Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership2,666,968 shares
Latest Disclosed Value $ 1,278,011,168
Baird Financial Group, Inc. reports 2.59% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 2,666,968 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $1,278,011,168 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 65 shares of Berkshire Hathaway Inc.. This represents a change in shares of 2.59% 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)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,666,968 67,246 2.59 1,278,011 -2.20 1.0745
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,599,722 93,452 3.73 1,306,751 3.71 2.0370
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,506,270 70,068 2.88 1,260,002 6.47 2.0262
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,436,202 -8,795 -0.36 1,183,434 -9.12 2.0751
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,444,997 10,568 0.43 1,302,157 18.00 2.5072
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,434,429 76,295 3.24 1,103,478 1.67 2.1104
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC B COMMON 084670702 2,358,134 27,574 1.18 1,085,355 14.48 2.1077
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,330,560 79,165 3.52 948,072 0.14 1.9667
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,251,395 52,343 2.38 946,757 20.71 1.9852
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,199,052 183,205 9.09 784,314 11.07 1.7874
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,015,847 25,712 1.29 706,151 4.05 1.9261
2023-08-11 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 1,990,135 -502,181 -20.15 678,636 -11.81 1.7912
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,492,316 67,750 2.79 769,553 102,781.28 1.8983
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,424,566 127,316 5.54 749 -99.88 1.9722
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,297,250 -16,350 -0.71 613,411 -2.89 1.8074
2022-08-08 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,313,600 22,372 0.98 631,659 -21.88 1.7535
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 2,291,228 24,824 1.10 808,597 19.32 1.9981
2022-02-09 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,266,404 -3,395 -0.15 677,654 9.38 1.5843
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,269,799 52,704 2.38 619,519 0.54 1.5845
2021-08-11 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,217,095 -9,297 -0.42 616,175 8.33 1.6015
2021-05-13 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,226,392 20,296 0.92 568,776 11.19 1.5952
2021-02-11 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,206,096 -38,183 -1.70 511,527 7.04 1.5291
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,244,279 -38,769 -1.70 477,897 17.26 1.6373
2020-10-22 2020-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,283,048 100,991 4.63 407,546 2.16 1.5352
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,096,114 -85,943 437,661 867,344.6668
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 2,182,057 222,899 11.38 398,945 -10.10 1.8219
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON 084670702 1,959,158 20,722 1.07 443,749 10.05 1.5929
2019-11-14 2019-09-30 13F BERKSHIRE HATHAWAY Common 084670702 1,938,436 172,837 9.79 403,233 7.14 1.5882
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY COMMON 084670702 1,765,599 794,189 81.76 376,373 92.87 1.4634
2019-05-14 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 971,410 34,069 3.63 195,147 1.97 1.1411
2019-02-14 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 937,341 53,269 6.03 191,386 0.79 1.2991
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 884,072 34,708 4.09 189,880 19.78 1.1897
2018-08-13 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 849,364 6,267 0.74 158,519 -5.75 1.0759
2018-05-14 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 843,097 -2,186 -0.26 168,181 0.38 1.1842
2018-02-09 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 845,283 2,184 0.26 167,552 8.41 1.1868
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 843,099 4,374 0.52 154,557 8.80 1.1658
2017-08-14 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 838,725 45,549 5.74 142,055 7.45 1.1129
2017-06-19 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 793,176 32,232 4.24 132,207 6.60 1.0692
2017-05-09 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 793,176 132,207
2017-02-10 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 760,944 -139,203 -15.46 124,019 -4.63 1.0769
2016-11-10 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 900,147 702 0.08 130,044 -0.20 1.1649
2016-08-11 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 899,445 15,000 1.70 130,308 3.84 1.1951
2016-05-12 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 884,445 14,185 1.63 125,485 9.20 1.2006
2016-02-11 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 870,260 13,595 1.59 114,909 2.86 1.1493
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 856,665 111,844 15.02 111,709 10.19 1.1877
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL COMMON 084670702 744,821 744,821 101,378 0.9976
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.