Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionAr Asset Management Inc
Latest Disclosed Ownership22,722 shares
Latest Disclosed Value $ 10,888
Ar Asset Management Inc reports 11.28% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 13, 2026 - Ar Asset Management Inc filed a 13F-HR form disclosing ownership of 22,722 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $10,888 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 20,418 shares of Berkshire Hathaway Inc.. This represents a change in shares of 11.28% 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)
2026-05-13 2026-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 22,722 2,304 11.28 11 0.00 2.1046
2026-02-09 2025-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,418 -100 -0.49 10 0.00 2.0965
2025-11-12 2025-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 10 11.11 2.1739
2025-08-06 2025-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 10 -10.00 2.2151
2025-05-13 2025-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 11 11.11 2.4815
2025-02-03 2024-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 9 0.00 2.1070
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 9 12.50 2.0989
2024-08-12 2024-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 8 0.00 2.0116
2024-05-10 2024-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 9 14.29 2.1038
2024-02-07 2023-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 7 0.00 1.9209
2023-11-06 2023-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 7 16.67 2.0157
2023-08-08 2023-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 7 0.00 1.8776
2023-05-09 2023-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 6 0.00 1.7052
2023-02-01 2022-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 6 -99.89 1.7999
2022-10-31 2022-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 5,479 -2.20 1.6402
2022-08-03 2022-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 5,602 -22.63 1.5832
2022-05-10 2022-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 7,241 18.03 1.8300
2022-02-07 2021-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 6,135 9.55 1.5574
2021-11-04 2021-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 5,600 -1.79 1.5681
2021-08-04 2021-06-30 13F Berkshire Hathaway Inc. Cl B COM 084670702 20,518 0 0.00 5,702 8.78 1.5950
2021-04-30 2021-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 5,242 10.17 1.5665
2021-02-10 2020-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 4,758 8.90 1.5337
2020-11-05 2020-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 4,369 19.27 1.5350
2020-08-03 2020-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 0 0.00 3,663 -2.35 1.3891
2020-05-06 2020-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,518 500 2.50 3,751 -17.27 1.5454
2020-02-12 2019-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,018 0 0.00 4,534 8.89 1.5182
2019-11-05 2019-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670702 20,018 0 0.00 4,164 -2.41 1.4695
2019-08-02 2019-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,018 0 0.00 4,267 6.12 1.5448
2019-05-10 2019-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,018 0 0.00 4,021 -1.61 1.5055
2019-02-08 2018-12-31 13F/A-1 BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,018 4 0.02 4,087 -4.62 1.7550
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,018 4 4,087
2018-11-09 2018-09-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,014 0 0.00 4,285 14.69 1.5766
2018-08-03 2018-06-30 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,014 0 0.00 3,736 -6.41 1.4515
2018-05-08 2018-03-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,014 0 0.00 3,992 0.63 1.6071
2018-02-09 2017-12-31 13F BERKSHIRE HATHAWAY INC. CL B COM 084670207 20,014 0 0.00 3,967 8.12 1.5273
2017-11-03 2017-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 3,669 8.23 1.4536
2017-08-07 2017-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 3,390 1.62 1.3770
2017-05-10 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 3,336 2.27 1.3794
2017-05-10 2017-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 3,336
2017-02-13 2016-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 3,262 12.83 1.3916
2016-11-04 2016-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,891 -0.24 1.2493
2016-08-30 2016-06-30 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,898 2.04 1.2164
2016-08-05 2016-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 2,898
2016-08-30 2016-03-31 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,840 7.45 1.2347
2016-05-06 2016-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 2,840
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,643 1.26 1.2033
2015-11-06 2015-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,610 -4.19 1.1602
2015-08-10 2015-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,724 -5.68 1.1136
2015-05-12 2015-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,888 -3.89 1.1577
2015-02-13 2014-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 3,005 8.68 1.2110
2014-11-10 2014-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,765 9.16 1.1221
2014-08-06 2014-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,533 1.28 1.0164
2014-05-09 2014-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,501 5.39 1.0479
2014-02-10 2013-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,373 4.45 1.0058
2013-11-12 2013-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 0 0.00 2,272 1.43 1.0063
2013-08-14 2013-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670207 20,014 20,014 2,240 1.0033
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.