Berkshire Hathaway Inc.
BG ˙ BUL
SecurityBG:BRYN / Berkshire Hathaway Inc.
InstitutionMather Group, Llc.
Latest Disclosed Ownership33,365 shares
Latest Disclosed Value $ 15,988,442
Mather Group, Llc. reports 0.04% increase in ownership of BRYN / Berkshire Hathaway Inc.

On April 13, 2026 - Mather Group, Llc. filed a 13F-HR form disclosing ownership of 33,365 shares of Berkshire Hathaway Inc. (BG:BRYN) valued at $15,988,442 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 33,352 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.04% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-13 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,365 13 0.04 15,988 -4.63 0.1595
2026-01-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,352 -336 -1.00 16,764 -1.02 0.1726
2025-10-21 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,688 1,917 6.03 16,936 9.74 0.1710
2025-07-15 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,771 -49 -0.15 15,433 -8.93 0.1648
2025-04-25 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,820 1,304 4.27 16,947 22.51 0.1959
2025-01-27 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 30,516 -265 -0.86 13,832 -2.36 0.1794
2024-10-07 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 30,781 -13,482 -30.46 14,167 -23.89 0.1820
2024-07-09 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,263 13,685 44.75 18,614 70.67 0.2292
2024-04-09 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 30,578 -2,187 -6.67 10,906 -6.67 0.1721
2024-02-05 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,765 290 0.89 11,686 2.73 0.1834
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,475 3,039 10.32 11,376 13.33 0.2019
2023-08-08 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,436 621 2.16 10,038 12.81 0.1600
2023-05-09 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,815 3,195 12.47 8,897 12.42 0.1580
2023-03-10 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 25,620 -441 -1.69 7,914 13.72 0.1524
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 26,061 1,188 4.78 6,959 2.47 0.1498
2022-08-16 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 24,873 8,343 50.47 6,791 16.40 0.1550
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,530 5,905 55.58 5,834 83.63 0.1152
2022-02-15 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,625 588 5.86 3,177 15.99 0.0622
2021-11-04 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,037 471 4.92 2,739 3.01 0.0659
2021-08-13 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,566 571 6.35 2,659 15.71 0.0671
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,995 678 8.15 2,298 19.19 0.0650
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,317 81 0.98 1,928 9.92 0.0629
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,236 -1,539 -15.74 1,754 0.52 0.0689
2020-08-14 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,775 7,364 305.43 1,745 295.69 0.0800
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,411 2,411 441 0.0308
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.