BERKSHIRE HATHAWAY INC DEL

Ticker: BRK/B CUSIP: 084670702 Class: Common Stock

Asset Management One Co., Ltd.'s Holding History (CIK: 0001068855)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 595,890 Value ($000) $298,586 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 586,663 Value ($000) $294,939 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 575,988 Value ($000) $279,798 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 566,320 Value ($000) $301,611 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 527,827 Value ($000) $240,958 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 520,200 Value ($000) $239,427 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 502,455 Value ($000) $204,399 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 500,502 Value ($000) $210,471 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 522,913 Value ($000) $186,978 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 522,742 Value ($000) $183,117 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 524,020 Value ($000) $178,691 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 533,021 Value ($000) $164,581 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 521,585 Value ($000) $161,198 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 535,908 Value ($000) $143,098 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 546,138 Value ($000) $149,106 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 566,149 Value ($000) $199,807 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 605,309 Value ($000) $181,257 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 613,791 Value ($000) $167,536 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 670,352 Value ($000) $186,300 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 662,660 Value ($000) $169,296 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 691,779 Value ($000) $158,862 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 694,177 Value ($000) $147,818 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 720,032 Value ($000) $128,532 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 690,518 Value ($000) $126,246 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 693,503 Value ($000) $157,078 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 697,435 Value ($000) $145,080 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 689,141 Value ($000) $146,905 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 632,173 Value ($000) $126,997 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 2,101,291 Value ($000) $428,498 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 2,055,876 Value ($000) $440,473 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 2,038,911 Value ($000) $380,613 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 1,995,771 Value ($000) $398,117 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 2,004,445 Value ($000) $397,520 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 1,977,203 Value ($000) $362,447 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 1,944,125 Value ($000) $329,269 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 1,927,305 Value ($000) $321,305 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 2,058,695 Value ($000) $335,537 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 254,011 Value ($000) $36,611 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 253,106 Value ($000) $36,392 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 252,602 Value ($000) $35,894 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 250,536 Value ($000) $33,272 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 285,766 Value ($000) $37,117 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 278,482 Value ($000) $37,939 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 284,688 Value ($000) $41,248 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 283,372 Value ($000) $42,734 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 246,821 Value ($000) $34,116 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 227,968 Value ($000) $28,932 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 300,167 Value ($000) $37,353 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 300,476 Value ($000) $35,559 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 298,479 Value ($000) $34,049 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 187,791 Value ($000) $21,158 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	595,890	$298,586	$497.53	$473.15 - $516.85
Q3 2025	586,663	$294,939	$484.36	$455.19 - $507.66
Q2 2025	575,988	$279,798	$507.86	$462.10 - $542.07
Q1 2025	566,320	$301,611	$486.15	$440.10 - $537.63
Q4 2024	527,827	$240,958	$461.73	$437.90 - $491.67
Q3 2024	520,200	$239,427	$442.18	$403.82 - $484.82
Q2 2024	502,455	$204,399	$408.62	$395.66 - $424.52
Q1 2024	500,502	$210,471	$393.34	$355.94 - $430.00
Q4 2023	522,913	$186,978	$350.99	$330.58 - $364.05
Q3 2023	522,742	$183,117	$354.77	$338.41 - $373.34
Q2 2023	524,020	$178,691	$326.37	$307.07 - $342.50
Q1 2023	533,021	$164,581	$308.18	$292.42 - $321.32
Q4 2022	521,585	$161,198	$296.98	$259.85 - $319.56
Q3 2022	535,908	$143,098	$284.56	$261.55 - $308.15
Q2 2022	546,138	$149,106	$313.72	$263.68 - $354.58
Q1 2022	566,149	$199,807	$323.46	$294.81 - $362.10
Q4 2021	605,309	$181,257	$286.41	$272.22 - $301.65
Q3 2021	613,791	$167,536	$280.86	$270.73 - $291.82
Q2 2021	670,352	$186,300	$279.44	$254.80 - $295.08
Q1 2021	662,660	$169,296	$242.84	$226.10 - $267.50
Q4 2020	691,779	$158,862	$220.20	$197.81 - $234.99
Q3 2020	694,177	$147,818	$204.56	$177.34 - $223.24
Q2 2020	720,032	$128,532	$182.62	$167.04 - $203.33
Q1 2020	690,518	$126,246	$212.55	$159.50 - $231.61
Q4 2019	693,503	$157,078	$217.17	$201.33 - $228.23
Q3 2019	697,435	$145,080	$206.04	$195.40 - $216.58
Q2 2019	689,141	$146,905	$206.92	$196.89 - $219.16
Q1 2019	632,173	$126,997	$201.85	$191.04 - $209.40
Q4 2018	2,101,291	$428,498	$208.87	$186.10 - $224.07
Q3 2018	2,055,876	$440,473	$205.18	$185.72 - $223.00
Q2 2018	2,038,911	$380,613	$194.92	$184.75 - $202.77
Q1 2018	1,995,771	$398,117	$205.34	$189.30 - $217.62
Q4 2017	2,004,445	$397,520	$189.88	$180.44 - $200.50
Q3 2017	1,977,203	$362,447	$176.72	$168.00 - $184.00
Q2 2017	1,944,125	$329,269	$166.33	$160.93 - $171.95
Q1 2017	1,927,305	$321,305	$167.31	$158.61 - $177.86
Q4 2016	2,058,695	$335,537	$153.96	$141.92 - $167.25
Q3 2016	254,011	$36,611	$146.25	$140.95 - $151.05
Q2 2016	253,106	$36,392	$142.96	$136.65 - $148.03
Q1 2016	252,602	$35,894	$132.58	$123.55 - $143.40
Q4 2015	250,536	$33,272	$134.20	$127.46 - $138.62
Q3 2015	285,766	$37,117	$137.00	$125.50 - $144.69
Q2 2015	278,482	$37,939	$142.63	$136.08 - $148.57
Q1 2015	284,688	$41,248	$147.14	$142.50 - $151.69
Q4 2014	283,372	$42,734	$144.37	$132.03 - $152.94
Q3 2014	246,821	$34,116	$133.21	$122.72 - $142.45
Q2 2014	227,968	$28,932	$126.57	$121.09 - $129.73
Q1 2014	300,167	$37,353	$116.85	$108.12 - $125.91
Q4 2013	300,476	$35,559	$115.63	$110.84 - $118.66
Q3 2013	298,479	$34,049	$115.36	$110.72 - $119.30
Q2 2013	187,791	$21,158	$110.02	$102.69 - $115.98