Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership56,654 shares
Latest Disclosed Value $ 27,148,597
Quadrant Capital Group Llc reports 5.54% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 56,654 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $27,148,597 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2 shares of Berkshire Hathaway Inc.. This represents a change in shares of 5.54% 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)
2026-05-13 2026-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,654 2,975 5.54 27,149 0.62 0.8117
2026-05-11 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,654 2,975 49 0.0369
2026-02-12 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 53,679 1,225 2.34 26,982 2.32 0.8152
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 52,454 6,760 14.79 26,371 18.81 0.8572
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,694 11 0.02 22,197 -8.77 0.7989
2025-05-13 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,683 23,357 104.62 24,330 140.43 0.9036
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,326 -34 -0.15 10,120 -1.67 0.6967
2024-11-12 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,360 -69 -0.31 10,291 12.79 0.7150
2024-08-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,429 895 4.16 9,124 0.76 0.6775
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,534 -321 -1.47 9,055 16.18 0.7150
2024-02-08 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,855 508 2.38 7,795 4.24 0.6695
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,347 1,115 5.51 7,478 8.38 0.7487
2023-08-10 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,232 -345 -1.68 6,899 8.59 0.6846
2023-05-11 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,577 1,378 7.18 6,354 7.13 0.6615
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 19,199 2,432 14.50 5,930 32.45 0.6721
2022-11-10 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,767 1,380 8.97 4,477 6.57 0.5920
2022-08-09 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,387 51 0.33 4,201 -22.38 0.5644
2022-05-06 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,336 1,069 7.49 5,412 26.86 0.6553
2022-02-01 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,267 1,542 12.12 4,266 22.83 0.5090
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,725 307 2.47 3,473 0.64 0.4845
2021-08-09 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,418 357 2.96 3,451 12.01 0.5005
2021-05-12 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,061 2,499 26.13 3,081 38.97 0.5000
2021-02-16 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,562 187 1.99 2,217 11.07 0.4117
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,375 -190 -1.99 1,996 16.93 0.4350
2020-08-13 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,565 -6,575 -40.74 1,707 -42.14 0.3778
2020-05-15 2020-03-31 13F Berkshire Hathaway Inc B Com 084670702 16,140 -1,482 -8.41 2,950 -25.43 0.4938
2020-03-19 2019-12-31 13F/A-1 Berkshire Hathaway Inc B Com 084670702 17,622 4,249 31.77 3,956 43.54 0.4771
2020-02-03 2019-12-31 13F Berkshire Hathaway Inc B Com 084670702 17,622 4,249 3,956 13,367.8401
2019-10-24 2019-09-30 13F Berkshire Hathaway Inc B COM 084670702 13,373 633 4.97 2,756 2.23 0.4240
2019-07-24 2019-06-30 13F Berkshire Hathaway Inc B COM 084670702 12,740 -178 -1.38 2,696 4.78 0.4266
2019-04-29 2019-03-31 13F Berkshire Hathaway Inc B COM 084670702 12,918 3,849 42.44 2,573 40.75 0.4521
2019-01-17 2018-12-31 13F Berkshire Hathaway Inc B COM 084670702 9,069 324 3.70 1,828 -1.08 0.4872
2018-10-29 2018-09-30 13F Berkshire Hathaway Inc B COM 084670702 8,745 96 1.11 1,848 16.45 0.5281
2018-08-08 2018-06-30 13F Berkshire Hathaway Inc B COM 084670702 8,649 -28 -0.32 1,587 -6.98 0.5564
2018-05-10 2018-03-31 13F Berkshire Hathaway Inc B COM 084670702 8,677 85 0.99 1,706 1.13 0.6186
2018-01-31 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COM 084670702 8,592 139 1.64 1,687 10.05 0.6726
2017-10-13 2017-09-30 13F Berkshire Hathaway COM 084670702 8,453 -50 -0.59 1,533 19.67 0.6325
2017-08-14 2017-06-30 13F Berkshire Hathaway COM 084670702 8,503 -94 -1.09 1,281 -9.60 0.5663
2017-04-10 2017-03-31 13F Berkshire Hathaway COM 084670702 8,597 338 4.09 1,417 6.46 0.6227
2017-01-11 2016-12-31 13F Berkshire Hathaway COM 084670702 8,259 1,691 25.75 1,331 42.51 0.6676
2016-10-25 2016-09-30 13F Berkshire Hathaway COM 084670702 6,568 242 3.83 934 3.89 0.6093
2016-07-28 2016-06-30 13F Berkshire Hathaway COM 084670702 6,326 103 1.66 899 3.10 0.6184
2016-04-27 2016-03-31 13F Berkshire Hathaway Inc Cl B COM 084670702 6,223 9 0.14 872 7.39 0.5651
2016-01-28 2015-12-31 13F Berkshire Hathaway Inc Cl B COM 084670702 6,214 295 4.98 812 6.28 0.5620
2015-10-28 2015-09-30 13F Berkshire Hathaway Inc Cl B COM 084670702 5,919 109 1.88 764 -2.30 0.5271
2015-08-12 2015-06-30 13F Berkshire Hathaway Inc Cl B COM 084670702 5,810 5,810 782 0.4976
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.