Berkshire Hathaway Inc.
DE ˙ XTRA
424,90 € ↑16,80 (4,12%)
2026-06-05
DEL PRIS
SecurityDE:BRYN / Berkshire Hathaway Inc.
InstitutionAufman Associates Inc
Latest Disclosed Ownership6,778 shares
Latest Disclosed Value $ 3,248,018
Aufman Associates Inc ownership in BRYN / Berkshire Hathaway Inc.

On May 15, 2026 - Aufman Associates Inc filed a 13F-HR form disclosing ownership of 6,778 shares of Berkshire Hathaway Inc. (DE:BRYN) valued at $2,805,753 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 6,778 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $2,879,972 USD.

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)
2026-05-15 2026-03-31 13F Berkshire Hathaway Cl B Stock 084670702 6,778 0 0.00 3,248 -4.64 1.5935
2026-02-11 2025-12-31 13F Berkshire Hathaway Cl B Stock 084670702 6,778 -30 -0.44 3,407 -0.47 1.7460
2025-11-12 2025-09-30 13F Berkshire Hathaway Cl B Stock 084670702 6,808 -124 -1.79 3,423 1.63 1.9264
2025-08-13 2025-06-30 13F Berkshire Hathaway Cl B Stock 084670702 6,932 -272 -3.78 3,367 -12.23 2.0766
2025-05-14 2025-03-31 13F Berkshire Hathaway Cl B Stock 084670702 7,204 -244 -3.28 3,837 13.63 2.6377
2025-02-12 2024-12-31 13F Berkshire Hathaway Cl B Stock 084670702 7,448 -286 -3.70 3,376 -5.14 2.2791
2024-11-13 2024-09-30 13F Berkshire Hathaway Cl B Stock 084670702 7,734 -182 -2.30 3,560 10.53 2.2883
2024-08-09 2024-06-30 13F Berkshire Hathaway Cl B Stock 084670702 7,916 126 1.62 3,220 -1.68 2.2922
2024-05-10 2024-03-31 13F Berkshire Hathaway Cl B Stock 084670702 7,790 -96 -1.22 3,276 16.47 2.3063
2024-02-14 2023-12-31 13F Berkshire Hathaway Cl B Stock 084670702 7,886 -86 -1.08 2,813 0.72 2.1227
2023-11-13 2023-09-30 13F Berkshire Hathaway Cl B Stock 084670702 7,972 -188 -2.30 2,793 0.36 2.3426
2023-08-11 2023-06-30 13F Berkshire Hathaway Cl B Stock 084670702 8,160 -160 -1.92 2,783 8.33 2.2951
2023-05-10 2023-03-31 13F Berkshire Hathaway Cl B Stock 084670702 8,320 -62 -0.74 2,569 -0.81 2.1865
2023-02-08 2022-12-31 13F Berkshire Hathaway Cl B Stock 084670702 8,382 158 1.92 2,589 17.90 2.3932
2022-11-14 2022-09-30 13F Berkshire Hathaway Cl B Stock 084670702 8,224 0 0.00 2,196 -2.18 2.3112
2022-08-10 2022-06-30 13F Berkshire Hathaway Cl B Stock 084670702 8,224 -49 -0.59 2,245 -23.12 2.1344
2022-05-13 2022-03-31 13F Berkshire Hathaway Cl B Stock 084670702 8,273 -26 -0.31 2,920 17.69 2.3003
2022-02-09 2021-12-31 13F Berkshire Hathaway Cl B Stock 084670702 8,299 0 0.00 2,481 9.54 1.8346
2021-11-12 2021-09-30 13F Berkshire Hathaway Cl B Stock 084670702 8,299 -60 -0.72 2,265 -2.50 1.8630
2021-08-11 2021-06-30 13F Berkshire Hathaway Cl B Stock 084670702 8,359 -135 -1.59 2,323 7.05 1.7916
2021-05-17 2021-03-31 13F Berkshire Hathaway Cl B Stock 084670702 8,494 146 1.75 2,170 12.09 1.8065
2021-02-10 2020-12-31 13F Berkshire Hathaway Cl B Stock 084670702 8,348 -150 -1.77 1,936 6.96 1.7369
2020-11-13 2020-09-30 13F Berkshire Hathaway Cl B Stock 084670702 8,498 -195 -2.24 1,810 16.62 1.9455
2020-08-13 2020-06-30 13F Berkshire Hathaway Cl B Stock 084670702 8,693 1,475 20.44 1,552 17.58 1.7611
2020-05-13 2020-03-31 13F Berkshire Hathaway Cl B Stock 084670702 7,218 -253 -3.39 1,320 -21.99 1.8209
2020-02-06 2019-12-31 13F Berkshire Hathaway Cl B Stock 084670702 7,471 7,471 1,692 1.7419
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.