Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionElgethun Capital Management
Latest Disclosed Ownership132,203 shares
Latest Disclosed Value $ 63,351,757
Elgethun Capital Management reports 0.21% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Elgethun Capital Management filed a 13F-HR form disclosing ownership of 132,203 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $63,351,757 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 131,927 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.21% 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 132,203 276 0.21 63,352 -4.47 10.4780
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 131,927 1,852 1.42 66,313 2.43 11.4549
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 130,075 10,856 9.11 64,742 11.79 11.7575
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 119,219 -8,802 -6.88 57,913 -15.06 11.6528
2025-05-09 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 128,021 896 0.70 68,182 18.32 15.2343
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 127,125 -1,148 -0.89 57,623 -2.40 13.9879
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 128,273 1,623 1.28 59,039 14.59 13.8601
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 126,650 3,783 3.08 51,521 -0.29 12.9881
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 122,867 805 0.66 51,670 18.68 13.0313
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 122,062 -1,312 -1.06 43,536 1.22 12.3298
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 123,374 1,522 1.25 43,012 3.47 12.9736
2023-08-11 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 121,852 503 0.41 41,572 10.18 12.5293
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 121,349 870 0.72 37,730 1.35 11.9390
2023-02-10 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 120,479 2,358 2.00 37,227 18.02 13.4595
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 118,121 3,819 3.34 31,541 1.88 12.6059
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 114,302 1,035 0.91 30,958 -22.55 12.0055
2022-05-11 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 113,267 2,700 2.44 39,973 20.06 13.5466
2022-02-11 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 110,567 1,262 1.15 33,294 11.54 11.6313
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 109,305 238 0.22 29,849 -1.53 10.3038
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 109,067 3,949 3.76 30,312 12.88 10.4286
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 105,118 6,054 6.11 26,854 16.91 10.4511
2021-02-11 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 99,064 715 0.73 22,970 9.75 9.8083
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 98,349 625 0.64 20,930 21.27 11.4600
2020-08-13 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 97,724 -712 -0.72 17,259 -4.10 10.0344
2020-05-08 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 98,436 7,874 8.69 17,997 -12.31 9.9989
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 90,562 1,495 1.68 20,523 10.75 9.9924
2019-11-08 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 89,067 4,332 5.11 18,531 2.59 9.8667
2019-08-08 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 84,735 3,817 4.72 18,063 11.12 9.8576
2019-05-08 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 80,918 2,386 3.04 16,256 2.02 9.4736
2019-02-11 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 78,532 1,115 1.44 15,934 -4.49 11.0446
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 77,417 454 0.59 16,683 15.53 10.8237
2018-08-09 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 76,963 2,716 3.66 14,440 -2.48 10.2276
2018-05-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 74,247 2,841 3.98 14,807 4.62 10.3588
2018-02-09 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 71,406 -222 -0.31 14,153 7.78 9.9032
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 71,628 2,755 4.00 13,131 12.54 9.6438
2017-08-10 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 68,873 1,998 2.99 11,668 4.67 9.0829
2017-05-11 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 66,875 2,067 3.19 11,147 5.57 8.9369
2017-02-09 2016-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,808 64,808 10,559 8.2515
2017-02-09 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,808 10,559 8.2515
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.