William Frels - Mairs & Power Inc
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    245
Portfolio value:    $9,786,094,433
Holdings Activity Buys Sells    History
Holding/activity history for  Costco Co. (COST)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2026   Q1 2,963 0.03 Add 1.02% <0.01 $996.43 $2,952,422 SEC
2025   Q4 2,933 0.02 Reduce 8.94% <0.01 $862.34 $2,529,243 SEC
2025   Q3 3,221 0.03 Add 1.04% <0.01 $925.63 $2,981,454 SEC
2025   Q2 3,188 0.03 Add 18.07% <0.01 $989.94 $3,155,929 SEC
2025   Q1 2,700 0.03 Reduce 1.42% <0.01 $945.78 $2,553,606 SEC
2024   Q4 2,739 0.02 Reduce 11.56% <0.01 $916.27 $2,509,664 SEC
2024   Q3 3,097 0.03 Reduce 17.06% <0.01 $886.52 $2,745,552 SEC
2024   Q2 3,734 0.03 Reduce 18.45% <0.01 $849.99 $3,173,863 SEC
2024   Q1 4,579 0.03 Reduce 7.23% <0.01 $732.63 $3,354,713 SEC
2023   Q4 4,936 0.03 Add 43.07% <0.01 $660.08 $3,258,155 SEC
2023   Q3 3,450 0.02 Reduce 4.83% <0.01 $564.96 $1,949,112 SEC
2023   Q2 3,625 0.02 Add 0.58% <0.01 $538.38 $1,951,628 SEC
2023   Q1 3,604 0.02 Add 15.11% <0.01 $496.87 $1,790,719 SEC
2022   Q4 3,131 0.02 $456.50 $1,429,302 SEC
2022   Q3 3,131 0.02 Reduce 1.42% <0.01 $472.37 $1,479,000 SEC
2022   Q2 3,176 0.02 Reduce 0.06% $479.22 $1,522,000 SEC
2022   Q1 3,178 0.02 Add 0.13% $575.83 $1,830,000 SEC
2021   Q4 3,174 0.02 Add 19.50% <0.01 $567.74 $1,802,000 SEC
2021   Q3 2,656 0.01 Reduce 17.95% <0.01 $449.17 $1,193,000 SEC
2021   Q2 3,237 0.01 Reduce 2.44% <0.01 $395.74 $1,281,000 SEC
2021   Q1 3,318 0.01 Reduce 3.32% <0.01 $352.62 $1,170,000 SEC
2020   Q4 3,432 0.01 Add 2.39% <0.01 $376.75 $1,293,000 SEC
2020   Q3 3,352 0.01 Reduce 4.04% <0.01 $355.01 $1,190,000 SEC
2020   Q2 3,493 0.01 $303.18 $1,059,000 SEC
2020   Q1 3,493 0.01 $285.14 $996,000 SEC
2019   Q4 3,493 0.01 Add 1.16% <0.01 $294.02 $1,027,000 SEC
2019   Q3 3,453 0.01 Add 0.91% <0.01 $288.16 $995,000 SEC
2019   Q2 3,422 0.01 Reduce 0.90% <0.01 $264.17 $904,000 SEC
2019   Q1 3,453 0.01 Reduce 1.96% <0.01 $242.11 $836,000 SEC
2018   Q4 3,522 0.01 $203.58 $717,000 SEC
2018   Q3 3,522 0.01 Reduce 4.08% <0.01 $234.81 $827,000 SEC
2018   Q2 3,672 0.01 Add 5.76% <0.01 $208.88 $767,000 SEC
2018   Q1 3,472 0.01 Add 20.72% <0.01 $188.36 $654,000 SEC
2017   Q4 2,876 0.01 Reduce 4.20% <0.01 $186.02 $535,000 SEC
2017   Q3 3,002 0.01 Reduce 1.77% <0.01 $164.22 $493,000 SEC
2017   Q2 3,056 0.01 Reduce 1.48% <0.01 $160.01 $489,000 SEC
2017   Q1 3,102 0.01 Reduce 4.99% <0.01 $167.63 $520,000 SEC
2016   Q4 3,265 0.01 Add 0.80% <0.01 $160.18 $523,000 SEC
2016   Q3 3,239 0.01 Add 11.77% <0.01 $152.52 $494,000 SEC
2016   Q2 2,898 0.01 $157.00 $455,000 SEC
2016   Q1 2,898 0.01 $157.69 $457,000 SEC
2015   Q4 2,898 0.01 Reduce 7.65% <0.01 $161.49 $468,000 SEC
2015   Q3 3,138 0.01 Add 12.15% <0.01 $144.68 $454,000 SEC
2015   Q2 2,798 0.01 Add 5.94% <0.01 $135.10 $378,000 SEC
2015   Q1 2,641 0.01 $151.46 $400,000 SEC
2014   Q4 2,641 0.01 Add 20.54% <0.01 $141.61 $374,000 SEC
2014   Q3 2,191 <0.01 Reduce 3.31% <0.01 $125.51 $275,000 SEC
2014   Q2 2,266 <0.01 Reduce 9.86% <0.01 $115.18 $261,000 SEC
2014   Q1 2,514 <0.01 Add 27.68% <0.01 $111.77 $281,000 SEC
2013   Q4 1,969 <0.01 Reduce 9.22% <0.01 $118.84 $234,000 SEC
2013   Q3 2,169 <0.01 Add 10.33% <0.01 $115.26 $250,000 SEC
2013   Q2 1,966 <0.01 Buy <0.01 $110.38 $217,000 SEC
2007   Q4 0 0.00 Sell 100.00% <0.01 SEC
2007   Q3 4,400 <0.01 Buy <0.01 $61,365.45 $270,008,000 SEC
2006   Q3 0 0.00 Sell 100.00% 0.01 SEC
2006   Q2 3,756 0.01 Reduce 17.18% <0.01 $57,132.59 $214,590,000 SEC
2006   Q1 4,535 <0.01 $54,160.09 $245,616,000 SEC
2005   Q4 4,535 <0.01 Reduce 26.38% <0.01 $49,469.90 $224,346,000 SEC
2005   Q3 6,160 0.01 Reduce 5.38% <0.01 $43,089.94 $265,434,000 SEC
2005   Q2 6,510 <0.01 Reduce 4.41% <0.01 $44,729.95 $291,192,000 SEC
2005   Q1 6,810 0.01 Add 5.42% <0.01 $44,180.03 $300,866,000 SEC
2004   Q4 6,460 0.01 Buy 0.01 $48,410.06 $312,729,000 SEC
2004   Q3 0 0.00 Sell 100.00% 0.01 SEC
2004   Q2 6,000 0.01 $41,180.00 $247,080,000 SEC
2004   Q1 6,000 0.01 $37,610.00 $225,660,000 SEC
2003   Q4 6,000 0.01 Reduce 17.81% <0.01 $37,180.00 $223,080,000 SEC
2003   Q3 7,300 0.01 Buy 0.01 $31,150.00 $227,395,000 SEC