Warren Buffett - Berkshire Hathaway Inc
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    29
Portfolio value:    $263,095,703,570
Holdings Activity Buys Sells    History
Holding/activity history for  Costco Co. (COST)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2020   Q3 0 0.00 Sell 100.00% 0.65 SEC
2020   Q2 4,333,363 0.65 $303.21 $1,313,919,000 SEC
2020   Q1 4,333,363 0.70 $285.13 $1,235,572,000 SEC
2019   Q4 4,333,363 0.53 $293.92 $1,273,662,000 SEC
2019   Q3 4,333,363 0.58 $288.11 $1,248,485,000 SEC
2019   Q2 4,333,363 0.55 $264.26 $1,145,135,000 SEC
2019   Q1 4,333,363 0.53 $242.14 $1,049,281,000 SEC
2018   Q4 4,333,363 0.48 $203.71 $882,749,000 SEC
2018   Q3 4,333,363 0.46 $234.88 $1,017,820,000 SEC
2018   Q2 4,333,363 0.46 $208.98 $905,586,000 SEC
2018   Q1 4,333,363 0.43 $188.43 $816,536,000 SEC
2017   Q4 4,333,363 0.42 $186.12 $806,526,000 SEC
2017   Q3 4,333,363 0.40 $164.29 $711,928,000 SEC
2017   Q2 4,333,363 0.43 $159.93 $693,035,000 SEC
2017   Q1 4,333,363 0.45 $167.69 $726,662,000 SEC
2016   Q4 4,333,363 0.47 $160.11 $693,815,000 SEC
2016   Q3 4,333,363 0.51 $152.51 $660,881,000 SEC
2016   Q2 4,333,363 0.52 $157.04 $680,511,000 SEC
2016   Q1 4,333,363 0.53 $157.58 $682,851,000 SEC
2015   Q4 4,333,363 0.53 $161.50 $699,838,000 SEC
2015   Q3 4,333,363 0.49 $144.57 $626,474,000 SEC
2015   Q2 4,333,363 0.55 $135.06 $585,264,000 SEC
2015   Q1 4,333,363 0.61 $151.50 $656,483,000 SEC
2014   Q4 4,333,363 0.56 $141.75 $614,254,000 SEC
2014   Q3 4,333,363 0.50 $125.32 $543,057,000 SEC
2014   Q2 4,333,363 0.46 $115.16 $499,030,000 SEC
2014   Q1 4,333,363 0.46 $111.68 $483,950,000 SEC
2013   Q4 4,333,363 0.49 $119.02 $515,757,000 SEC
2013   Q3 4,333,363 0.55 $115.17 $499,073,000 SEC
2013   Q2 4,333,363 0.54 $110.57 $479,140,000 SEC
2013   Q1 4,333,363 0.55 $106.11 $459,813,000 SEC
2012   Q4 4,333,363 0.58 $98.73 $427,833,000 SEC
2012   Q3 4,333,363 0.59 $100.16 $434,030,000 SEC
2012   Q2 4,333,363 0.57 $95.00 $411,669,000 SEC
2011   Q4 4,333,363 0.56 $83.32 $361,056,000 SEC
2011   Q3 4,333,363 0.61 $82.13 $355,899,000 SEC
2011   Q2 4,333,363 0.68 $81.24 $352,042,000 SEC
2011   Q1 4,333,363 0.60 $73.32 $317,722,000 SEC
2010   Q4 4,333,363 0.60 $72.21 $312,912,000 SEC
2010   Q3 4,333,363 0.58 $64.49 $279,459,000 SEC
2010   Q2 4,333,363 0.52 $54.83 $237,598,000 SEC
2010   Q1 4,333,363 0.52 Reduce 17.52% 0.09 $59.71 $258,745,000 SEC
2009   Q4 5,254,000 0.54 $59.17 $310,879,000 SEC
2009   Q3 5,254,000 0.53 $56.38 $296,221,000 SEC
2009   Q2 5,254,000 0.50 $45.78 $240,528,000 SEC
2009   Q1 5,254,000 0.61 $46.32 $243,365,000 SEC
2008   Q4 5,254,000 0.54 $52.50 $275,835,000 SEC
2008   Q3 5,254,000 0.60 $64.93 $341,142,000 SEC
2008   Q2 5,254,000 0.65 $70.14 $368,516,000 SEC
2008   Q1 5,254,000 0.53 $64.97 $341,352,000 SEC
2007   Q4 5,254,000 0.55 $69.76 $366,519,000 SEC
2007   Q3 5,254,000 0.51 $61.37 $322,438,000 SEC
2007   Q2 5,254,000 0.53 $58.52 $307,464,000 SEC
2007   Q1 5,254,000 0.51 $53.84 $282,875,000 SEC
2006   Q4 5,254,000 0.55 $52.87 $277,779,000 SEC
2006   Q3 5,254,000 0.55 $49.68 $261,019,000 SEC
2006   Q2 5,254,000 0.71 $58.27 $306,161,000 SEC
2006   Q1 5,254,000 0.65 $54.16 $284,557,000 SEC
2005   Q4 5,254,000 0.64 $49.47 $259,915,000 SEC
2005   Q3 5,254,000 0.72 $43.09 $226,395,000 SEC
2005   Q2 5,254,000 0.71 $44.73 $235,011,000 SEC
2005   Q1 5,254,000 0.71 $44.18 $232,122,000 SEC
2004   Q4 5,254,000 0.77 $48.41 $254,346,000 SEC
2004   Q3 5,254,000 0.70 $41.51 $218,094,000 SEC
2004   Q2 5,254,000 0.74 $41.18 $216,360,000 SEC
2004   Q1 5,254,000 0.59 $37.61 $197,603,000 SEC
2003   Q4 5,254,000 0.60 $37.18 $195,344,000 SEC
2003   Q3 5,254,000 0.56 Buy 0.56 $31.15 $163,662,000 SEC
2003   Q2 0 0.00 Sell 100.00% 0.64 SEC
2003   Q1 5,254,000 0.64 $30.03 $157,778,000 SEC
2002   Q4 5,254,000 0.57 Reduce 6.29% 0.04 $28.06 $147,427,000 SEC
2002   Q3 5,606,409 0.70 Buy 0.70 $32.37 $181,479,000 SEC
2000   Q3 0 0.00 Sell 100.00% 21.44 SEC
2000   Q2 21,505,000 21.44 Buy 21.44 $33.00 $709,665,000 SEC