Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNicolet Bankshares Inc
Latest Disclosed Ownership73,767 shares
Latest Disclosed Value $ 35,308,594
Nicolet Bankshares Inc reports 1,251.79% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Nicolet Bankshares Inc filed a 13F-HR form disclosing ownership of 73,767 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $35,308,594 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 5,457 shares of Berkshire Hathaway Inc.. This represents a change in shares of 1,251.79% 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 73,767 68,310 1,251.79 35,309 1,187.67 1.3026
2026-02-09 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,457 -299 -5.19 2,743 -5.22 0.4396
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,756 -80 -1.37 2,894 2.08 0.4650
2025-08-13 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,836 155 2.73 2,835 -6.31 0.4898
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,681 -44 -0.77 3,026 16.57 0.6075
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,725 -65 -1.12 2,595 -2.59 0.6123
2024-11-12 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 5,790 -411 -6.63 2,665 5.63 0.6453
2024-08-14 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,201 -22 -0.35 2,523 -3.59 0.6255
2024-05-09 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,223 -282 -4.34 2,617 12.76 0.6466
2024-02-13 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,505 78 1.21 2,320 3.07 0.6245
2023-11-09 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,427 50 0.78 2,251 3.54 0.6907
2023-08-09 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,377 -170 -2.60 2,175 7.57 0.6176
2023-05-09 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B Common Stock 084670702 6,547 -315 -4.59 2,022 -4.62 0.6560
2023-02-09 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,862 -55 -0.80 2,120 14.73 0.7297
2022-11-10 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 6,917 -382 -5.23 1,847 -7.33 0.5274
2022-08-08 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B COMMON STOCK 084670702 7,299 149 2.08 1,993 -21.01 0.5194
2022-05-10 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL COMMON STOCK 084670702 7,150 214 3.09 2,523 21.65 0.4698
2022-02-09 2021-12-31 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 6,936 211 3.14 2,074 12.96 0.4573
2021-11-16 2021-09-30 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 6,725 373 5.87 1,836 4.02 0.4735
2021-08-11 2021-06-30 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 6,352 131 2.11 1,765 11.08 0.4640
2021-05-03 2021-03-31 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 6,221 75 1.22 1,589 11.51 0.4386
2021-02-02 2020-12-31 13F BERKSHIRE HATHAWAY COMMON STOCK 084670702 6,146 -299 -4.64 1,425 3.86 0.4393
2020-10-27 2020-09-30 13F BERKSHIRE HATHAWAY Common Stock 084670702 6,445 924 16.74 1,372 39.15 0.4760
2020-07-22 2020-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,521 -47 -0.84 986 -3.14 0.3719
2020-04-22 2020-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,568 355 6.81 1,018 -13.80 0.4591
2020-01-24 2019-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,213 0 0.00 1,181 8.95 0.4367
2019-10-22 2019-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,213 150 2.96 1,084 0.46 0.4339
2019-07-30 2019-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,063 0 0.00 1,079 6.10 0.4505
2019-04-26 2019-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,063 0 0.00 1,017 -1.64 0.4205
2019-02-06 2018-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,063 120 2.43 1,034 -2.27 0.4974
2018-10-29 2018-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,943 -2,384 -32.54 1,058 -22.66 0.4277
2018-07-31 2018-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 7,327 -604 -7.62 1,368 -13.53 0.5748
2018-05-03 2018-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 7,931 425 5.66 1,582 6.32 0.6729
2018-02-02 2017-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 7,506 461 6.54 1,488 15.26 0.6392
2017-11-02 2017-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 7,045 -25 -0.35 1,291 7.85 0.5752
2017-07-27 2017-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 7,070 579 8.92 1,197 10.63 0.5636
2017-04-21 2017-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 6,491 569 9.61 1,082 12.12 0.5687
2017-02-06 2016-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,922 43 0.73 965 13.66 0.5261
2016-11-04 2016-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,879 -75 -1.26 849 -1.51 0.4943
2016-07-28 2016-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,954 0 0.00 862 2.01 0.5648
2016-04-15 2016-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 5,954 1,827 44.27 845 57.65 0.6007
2016-02-16 2015-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 4,127 4,127 536 0.5320
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.