Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNorth Star Asset Management Inc
Latest Disclosed Ownership4,740 shares
Latest Disclosed Value $ 2,271,408
North Star Asset Management Inc reports 4.22% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 6, 2026 - North Star Asset Management Inc filed a 13F-HR form disclosing ownership of 4,740 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $2,271,408 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 4,949 shares of Berkshire Hathaway Inc.. This represents a change in shares of -4.22% 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)
2026-05-06 2026-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,740 -209 -4.22 2,271 -8.69 0.0591
2026-02-09 2025-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,949 10 0.20 2,488 0.16 0.0596
2025-11-10 2025-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,939 63 1.29 2,483 4.86 0.1007
2025-08-12 2025-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,876 655 15.52 2,369 5.34 0.1002
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,221 -13 -0.31 2,248 17.14 0.1026
2025-02-19 2024-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,234 1 0.02 1,919 -1.49 0.0850
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,233 -1,090 -20.48 1,948 -10.02 0.0874
2024-08-05 2024-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,323 36 0.68 2,165 -2.61 0.1028
2024-05-08 2024-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,287 19 0.36 2,223 18.37 0.1050
2024-02-01 2023-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,268 108 2.09 1,879 3.93 0.0961
2023-10-26 2023-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,160 -25 -0.48 1,808 2.21 0.1038
2023-08-09 2023-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,185 11 0.21 1,768 10.71 0.0975
2023-05-10 2023-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,174 0 0.00 1,598 -0.06 0.0939
2023-03-06 2022-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 5,174 1,055 25.61 1,598 45.27 0.0993
2022-11-08 2022-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,119 -20 -0.48 1,100 -2.65 0.0753
2022-07-28 2022-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,139 -485 -10.49 1,130 -30.76 0.0745
2022-04-29 2022-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,624 5 0.11 1,632 18.18 0.0857
2022-02-07 2021-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,619 142 3.17 1,381 13.01 0.0695
2021-10-20 2021-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,477 2 0.04 1,222 -1.77 0.0671
2021-07-30 2021-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,475 350 8.48 1,244 18.03 0.0690
2021-04-29 2021-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,125 -10 -0.24 1,054 10.02 0.0632
2021-02-16 2020-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 4,135 415 11.16 958 20.96 0.0605
2020-11-02 2020-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,720 60 1.64 792 21.10 0.0584
2020-07-28 2020-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,660 40 1.10 654 -1.21 0.0519
2020-04-24 2020-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,620 -224 -5.83 662 -23.91 0.0639
2020-02-06 2019-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,844 24 0.63 870 9.43 0.0625
2019-10-25 2019-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,820 0 0.00 795 -2.33 0.0623
2019-08-12 2019-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,820 -6 -0.16 814 5.85 0.0635
2019-04-26 2019-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,826 35 0.92 769 -0.65 0.0623
2019-01-29 2018-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,791 0 0.00 774 -4.68 0.0733
2018-10-29 2018-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,791 250 7.06 812 22.84 0.0652
2018-08-10 2018-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,541 0 0.00 661 -6.37 0.0567
2018-04-27 2018-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,541 215 6.46 706 7.13 0.0635
2018-02-01 2017-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,326 199 6.36 659 15.01 0.0591
2017-10-25 2017-09-30 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670702 3,127 0 0.00 573 8.11 0.0570
2017-10-25 2017-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,127 0 522
2017-08-16 2017-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,127 0 0.00 530 1.53 0.0539
2017-05-18 2017-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,127 25 0.81 522 3.16 0.0551
2017-01-10 2016-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,102 0 0.00 506 12.95 0.0557
2016-10-05 2016-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,102 0 0.00 448 -0.22 0.0505
2016-07-29 2016-06-30 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670702 3,102 25 0.81 449 2.98 0.0523
2016-07-28 2016-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,077 436
2016-05-05 2016-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,077 145 4.95 436 12.66 0.0510
2016-01-28 2015-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 2,932 -239 -7.54 387 -6.30 0.0465
2015-10-28 2015-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,171 -200 -5.93 413 -9.83 0.0514
2015-07-30 2015-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,371 75 2.28 458 -3.58 0.0520
2015-05-15 2015-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,296 -155 -4.49 475 -8.48 0.0538
2015-01-16 2014-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,451 22 0.64 519 9.73 0.0593
2014-10-28 2014-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,429 -13 -0.38 473 8.74 0.0564
2014-07-30 2014-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,442 0 0.00 435 1.16 0.0507
2014-04-24 2014-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 3,442 -325 -8.63 430 -3.59 0.0515
2014-02-07 2013-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 3,767 420 12.55 446 17.37 0.0540
2013-10-22 2013-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 3,347 204 6.49 380 7.95 0.0497
2013-08-06 2013-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 3,143 3,143 352 0.0492
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.