Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionKentucky Retirement Systems
Latest Disclosed Ownership148,613 shares
Latest Disclosed Value $ 17,620
Kentucky Retirement Systems reports 28.33% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 19, 2026 - Kentucky Retirement Systems filed a 13F-HR form disclosing ownership of 148,613 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $17,620 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 115,802 shares of Berkshire Hathaway Inc.. This represents a change in shares of 28.33% 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)
2026-05-19 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,613 32,811 28.33 18 -99.97 1.2903
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 115,802 0 0.00 58,208 -0.02 1.5768
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 115,802 -1,531 -1.30 58,218 2.14 1.6103
2025-08-20 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 117,333 -7,689 -6.15 56,997 -14.40 1.6676
2025-04-22 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 125,022 -856 -0.68 66,584 16.70 2.0299
2025-02-03 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 125,878 -1,734 -1.36 57,058 -2.86 1.6820
2024-11-06 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 127,612 -8,810 -6.46 58,735 5.83 1.7313
2024-08-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 136,422 -1,752 -1.27 55,496 -4.49 1.6077
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 138,174 -7,401 -5.08 58,105 11.91 1.7360
2024-02-08 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 145,575 1,238 0.86 51,921 2.69 1.6207
2023-10-12 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 144,337 956 0.67 50,561 105,235.42 1.7571
2023-08-07 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 143,381 924 0.65 49 11.63 1.6365
2023-05-10 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 142,457 558 0.39 44 0.00 1.6200
2023-02-06 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 141,899 621 0.44 44 -99.89 1.7288
2022-11-16 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 141,278 7,003 5.22 37,724 2.90 1.6002
2022-08-08 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 134,275 17,543 15.03 36,660 -11.01 1.5484
2022-05-09 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 116,732 6,182 5.59 41,196 24.63 1.6881
2022-02-04 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 110,550 2,349 2.17 33,054 11.93 1.3433
2021-11-17 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 108,201 -2,168 -1.96 29,532 -3.72 1.3893
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 110,369 -9,615 -8.01 30,674 0.07 1.4502
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 119,984 -2,263 -1.85 30,652 8.14 1.4985
2021-02-11 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 122,247 6,838 5.93 28,345 15.34 1.4627
2020-11-12 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 115,409 7,183 6.64 24,575 27.21 1.5163
2020-08-12 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 108,226 -25,363 -18.99 19,319 -20.90 1.3556
2020-05-01 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 133,589 32,959 32.75 24,424 7.16 1.6696
2020-02-18 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 100,630 153 0.15 22,793 9.05 1.6592
2019-11-05 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 100,477 10,233 11.34 20,901 8.65 1.6599
2019-08-07 2019-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 90,244 5,227 6.15 19,237 12.64 1.6962
2019-08-07 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 90,244 5,227 19,237
2019-05-22 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 85,017 396 0.47 17,079 -1.15 1.6529
2019-02-25 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 84,621 1,605 1.93 17,278 -2.80 1.8932
2018-11-19 2018-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 83,016 1,298 1.59 17,775 16.53 1.6989
2018-11-16 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,613 66,895 17,620
2018-08-13 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 81,718 -18,724 -18.64 15,253 -23.87 1.5609
2018-05-07 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 100,442 -18,230 -15.36 20,036 -14.82 1.7074
2018-02-13 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 118,672 2,041 1.75 23,523 10.02 1.6751
2017-11-08 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 116,631 -5,134 -4.22 21,381 3.68 1.6144
2017-08-18 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 121,765 -4 -0.00 20,623 1.61 1.5498
2017-05-24 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 121,769 -16,021 -11.63 20,296 -9.62 1.5628
2017-02-24 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 137,790 -50,665 -26.88 22,457 -17.52 1.6067
2016-11-30 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 188,455 29,107 18.27 27,226 18.00 1.8119
2016-09-12 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 159,348 -12,777 -7.42 23,072 -5.52 1.4926
2016-06-09 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 172,125 29,829 20.96 24,421 29.97 1.4821
2016-02-22 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 142,296 13,750 10.70 18,789 12.09 1.3833
2015-11-18 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 128,546 5,489 4.46 16,762 0.08 1.4437
2015-08-26 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 123,057 309 0.25 16,749 -5.45 1.3627
2015-05-29 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 122,748 -12,807 -9.45 17,715 -12.97 1.4381
2015-03-04 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 135,555 -6,270 -4.42 20,354 3.89 1.5009
2014-12-12 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 141,825 -7,396 -4.96 19,592 5.06 1.4377
2014-05-22 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,221 608 0.41 18,648 5.83 1.3470
2014-02-13 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 148,613 -893 -0.60 17,620 3.83 1.2903
2013-11-15 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 149,506 149,506 16,970 1.3668
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.