Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionGuyasuta Investment Advisors Inc
Latest Disclosed Ownership177,590 shares
Latest Disclosed Value $ 85,101,128
Guyasuta Investment Advisors Inc reports 0.82% increase in ownership of BRKB / Berkshire Hathaway Inc.

On April 17, 2026 - Guyasuta Investment Advisors Inc filed a 13F-HR form disclosing ownership of 177,590 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $85,101,128 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 176,153 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.82% 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)
2026-04-17 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 177,590 1,437 0.82 85,101 -3.89 4.9196
2026-01-23 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 176,153 -681 -0.39 88,543 -0.40 5.0441
2025-10-21 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 176,834 -5,651 -3.10 88,902 0.29 5.1115
2025-07-17 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 182,485 32,953 22.04 88,646 11.31 5.4290
2025-04-22 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,532 1,403 0.95 79,638 18.61 5.2064
2025-01-30 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,129 -826 -0.55 67,144 -2.06 4.2223
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,955 1,371 0.93 68,558 30.25 4.2294
2024-07-22 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 147,584 -1,612 -1.08 52,637 -1.08 3.8710
2024-04-16 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,196 -733 -0.49 53,212 -0.49 3.8585
2024-02-05 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,929 177 0.12 53,474 1.93 3.8650
2023-10-25 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,752 500 0.34 52,458 3.07 4.0636
2023-07-17 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,252 -1,090 -0.73 50,895 9.64 3.7634
2023-04-28 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 150,342 2,215 1.50 46,421 1.45 3.5869
2023-01-30 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,127 4,169 2.90 45,756 19.03 3.6124
2022-10-25 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 143,958 2,095 1.48 38,440 -0.75 3.3226
2022-07-21 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 141,863 -4,829 -3.29 38,731 -25.18 3.0295
2022-05-03 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 146,692 627 0.43 51,769 18.54 3.5546
2022-02-08 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 146,065 1,320 0.91 43,674 10.55 2.8608
2021-11-09 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 144,745 1,644 1.15 39,507 -0.66 2.8165
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 143,101 708 0.50 39,771 9.33 2.8596
2021-05-11 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 142,393 377 0.27 36,377 10.47 2.8405
2021-02-08 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 142,016 -1,025 -0.72 32,930 8.11 2.7507
2020-10-28 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 143,041 4,940 3.58 30,459 23.55 2.8281
2020-08-06 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 138,101 -991 -0.71 24,653 -3.06 2.5283
2020-04-28 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 139,092 50,696 57.35 25,430 27.00 3.0474
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 88,396 4,233 5.03 20,023 14.37 1.9442
2019-11-08 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 84,163 4,823 6.08 17,507 3.51 1.8100
2019-08-06 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 79,340 56,523 247.72 16,913 268.96 1.7574
2019-05-10 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,817 -100 -0.44 4,584 -2.03 0.5105
2019-02-11 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,917 -100 -0.43 4,679 -5.05 0.5771
2018-11-08 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,017 -571 -2.42 4,928 11.92 0.5250
2018-08-07 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,588 1,541 6.99 4,403 0.11 0.5046
2018-05-09 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,047 -64 -0.29 4,398 0.34 0.5150
2018-02-12 2017-12-31 13F BERKSHIRE HATHAWAY INC D CL B NEW 084670702 22,111 1,985 9.86 4,383 18.81 0.4966
2017-11-09 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,126 -71 -0.35 3,689 7.83 0.4453
2017-08-09 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,197 -55 -0.27 3,421 1.33 0.4114
2017-05-09 2017-03-31 13F BERKSHIRE HATHAWAY INC D CL B NEW 084670702 20,252 -400 -1.94 3,376 0.30 0.4073
2017-02-07 2016-12-31 13F BERKSHIRE HATHAWAY INC DE CL B NEW 084670702 20,652 -838 -3.90 3,366 8.41 0.4350
2016-11-03 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,490 1,289 6.38 3,105 6.19 0.3961
2016-08-12 2016-06-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 20,201 70 0.35 2,924 2.38 0.3913
2016-05-12 2016-03-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 20,131 1,535 8.25 2,856 16.33 0.3974
2016-02-05 2015-12-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 18,596 169 0.92 2,455 2.21 0.3451
2015-11-06 2015-09-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 18,427 160 0.88 2,402 -3.38 0.3497
2015-08-04 2015-06-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 18,267 1,055 6.13 2,486 0.08 0.3296
2015-05-12 2015-03-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 17,212 3,035 21.41 2,484 16.73 0.3334
2015-02-12 2014-12-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670702 14,177 736 5.48 2,128 14.66 0.2867
2014-10-17 2014-09-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 13,441 555 4.31 1,856 13.87 0.2586
2014-08-05 2014-06-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 12,886 190 1.50 1,630 2.77 0.2154
2014-04-30 2014-03-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 12,696 -775 -5.75 1,586 -0.69 0.2261
2014-02-04 2013-12-31 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 13,471 -217 -1.59 1,597 2.83 0.2328
2013-10-22 2013-09-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 13,688 0 0.00 1,553 1.44 0.2478
2013-07-12 2013-06-30 13F BERKSHIRE HATHAWAY INC. CLASS COM 084670207 13,688 13,688 1,531 0.2503
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.