Berkshire Hathaway Inc.
US ˙ NYSE ˙ US0846701086

SecurityBRK.A / Berkshire Hathaway Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership112 shares
Latest Disclosed Value $ 80,431,680
Mercer Global Advisors Inc /adv reports 1.75% decrease in ownership of BRK.A / Berkshire Hathaway Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 112 shares of Berkshire Hathaway Inc. (US:BRK.A) valued at $80,431,680 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 114 shares of Berkshire Hathaway Inc.. This represents a change in shares of -1.75% during the quarter. The current value of the position is $82,157,600 USD.

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 A 084670108 112 -2 -1.75 80,432 -6.53 0.1190
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 114 -5 -4.20 86,047 -4.12 0.1312
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 119 7 6.25 89,750 9.95 0.1498
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 112 31 38.27 81,626 26.21 0.1662
2025-05-15 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 81 61 305.00 64,674 374.91 0.1484
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 20 20 13,618 0.0332
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 0 -10 -100.00 0 -100.00
2024-02-15 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 10 -1 -9.09 5 0.00 0.0163
2023-11-15 2023-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL A 084670108 11 -6 -35.29 6 -37.50 0.0222
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 11 -6 6 0.0222
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 17 1 6.25 9 14.29 0.0349
2023-05-16 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 16 -1 -5.88 7 0.00 0.0338
2023-02-09 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 17 -1 -5.56 8 -99.90 0.0399
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 18 2 12.50 7,316 11.81 0.0434
2022-08-10 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 16 2 14.29 6,543 -11.64 0.0400
2022-05-10 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 14 0 0.00 7,405 17.37 0.0436
2022-02-04 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 14 0 0.00 6,309 9.55 0.0390
2021-11-10 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 14 2 16.67 5,759 14.65 0.0402
2021-08-10 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 12 -1 -7.69 5,023 0.18 0.0386
2021-08-10 2021-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 0.00 5,014 10.88 0.0456
2021-05-11 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 5,014 0.0480
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 0.00 4,522 8.70 0.0565
2020-12-10 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670108 13 0 0.00 4,160 19.71 0.0626
2020-08-10 2020-06-30 13F BERKSHIRE HATHAWAY DEL CL A 084670108 13 0 0.00 3,475 -1.73 0.0631
2020-05-18 2020-03-31 13F BERKSHIRE HATHAWAY DEL CL A 084670108 13 -1 -7.14 3,536 -25.62 0.0778
2020-02-13 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A COM 084670108 14 0 0.00 4,754 8.91 0.0949
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A COM 084670108 14 1 7.69 4,365 5.46 0.1027
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A COM 084670108 13 3 30.00 4,139 37.42 0.1097
2019-04-23 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL A COM 084670108 10 10 3,012 0.1083
2019-04-12 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670108 12 3,672 0.1957
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.