Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionComerica Bank
Latest Disclosed Ownership306,782 shares
Latest Disclosed Value $ 154,204,008
Comerica Bank reports 3.10% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 306,782 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $154,204,008 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 19 shares of Berkshire Hathaway Inc.. This represents a change in shares of -3.10% 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)
2026-01-29 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 306,782 -9,815 -3.10 154,204 -3.12 0.6152
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 316,597 -28,779 -8.33 159,166 -5.13 0.5987
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 345,376 587 0.17 167,773 -8.63 0.6512
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 344,789 897 0.26 183,628 17.80 0.7712
2025-02-14 2024-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 343,892 -13,659 -3.82 155,880 -5.28 0.6286
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 343,892 -13,659 155,880 0.5221
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 357,551 -9,504 -2.59 164,567 10.21 0.6509
2024-08-15 2024-06-30 13F BERKSHIRE HATHAWAY INC CL B COMMON 084670702 367,055 -7,030 -1.88 149,318 -5.08 0.6214
2024-05-16 2024-03-31 13F BERKSHIRE HATHAWAY INC CL B COMMON 084670702 374,085 -9,886 -2.57 157,310 14.87 0.6779
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC CL B COMMON 084670702 383,971 7,866 2.09 136,947 3.95 0.6307
2023-11-21 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL COMMON 084670702 376,105 375,199 41,412.69 131,750 0.6862
2023-08-22 2023-06-30 13F BERKSHIRE HATHAWAY INC CL B EQU 084670702 906 -261,228 -99.65 0 -100.00 0.0004
2023-01-26 2022-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 262,134 -7,176 -2.66 83 -99.89 0.6417
2022-10-28 2022-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 269,310 8,180 3.13 77,421 4.56 0.6527
2022-08-02 2022-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 261,130 -4,020 -1.52 74,043 -19.94 0.6080
2022-04-27 2022-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 265,150 506 0.19 92,489 13.77 0.6713
2022-02-18 2021-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 264,644 -10,620 -3.86 81,296 2.11 0.5983
2021-11-22 2021-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 275,264 -76,830 -21.82 79,617 -20.69 0.4795
2021-08-26 2021-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 352,094 -17,610 -4.76 100,393 -0.16 0.5994
2021-04-28 2021-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 369,704 -18,746 -4.83 100,552 11.14 0.5996
2021-01-28 2020-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 388,450 -33,094 -7.85 90,477 0.90 0.5741
2020-10-30 2020-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 421,544 2,204 0.53 89,667 11.31 0.6509
2020-07-31 2020-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 419,340 17,920 4.46 80,556 7.59 0.6207
2020-05-01 2020-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 401,420 -549 -0.14 74,873 -18.26 0.6868
2020-02-07 2019-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 401,969 -11,189 -2.71 91,600 5.44 0.6938
2019-10-31 2019-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 413,158 2,030 0.49 86,871 1.86 0.6865
2019-08-02 2019-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 411,128 14,216 3.58 85,288 5.06 0.6830
2019-05-02 2019-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 396,912 -14,146 -3.44 81,177 -2.26 0.6580
2019-02-06 2018-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 411,058 -9,213 -2.19 83,054 -3.13 0.7054
2018-11-01 2018-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 420,271 -85,738 -16.94 85,735 -11.02 0.6916
2018-08-01 2018-06-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 506,009 -7,451 -1.45 96,350 -6.35 0.6738
2018-05-01 2018-03-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 513,460 -13,842 -2.63 102,887 -9.50 0.7351
2018-02-02 2017-12-31 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 527,302 -4,635 -0.87 113,692 13.78 0.7574
2017-11-06 2017-09-30 13F BERKSHIRE HATHAWAY INC CL B COM 084670702 531,937 -1,734 -0.32 99,925 9.26 0.7231
2017-08-03 2017-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 533,671 -7,663 -1.42 91,455 1.44 0.6845
2017-05-03 2017-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 541,334 -4,810 -0.88 90,158 1.97 0.6842
2017-02-08 2016-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 546,144 23,135 4.42 88,420 14.83 0.6995
2016-08-11 2016-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 523,009 -10,012 -1.88 76,998 0.70 0.6650
2016-05-11 2016-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 533,021 12,608 2.42 76,463 14.49 0.6827
2016-02-05 2015-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 520,413 -9,360 -1.77 66,785 -3.33 0.6553
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 529,773 -527,615 -49.90 69,083 -52.00 0.6542
2015-08-13 2015-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 1,057,388 510,013 93.17 143,920 82.19 0.6179
2015-05-15 2015-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 547,375 -544,073 -49.85 78,996 -51.80 0.6689
2015-02-13 2014-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 1,091,448 527,571 93.56 163,880 110.39 0.7086
2014-10-21 2014-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 563,877 -13,031 -2.26 77,894 6.69 0.6878
2014-08-12 2014-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 576,908 -142,604 -19.82 73,013 -18.80 0.6208
2014-05-15 2014-03-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 719,512 -13,081 -1.79 89,917 3.53 0.6888
2014-02-11 2013-12-31 13F BERKSHIRE HATHAWAY CL B COM 084670702 732,593 615 0.08 86,855 4.54 0.6733
2013-11-12 2013-09-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 731,978 -23,207 -3.07 83,087 -1.69 0.5782
2013-08-13 2013-06-30 13F/A-1 BERKSHIRE HATHAWAY CL B COM 084670702 755,185 755,185 84,519 0.6891
2013-08-08 2013-06-30 13F BERKSHIRE HATHAWAY CL B COM 084670702 6,561,039 734,304
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.