Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNational Asset Management, Inc.
Latest Disclosed Ownership23,814 shares
Latest Disclosed Value $ 11,303,387
National Asset Management, Inc. reports 27.83% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 24, 2026 - National Asset Management, Inc. filed a 13F-HR form disclosing ownership of 23,814 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $11,303,387 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 32,998 shares of Berkshire Hathaway Inc.. This represents a change in shares of -27.83% 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)
2026-04-24 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,814 -9,184 -27.83 11,303 -31.85 0.7158
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,998 -77 -0.23 16,587 -0.25 0.7654
2025-10-31 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,075 -2,563 -7.19 16,628 -3.95 0.7691
2025-08-19 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,638 -18,113 -33.70 17,312 -28.95 0.8126
2025-02-25 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 53,751 -6,394 -10.63 24,364 -11.55 0.7986
2024-12-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 60,145 -10,427 -14.77 27,545 -4.05 0.7661
2024-12-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 60,145 27,545
2024-08-19 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 70,572 -7,337 -9.42 28,709 5.19 0.7308
2024-05-16 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 77,909 5,171 7.11 27,292 5.20 0.7381
2024-03-15 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 72,738 -5,171 -6.64 25,943 -4.94 0.6985
2023-12-01 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 77,909 -137,470 -63.83 27,292 -62.84 0.7381
2023-07-27 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 215,379 140,985 189.51 73,444 219.74 1.6476
2023-05-17 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 74,394 540 0.73 22,971 0.69 0.6120
2023-03-15 2022-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 73,854 9,133 14.11 22,814 31.99 0.6392
2023-02-21 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 75,097 10,376 23,197 0.5837
2022-11-22 2022-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,721 18,148 38.97 17,284 35.91 0.5220
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 64,721 18,148 17,284 0.2508
2022-08-12 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,573 -6,616 -12.44 12,717 -32.26 0.5351
2022-05-02 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 53,189 2,772 5.50 18,773 24.53 0.6146
2022-01-28 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,417 -523 -1.03 15,075 8.42 0.4343
2021-11-16 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,940 597 1.19 13,904 -0.63 0.4423
2021-08-10 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,343 -3,874 -7.15 13,992 1.01 0.4545
2021-05-13 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 54,217 16,226 42.71 13,852 57.21 0.4898
2021-02-04 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,991 2,520 7.10 8,811 16.62 0.4713
2020-11-09 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,471 -677 -1.87 7,555 17.04 0.4027
2020-07-31 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,148 -241 -0.66 6,455 -3.01 0.4311
2020-05-06 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,389 480 1.34 6,655 -18.20 0.5679
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,909 -2,787 -7.20 8,136 1.06 0.6922
2019-11-12 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 38,696 1,845 5.01 8,051 2.47 0.7928
2019-08-05 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,851 109 0.30 7,857 6.42 0.8610
2019-05-08 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,742 -7,825 -17.56 7,383 -18.88 0.9220
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 44,567 -3,106 -6.52 9,101 -10.86 1.2952
2018-11-08 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 47,673 5,179 12.19 10,210 28.70 1.2153
2018-10-04 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 42,494 5,525 14.94 7,933 7.55 1.0482
2018-05-15 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 36,969 1,144 3.19 7,376 3.84 1.0326
2018-02-15 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,825 1,393 4.05 7,103 12.51 0.9598
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 34,432 -18 -0.05 6,313 8.17 1.0489
2017-08-15 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 34,450 2,166 6.71 5,836 8.44 1.0584
2017-05-15 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,284 499 1.57 5,382 3.88 1.0734
2017-02-14 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 31,785 -3,366 -9.58 5,181 1.99 1.0530
2016-11-14 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,151 35,151 0.00 5,080 0.9964
2016-08-15 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -23,196 -100.00 0 -100.00
2016-05-16 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,196 -1,047 -4.32 3,291 2.78 0.7611
2016-02-16 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 24,243 829 3.54 3,202 4.85 0.6484
2015-11-16 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,414 2,403 11.44 3,054 6.75 0.7336
2015-08-17 2015-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,011 -7,105 -25.27 2,861 -29.50 0.7109
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,011 2,861
2015-05-14 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,116 439 1.59 4,058 -45.49 0.9891
2015-02-18 2014-12-31 13F Berkshire Hathaway Lg Cap Gwth 084670702 27,677 410 1.50 7,445 97.69 0.1591
2014-11-20 2014-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 27,267 -22,548 -45.26 3,766 18.43 0.9800
2014-11-14 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 27,267 3,766
2014-08-14 2014-06-30 13F Berkshire Hathaway Cl B Large Value 084670702 49,815 26,171 110.69 3,180 7.61 0.7468
2014-05-02 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,644 13,638 136.30 2,955 149.16 0.8932
2014-01-21 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 10,006 4,871 94.86 1,186 103.43 0.3788
2013-10-21 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,135 -564 -9.90 583 -8.62 0.1993
2013-08-22 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,699 5,699 638 0.2165
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.