Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionDavis R M Inc
Latest Disclosed Ownership257,674 shares
Latest Disclosed Value $ 123,477,179
Davis R M Inc reports 0.02% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 13, 2026 - Davis R M Inc filed a 13F-HR form disclosing ownership of 257,674 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $123,477,179 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 257,727 shares of Berkshire Hathaway Inc.. This represents a change in shares of -0.02% 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)
2026-05-13 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 257,674 -53 -0.02 123,477 -4.68 2.1914
2026-02-12 2025-12-31 13F Berkshire Hathaway Inc-B COM 084670702 257,727 -1,596 -0.62 129,546 -0.63 2.2303
2025-11-12 2025-09-30 13F Berkshire Hathaway Inc-B COM 084670702 259,323 3,022 1.18 130,372 4.71 2.2791
2025-08-07 2025-06-30 13F Berkshire Hathaway Inc-B COM 084670702 256,301 2,765 1.09 124,503 -7.79 2.3086
2025-05-08 2025-03-31 13F Berkshire Hathaway Inc-B COM 084670702 253,536 -572 -0.23 135,028 17.23 2.7036
2025-02-07 2024-12-31 13F Berkshire Hathaway Inc-B COM 084670702 254,108 -1,069 -0.42 115,182 -1.93 2.2477
2024-11-13 2024-09-30 13F Berkshire Hathaway Inc-B COM 084670702 255,177 -502 -0.20 117,448 12.92 2.2696
2024-08-09 2024-06-30 13F Berkshire Hathaway Inc-B COM 084670702 255,679 -650 -0.25 104,010 -3.51 2.1118
2024-05-10 2024-03-31 13F Berkshire Hathaway Inc-B COM 084670702 256,329 -568 -0.22 107,791 17.64 2.2566
2024-02-09 2023-12-31 13F Berkshire Hathaway Inc-B COM 084670702 256,897 -7,808 -2.95 91,625 99,491.30 2.1138
2023-11-14 2023-09-30 13F Berkshire Hathaway Inc-B COM 084670702 264,705 -4,792 -1.78 93 1.10 2.3262
2023-08-10 2023-06-30 13F Berkshire Hathaway Inc-B COM 084670702 269,497 -1,065 -0.39 92 9.64 2.2073
2023-05-01 2023-03-31 13F Berkshire Hathaway Inc-B COM 084670702 270,562 -793 -0.29 84 0.00 2.1274
2023-02-14 2022-12-31 13F Berkshire Hathaway Inc-B COM 084670702 271,355 3,420 1.28 84 -99.88 2.2592
2022-11-08 2022-09-30 13F Berkshire Hathaway Inc-B COM 084670702 267,935 1,261 0.47 71,544 -1.73 2.0751
2022-08-08 2022-06-30 13F Berkshire Hathaway Inc-B COM 084670702 266,674 1,627 0.61 72,807 -22.16 2.0299
2022-05-05 2022-03-31 13F Berkshire Hathaway Inc-B COM 084670702 265,047 3,684 1.41 93,538 19.69 2.2273
2022-02-08 2021-12-31 13F Berkshire Hathaway Inc-B COM 084670702 261,363 4,260 1.66 78,148 11.36 1.7417
2021-11-08 2021-09-30 13F Berkshire Hathaway Inc-B COM 084670702 257,103 1,319 0.52 70,174 -1.28 1.7401
2021-08-12 2021-06-30 13F Berkshire Hathaway Inc-B COM 084670702 255,784 -872 -0.34 71,087 8.42 1.7871
2021-05-10 2021-03-31 13F Berkshire Hathaway Inc-B COM 084670702 256,656 2,692 1.06 65,568 11.35 1.8016
2021-01-27 2020-12-31 13F Berkshire Hathaway Inc-B COM 084670702 253,964 7,269 2.95 58,887 12.10 1.6900
2020-12-01 2020-09-30 13F Berkshire Hathaway Inc-B COM 084670702 246,695 2,360 0.97 52,531 20.44 1.7168
2020-07-20 2020-06-30 13F Berkshire Hathaway Inc-B COM 084670702 244,335 -5,031 -2.02 43,616 -4.33 1.5543
2020-04-24 2020-03-31 13F Berkshire Hathaway Inc-B COM 084670702 249,366 -2,033 -0.81 45,592 -19.93 1.8947
2020-01-23 2019-12-31 13F Berkshire Hathaway Inc-B COM 084670702 251,399 -3,517 -1.38 56,942 7.38 1.8668
2019-10-24 2019-09-30 13F Berkshire Hathaway Inc-B COM 084670702 254,916 8,831 3.59 53,028 1.09 1.8678
2019-07-31 2019-06-30 13F Berkshire Hathaway Inc-B COM 084670702 246,085 5,717 2.38 52,458 8.64 1.8667
2019-04-29 2019-03-31 13F Berkshire Hathaway Inc-B COM 084670702 240,368 13,401 5.90 48,288 4.20 1.7973
2019-01-18 2018-12-31 13F Berkshire Hathaway Inc-B COM 084670702 226,967 17,257 8.23 46,342 3.21 1.8972
2018-10-17 2018-09-30 13F Berkshire Hathaway Inc-B COM 084670702 209,710 12,407 6.29 44,901 21.92 1.6293
2018-07-19 2018-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 197,303 12,947 7.02 36,827 0.14 1.4328
2018-04-19 2018-03-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 184,356 11,197 6.47 36,775 7.14 1.4657
2018-01-16 2017-12-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 173,159 12,819 7.99 34,324 16.77 1.3460
2017-10-24 2017-09-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 160,340 18,475 13.02 29,394 22.33 1.2148
2017-07-31 2017-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 141,865 23,414 19.77 24,028 21.70 1.0156
2017-05-03 2017-03-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 118,451 46,539 64.72 19,743 68.46 0.8925
2017-01-18 2016-12-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 71,912 46,110 178.71 11,720 214.38 0.5601
2016-10-19 2016-09-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 25,802 6,151 31.30 3,728 31.04 0.1819
2016-07-14 2016-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 19,651 -97 -0.49 2,845 1.53 0.1398
2016-04-18 2016-03-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 19,748 -614 -3.02 2,802 4.20 0.1427
2016-01-14 2015-12-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,362 -669 -3.18 2,689 -1.93 0.1375
2015-10-16 2015-09-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 21,031 1,557 8.00 2,742 3.43 0.1465
2015-07-16 2015-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 19,474 -713 -3.53 2,651 -8.99 0.1369
2015-04-17 2015-03-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,187 -840 -3.99 2,913 -7.73 0.1532
2015-01-23 2014-12-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 21,027 1,761 9.14 3,157 18.64 0.1740
2014-10-20 2014-09-30 13F/A-2 BERKSHIRE HATHAWAY INC-B COM 084670702 19,266 -1,585 -7.60 2,661 0.83 0.1528
2014-10-20 2014-09-30 13F/A-1 BERKSHIRE HATHAWAY INC-B COM 084670702 19,266 0 2,661 0.1528
2014-10-20 2014-09-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,851 2,639
2014-07-15 2014-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,851 -150 -0.71 2,639 0.57 0.1518
2014-04-15 2014-03-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 21,001 -190 -0.90 2,624 4.46 0.1594
2014-01-27 2013-12-31 13F BERKSHIRE HATHAWAY INC-B COM 084670702 21,191 420 2.02 2,512 6.53 0.1537
2013-10-23 2013-09-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,771 460 2.26 2,358 3.74 0.1590
2013-08-12 2013-06-30 13F BERKSHIRE HATHAWAY INC-B COM 084670702 20,311 20,311 2,273 0.1622
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.