 2.2443
2024-04-25 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,295 -58 -0.43 5,591 17.39 2.3012
2024-01-16 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,353 -89 -0.66 4,762 1.15 2.1225
2023-10-25 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,442 -142 -1.05 4,709 1.64 2.3891
2023-07-27 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,584 -75 -0.55 4,632 9.84 2.2637
2023-05-01 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,659 200 1.49 4,217 1.44 2.1809
2023-02-02 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,459 -326 -2.36 4,157 12.93 2.3693
2022-10-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,785 330 2.45 3,681 -5.76 2.3066
2022-07-28 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,455 -266 -1.94 3,906 -14.06 2.2290
2022-04-29 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,721 -98 -0.71 4,545 4.20 2.4670
2022-02-17 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,819 147 1.08 4,362 11.56 2.2901
2021-11-15 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,672 75 0.55 3,910 -0.48 2.0092
2021-08-11 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,597 -412 -2.94 3,929 6.42 2.1478
2021-04-09 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,009 33 0.24 3,692 12.32 2.1245
2021-02-08 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,976 18 0.13 3,287 11.65 1.9502
2020-10-16 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,958 70 0.50 2,944 9.12 2.0961
2020-07-31 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,888 -154 -1.10 2,698 11.17 2.0932
2020-05-13 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,042 195 1.41 2,427 -21.94 2.3047
2020-01-30 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,847 13,847 3,109 2.8871
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.