Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNational Pension Service
Latest Disclosed Ownership2,732,608 shares
Latest Disclosed Value $ 1,309,465,754
National Pension Service reports 2.90% increase in ownership of BRKB / Berkshire Hathaway Inc.

On May 12, 2026 - National Pension Service filed a 13F-HR form disclosing ownership of 2,732,608 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $1,309,465,754 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,655,610 shares of Berkshire Hathaway Inc.. This represents a change in shares of 2.90% 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)
2026-05-12 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,732,608 76,998 2.90 1,309,466 -1.90 0.9944
2026-02-10 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL BERKSHIRE HATHAWAY INC DEL 084670702 2,655,610 108,502 4.26 1,334,842 4.24 0.9883
2025-11-04 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,547,108 77,574 3.14 1,280,533 6.74 0.9944
2025-08-08 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,469,534 83,515 3.50 1,199,626 -5.60 1.0357
2025-05-13 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,386,019 98,263 4.30 1,270,746 22.54 1.2214
2025-02-05 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,287,756 -8,976 -0.39 1,036,994 -1.90 0.9814
2024-10-30 2024-09-30 13F BERKSHIREHATHAWAYINCDEL CLBNEW 084670702 2,296,732 315,915 15.95 1,057,094 31.19 1.0194
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,980,817 40,409 2.08 805,796 -1.25 0.9258
2024-05-14 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,940,408 35,590 1.87 815,980 20.11 0.9792
2024-02-07 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,904,818 34,575 1.85 679,372 1.07 0.9461
2023-11-15 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,870,243 25,030 1.36 672,203 8.13 1.0757
2023-08-16 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,845,213 40,320 2.23 621,671 12.90 1.0028
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,804,893 77,073 4.46 550,637 3.17 1.0026
2023-02-24 2022-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,727,820 15,769 0.92 533,724 15.64 1.0499
2023-02-21 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,727,820 15,769 534 1.0499
2023-02-24 2022-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,712,051 34,697 2.07 461,535 0.78 0.9631
2022-11-18 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,712,051 34,697 461,535 0.9631
2022-08-17 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,677,354 105,541 6.71 457,951 -17.44 0.9439
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,571,813 -37,816 -2.35 554,709 15.26 1.0126
2022-02-15 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,609,629 -69,214 -4.12 481,279 5.03 0.8396
2021-11-18 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,678,843 -10,438 -0.62 458,223 -2.40 0.8725
2021-08-17 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,689,281 21,277 1.28 469,485 10.18 0.8918
2021-05-14 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,668,004 8,708 0.52 426,125 10.76 0.8914
2021-02-19 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,659,296 31,391 1.93 384,741 10.68 0.8772
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,627,905 0 0.00 347,623 19.62 0.9130
2020-08-11 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,627,905 163,269 11.15 290,597 8.52 0.8300
2020-05-27 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,464,636 14,263 0.98 267,779 -18.49 0.9063
2020-02-21 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,450,373 105,592 7.85 328,509 17.43 0.9012
2019-11-15 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,344,781 64,007 5.00 279,741 2.46 0.8852
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,280,774 77,406 6.43 273,023 12.94 0.9125
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,203,368 45,018 3.89 241,745 2.92 0.9299
2019-02-15 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,158,350 64,143 5.86 234,890 0.26 0.9690
2018-11-15 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL A 084670702 1,094,207 11,726 1.08 234,281 15.68 0.9537
2018-08-14 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,082,481 78,304 7.80 202,521 1.10 0.9164
2018-04-13 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,004,177 38,962 4.04 200,313 4.70 0.9929
2018-01-17 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 965,215 32,702 3.51 191,325 11.99 0.9552
2017-10-16 2017-09-30 13F BERKSHIRE HATHAWAY B CL B NEW 084670702 932,513 37,221 4.16 170,846 12.72 0.9401
2017-07-13 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 895,292 80,312 9.85 151,573 11.13 0.9028
2017-04-11 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 814,980 47,388 6.17 136,395 9.03 0.9131
2017-01-18 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 767,592 45,645 6.32 125,102 19.94 0.8558
2016-10-14 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 721,947 57,964 8.73 104,300 8.49 0.8359
2016-08-11 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 663,983 82,160 14.12 96,138 16.46 0.8534
2016-05-16 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 581,823 23,841 4.27 82,549 12.04 0.8268
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 557,982 34,568 6.60 73,676 7.95 0.7738
2015-10-15 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 523,414 80,941 18.29 68,253 13.33 0.8630
2015-07-15 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 442,473 63,106 16.63 60,225 10.00 0.7812
2015-04-15 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 379,367 53,819 16.53 54,750 12.01 0.7911
2015-01-13 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 325,548 -21,359 -6.16 48,881 2.00 0.8250
2014-11-07 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 346,907 346,907 47,922 0.7609
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.