Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionDe Burlo Group Inc
Latest Disclosed Ownership6,066 shares
Latest Disclosed Value $ 2,906,827
De Burlo Group Inc reports 90.60% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - De Burlo Group Inc filed a 13F-HR form disclosing ownership of 6,066 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $2,906,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 64,561 shares of Berkshire Hathaway Inc.. This represents a change in shares of -90.60% 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 6,066 -58,495 -90.60 2,907 -91.04 0.6587
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,561 7,740 13.62 32,452 13.60 3.9387
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,821 225 0.40 28,566 3.91 3.4422
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,596 -6,804 -10.73 27,493 -18.58 3.6218
2025-05-07 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 63,400 390 0.62 33,766 18.22 4.9851
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 63,010 -26,800 -29.84 28,561 -30.90 3.8116
2024-11-12 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 89,810 9,690 12.09 41,336 26.83 5.0899
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 80,120 75 0.09 32,593 -3.17 4.3810
2024-05-13 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 80,045 74,793 1,424.09 33,661 1,730.34 4.4676
2024-02-13 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,252 0 0.00 1,840 0.00 0.3196
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,252 1,805 52.36 1,840 56.51 0.3196
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,447 910 35.87 1,175 50.06 0.1956
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,537 -83,000 -97.03 783 -97.04 0.1530
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 85,537 -56 -0.07 26,422 -99.88 5.9044
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 85,593 77,525 960.89 22,855,043 1,037,350.89 5.4404
2022-08-11 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,068 -77,525 -90.57 2,203 -99.99 0.6276
2022-05-16 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 85,593 49,300 135.84 30,206,626 278,250.77 5.6255
2022-01-28 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,293 33,520 1,208.80 10,852 1,333.55 1.5762
2021-11-09 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,773 -69,500 -96.16 757 -96.23 0.1227
2021-08-05 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 72,273 58,300 417.23 20,086 462.63 3.1960
2021-05-06 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,973 11,173 399.04 3,570 450.08 0.6388
2021-02-05 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,800 0 0.00 649 8.89 0.1061
2020-11-05 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,800 -500 -15.15 596 -1.16 0.1083
2020-08-06 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,300 0 0.00 603 0.00 0.1690
2020-05-07 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,300 -7,400 -69.16 603 -75.11 0.1690
2020-02-06 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,700 0 0.00 2,423 8.85 0.4896
2019-11-07 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,700 -500 -4.46 2,226 -6.78 0.5013
2019-08-07 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,200 -100 -0.88 2,388 5.20 0.4664
2019-05-09 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,300 -27,000 -70.50 2,270 -70.97 0.4582
2019-02-07 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 38,300 24,600 179.56 7,820 166.62 1.7556
2018-11-08 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,700 0 0.00 2,933 14.70 0.5501
2018-08-10 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,700 -22,850 -62.52 2,557 -64.92 0.5413
2018-05-03 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,550 2,850 8.46 7,290 9.13 1.5872
2018-02-08 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,700 19,900 144.20 6,680 164.14 1.3532
2017-11-02 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,800 -100 -0.72 2,529 7.43 0.5605
2017-08-03 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,900 -66,450 -82.70 2,354 -82.42 0.5254
2017-05-04 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 80,350 -10,624 -11.68 13,392 -9.67 2.9064
2017-02-10 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 90,974 64,900 248.91 14,826 293.68 3.6096
2016-11-10 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 26,074 22,800 696.40 3,766 694.51 1.0447
2016-08-04 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 474 2.16 0.1146
2016-05-05 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 464 7.41 0.1342
2016-02-04 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 432 1.41 0.1017
2015-11-05 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 426 -4.27 0.1000
2015-08-07 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 445 -5.72 0.0931
2015-05-07 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 472 -3.87 0.0934
2015-02-12 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 491 8.63 0.0993
2014-11-07 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 452 9.18 0.0999
2014-08-01 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 0 0.00 414 1.22 0.0937
2014-05-08 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 3,274 774 30.96 409 38.18 0.0986
2014-02-11 2013-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,500 0 0.00 296 4.23 0.0706
2014-02-07 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,500 2,091
2013-11-08 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,500 0 0.00 284 36.54 0.0773
2013-08-09 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,500 2,500 208 0.0710
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.