Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionWebster Bank, N. A.
Latest Disclosed Ownership10,514 shares
Latest Disclosed Value $ 5,038,309
Webster Bank, N. A. reports 1.07% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 17, 2026 - Webster Bank, N. A. filed a 13F-HR form disclosing ownership of 10,514 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $5,038,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 3 shares of Berkshire Hathaway Inc.. This represents a change in shares of -1.07% 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 10,514 -114 -1.07 5,038 -5.69 0.4573
2026-01-23 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,628 -295 -2.70 5,342 -2.71 0.5011
2025-10-23 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,923 -375 -3.32 5,491 0.05 0.5281
2025-07-08 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,298 231 2.09 5,488 -6.89 0.5669
2025-04-04 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,067 -5 -0.05 5,894 17.46 0.6478
2025-01-22 2024-12-31 13F Berkshire Hathaway CL B NEW 084670702 11,072 -66 -0.59 5,019 -2.11 0.5391
2024-10-10 2024-09-30 13F Berkshire Hathaway CL B NEW 084670702 11,138 -208 -1.83 5,126 11.07 0.5453
2024-07-12 2024-06-30 13F Berkshire Hathaway CL B NEW 084670702 11,346 100 0.89 4,616 -2.41 0.5060
2024-04-16 2024-03-31 13F Berkshire Hathaway CL B NEW 084670702 11,246 589 5.53 4,729 24.45 0.5284
2024-01-23 2023-12-31 13F Berkshire Hathaway CL B NEW 084670702 10,657 1,450 15.75 3,801 17.83 0.4654
2023-10-10 2023-09-30 13F Berkshire Hathaway CL B NEW 084670702 9,207 -3 -0.03 3,225 2.71 0.4362
2023-07-13 2023-06-30 13F Berkshire Hathaway CL B NEW 084670702 9,210 -510 -5.25 3,141 4.63 0.4059
2023-04-13 2023-03-31 13F Berkshire Hathaway CL B NEW 084670702 9,720 6,546 206.24 3,001 0.3912
2023-01-18 2022-12-31 13F Berkshire Hathaway CL B NEW 084670702 3,174 -464 -12.75 1 -100.00 0.1325
2022-10-24 2022-09-30 13F Berkshire Hathaway CL B NEW 084670702 3,638 0 0.00 971 -2.22 0.1407
2022-07-12 2022-06-30 13F Berkshire Hathaway CL B NEW 084670702 3,638 -12 -0.33 993 -22.90 0.1355
2022-04-13 2022-03-31 13F Berkshire Hathaway CL B NEW 084670702 3,650 470 14.78 1,288 35.44 0.0924
2022-01-12 2021-12-31 13F Berkshire Hathaway CL B NEW 084670702 3,180 128 4.19 951 14.17 0.0985
2021-10-12 2021-09-30 13F Berkshire Hathaway CL B NEW 084670702 3,052 -8 -0.26 833 -2.00 0.0930
2021-07-20 2021-06-30 13F Berkshire Hathaway CL B NEW 084670702 3,060 -14 -0.46 850 8.28 0.0930
2021-05-07 2021-03-31 13F Berkshire Hathaway CL B NEW 084670702 3,074 -1 -0.03 785 10.10 0.0894
2021-01-07 2020-12-31 13F Berkshire Hathaway CL B NEW 084670702 3,075 0 0.00 713 8.85 0.0838
2020-10-22 2020-09-30 13F Berkshire Hathaway CL B NEW 084670702 3,075 -100 -3.15 655 15.52 0.0860
2020-07-09 2020-06-30 13F Berkshire Hathaway CL B NEW 084670702 3,175 -7 -0.22 567 -2.41 0.0804
2020-04-21 2020-03-31 13F Berkshire Hathaway CL B NEW 084670702 3,182 -23 -0.72 581 -19.97 0.0966
2020-01-14 2019-12-31 13F Berkshire Hathaway CL B NEW 084670702 3,205 0 0.00 726 8.85 0.0928
2019-10-01 2019-09-30 13F Berkshire Hathaway CL B NEW 084670702 3,205 0 0.00 667 -2.34 0.0903
2019-07-11 2019-06-30 13F Berkshire Hathaway CL B NEW 084670702 3,205 0 0.00 683 6.06 0.0940
2019-04-10 2019-03-31 13F Berkshire Hathaway CL B NEW 084670702 3,205 -515 -13.84 644 -15.15 0.0921
2019-01-09 2018-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 3,720 -96 -2.52 759 -7.10 0.1226
2018-10-12 2018-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 3,816 15 0.39 817 15.07 0.1138
2018-07-12 2018-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 3,801 455 13.60 710 6.29 0.1026
2018-04-19 2018-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 3,346 -728 -17.87 668 -17.22 0.0964
2018-01-23 2017-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 4,074 -442 -9.79 807 -2.54 0.1110
2017-10-12 2017-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 4,516 -43 -0.94 828 7.25 0.1203
2017-07-12 2017-06-30 13F Berkshire Hathaway CL B NEW 084670702 4,559 0 0.00 772 1.58 0.1143
2017-05-01 2017-03-31 13F Berkshire Hathaway CL B NEW 084670702 4,559 -210 -4.40 760 -2.31 0.1146
2017-02-15 2016-12-31 13F Berkshire Hathaway CL B NEW 084670702 4,769 -25 -0.52 778 12.43 0.1137
2016-10-14 2016-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,794 705 17.24 692 16.89 0.1007
2016-07-11 2016-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,089 -10 -0.24 592 1.72 0.0868
2016-04-12 2016-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,099 -67 -1.61 582 5.82 0.0909
2016-01-13 2015-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,166 -85 -2.00 550 -0.72 0.0883
2015-11-12 2015-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,251 -115 -2.63 554 -6.73 0.1021
2015-07-09 2015-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,366 -45 -1.02 594 -6.75 0.0994
2015-04-30 2015-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,411 0 0.00 637 -3.78 0.1053
2015-01-15 2014-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,411 -605 -12.06 662 -4.47 0.1110
2014-10-15 2014-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,016 -900 -15.21 693 -7.35 0.1225
2014-07-09 2014-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,916 -7,523 -55.98 748 -55.48 0.1291
2014-04-11 2014-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 13,439 200 1.51 1,680 7.07 0.2321
2014-01-28 2013-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 13,239 -150 -1.12 1,569 3.22 0.2196
2013-11-05 2013-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 13,389 -54,097 -80.16 1,520 -79.88 0.2340
2013-08-06 2013-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 67,486 67,486 7,554 0.9528
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.