Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionEnterprise Financial Services Corp
Latest Disclosed Ownership4,306 shares
Latest Disclosed Value $ 2,063,434
Enterprise Financial Services Corp reports 2.62% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 5, 2026 - Enterprise Financial Services Corp filed a 13F-HR form disclosing ownership of 4,306 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $2,063,434 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 4,422 shares of Berkshire Hathaway Inc.. This represents a change in shares of -2.62% 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)
2026-05-05 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,306 -116 -2.62 2,063 -7.16 0.5803
2026-01-14 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,422 29 0.66 2,223 0.63 0.6248
2025-10-15 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,393 -8 -0.18 2,209 3.32 1.1385
2025-08-12 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,401 53 1.22 2,138 -7.69 1.1409
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,348 -30 -0.69 2,316 16.68 1.3692
2025-02-07 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,378 -1,257 -22.31 1,984 -23.49 1.1040
2024-11-12 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,635 -96 -1.68 2,594 11.24 1.5115
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,731 1,057 22.61 2,331 18.63 1.4353
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,674 -181 -3.73 1,966 13.52 1.1831
2024-02-09 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,855 -240 -4.71 1,732 -2.97 1.0551
2023-10-31 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,095 171 3.47 1,785 6.25 1.2333
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,924 326 7.09 1,679 18.32 1.0680
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 4,598 -1,612 -25.96 1,420 -26.02 0.9274
2023-02-14 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,210 -433 -6.52 1,918 8.12 1.3246
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,643 923 16.14 1,774 13.65 1.3223
2022-08-09 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,720 -1,416 -19.84 1,561 -38.01 0.3041
2022-05-16 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,136 -187 -2.55 2,518 14.98 0.4132
2022-02-14 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,323 -3,546 -32.62 2,190 -26.16 0.3360
2021-11-15 2021-09-30 13F Berkshire Hatha Cl B Common Stock 084670702 10,869 4,433 68.88 2,966 65.88 0.3839
2021-08-16 2021-06-30 13F Berkshire Hatha Cl B Common Stock 084670702 6,436 1,468 29.55 1,788 40.90 0.2859
2021-05-13 2021-03-31 13F Berkshire Hatha Cl B Common Stock 084670702 4,968 14 0.28 1,269 10.44 0.2264
2021-02-12 2020-12-31 13F Berkshire Hatha Cl B Common Stock 084670702 4,954 486 10.88 1,149 20.82 0.2183
2020-11-13 2020-09-30 13F Berkshire Hatha Cl B Common Stock 084670702 4,468 -107 -2.34 951 16.26 0.1966
2020-08-04 2020-06-30 13F Berkshire Hatha Cl B Common Stock 084670702 4,575 -2,528 -35.59 818 -37.03 0.1764
2020-05-15 2020-03-31 13F Berkshire Hatha Cl B Common Stock 084670702 7,103 -243 -3.31 1,299 -21.94 0.3277
2020-01-28 2019-12-31 13F Berkshire Hatha Cl B Common Stock 084670702 7,346 -2,225 -23.25 1,664 -16.38 0.3625
2019-10-31 2019-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,571 -27 -0.28 1,990 -2.69 0.4531
2019-07-30 2019-06-30 13F Berkshire Hatha Cl B Common Stock 084670702 9,598 -337 -3.39 2,045 2.51 0.4442
2019-04-26 2019-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,935 633 6.80 1,995 5.06 0.4354
2019-01-25 2018-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,302 -186 -1.96 1,899 -6.55 1.1979
2018-10-26 2018-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,488 -554 -5.52 2,032 8.43 1.0652
2018-07-27 2018-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 10,042 -118 -1.16 1,874 -7.50 0.9503
2018-04-27 2018-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 10,160 -1 -0.01 2,026 0.55 1.0432
2018-01-26 2017-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 10,161 1,081 11.91 2,015 21.09 0.9795
2017-10-27 2017-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,080 41 0.45 1,664 8.69 0.8233
2017-07-28 2017-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,039 -198 -2.14 1,531 -0.58 0.7640
2017-04-27 2017-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,237 140 1.54 1,540 3.91 0.7591
2017-01-26 2016-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,097 25 0.28 1,482 13.13 0.7453
2016-10-28 2016-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,072 -82 -0.90 1,310 -1.13 0.7418
2016-07-29 2016-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 9,154 2,644 40.61 1,325 43.40 0.7805
2016-04-29 2016-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 6,510 115 1.80 924 9.48 0.5573
2016-01-29 2015-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 6,395 24 0.38 844 1.56 0.5006
2015-10-29 2015-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 6,371 1,092 20.69 831 15.58 0.5315
2015-07-27 2015-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,279 -332 -5.92 719 -11.23 0.4250
2015-04-29 2015-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,611 0 0.00 810 -3.80 0.4758
2015-01-23 2014-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,611 805 16.75 842 26.81 0.5097
2014-10-24 2014-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,806 -182 -3.65 664 5.23 0.4206
2014-07-24 2014-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,988 0 0.00 631 1.28 0.3764
2014-04-24 2014-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,988 -10 -0.20 623 5.06 0.3825
2014-01-30 2013-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,998 -200 -3.85 593 0.51 0.3438
2013-10-25 2013-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,198 248 5.01 590 6.50 0.3727
2013-07-25 2013-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,950 4,950 554 0.3800
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.