Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionKnightsbridge Asset Management, Llc
Latest Disclosed Ownership3,429 shares
Latest Disclosed Value $ 1,643,177
Knightsbridge Asset Management, Llc reports 0.64% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 15, 2026 - Knightsbridge Asset Management, Llc filed a 13F-HR form disclosing ownership of 3,429 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $1,643,177 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 15, 2026 disclosing 3,451 shares of Berkshire Hathaway Inc.. This represents a change in shares of -0.64% 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)
2026-05-15 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,429 -22 -0.64 1,643 -5.25 0.2212
2026-05-15 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,451 293 9.28 1,735 9.26 0.2794
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,158 456 16.88 1,588 20.96 0.2683
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,702 419 18.35 1,313 7.98 0.2895
2025-05-16 2025-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,283 79 3.58 1,216 21.62 0.3120
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,204 0 999 0.2315
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,204 26 1.19 999 -0.30 0.2315
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,178 -47 -2.11 1,002 10.72 0.2249
2024-08-14 2024-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,225 -148 -6.24 905 6.97 0.2246
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,225 -148 905 0.2246
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,373 0 0.00 846 0.00 0.2394
2024-02-13 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,373 30 1.28 846 0.2394
2023-11-14 2023-09-30 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 2,343 0 0.00 1 0.2603
2023-08-14 2023-06-30 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 2,343 -2,343 -50.00 1 -100.00 0.2571
2023-05-12 2023-03-31 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 4,686 0 0.00 1 0.00 0.2473
2023-02-14 2022-12-31 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 4,686 -84 -1.76 1 -99.92 0.2742
2022-11-14 2022-09-30 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 4,770 70 1.49 1,274 -0.70 0.2678
2022-08-12 2022-06-30 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 4,700 2,737 139.43 1,283 85.14 0.2548
2022-05-13 2022-03-31 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 1,963 -1,562 -44.31 693 -34.25 0.2314
2022-02-14 2021-12-31 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 3,525 -25,192 -87.73 1,054 -86.55 0.3505
2021-11-15 2021-09-30 13F Berkshire Hathaway Inc. Cl B CL B NEW 084670702 28,717 1,084 3.92 7,838 2.06 2.7590
2021-08-16 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 27,633 610 2.26 7,680 11.24 2.9844
2021-05-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 27,023 -1,458 -5.12 6,904 4.54 2.9184
2021-02-17 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,481 -1,134 -3.83 6,604 4.73 3.2333
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,615 -21,399 -41.95 6,306 -30.76 3.6273
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,014 391 0.77 9,107 -1.60 5.8890
2020-05-15 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,623 -541 -1.06 9,255 -20.14 9.3216
2020-02-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,164 106 0.21 11,589 9.11 8.8500
2019-11-14 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,058 -780 -1.50 10,621 -3.88 8.3405
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 51,838 -19,091 -26.92 11,050 -22.45 7.6163
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 70,929 -1,137 -1.58 14,249 -3.16 10.8755
2019-02-14 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 72,066 14,200 24.54 14,714 18.76 10.8145
2018-11-14 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 57,866 -6 -0.01 12,390 14.70 7.6721
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 57,872 -705 -1.20 10,802 -7.56 6.7117
2018-05-21 2018-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 58,577 -458 -0.78 11,685 -0.15 7.2621
2018-05-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 58,577 -458 11,685
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 59,035 14,086 31.34 11,702 42.01 7.3996
2017-11-27 2017-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,949 -49 -0.11 8,240 8.12 5.7290
2017-11-14 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,949 -49 8,240
2017-08-14 2017-06-30 13F BERKSHIRE HATHAWAY DEL CL B NEW 084670702 44,998 105 0.23 7,621 1.84 5.8110
2017-05-15 2017-03-31 13F BERKSHIRE HATHAWAY DEL CL B NEW 084670702 44,893 110 0.25 7,483 2.52 5.8444
2017-02-14 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,783 125 0.28 7,299 13.13 6.8026
2016-11-14 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,658 -1,750 -3.77 6,452 -3.97 6.3032
2016-08-15 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,408 -9,225 -16.58 6,719 -14.87 6.3148
2016-05-16 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 55,633 -2,953 -5.04 7,893 2.03 6.1043
2016-02-16 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 58,586 -4,797 -7.57 7,736 -6.40 5.5024
2015-11-16 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 63,383 63,383 8,265 5.8093
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.