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  Merck & Co. (MRK)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2026   Q1 50,348 0.06 Reduce 3.18% <0.01 $120.29 $6,056,361 SEC
2025   Q4 51,999 0.05 Reduce 0.36% <0.01 $105.26 $5,473,415 SEC
2025   Q3 52,187 0.04 Reduce 8.24% <0.01 $83.93 $4,380,055 SEC
2025   Q2 56,871 0.04 Add 6.98% <0.01 $79.16 $4,501,908 SEC
2025   Q1 53,159 0.05 Reduce 1.37% <0.01 $89.76 $4,771,552 SEC
2024   Q4 53,900 0.05 Add 0.96% <0.01 $99.48 $5,361,972 SEC
2024   Q3 53,387 0.06 Reduce 2.67% <0.01 $113.56 $6,062,628 SEC
2024   Q2 54,851 0.07 Reduce 3.80% <0.01 $123.80 $6,790,554 SEC
2024   Q1 57,017 0.07 Reduce 8.01% <0.01 $131.95 $7,523,393 SEC
2023   Q4 61,984 0.07 Add 4.45% <0.01 $109.02 $6,757,496 SEC
2023   Q3 59,345 0.07 Reduce 0.65% <0.01 $102.95 $6,109,568 SEC
2023   Q2 59,733 0.07 Reduce 11.16% <0.01 $115.39 $6,892,591 SEC
2023   Q1 67,237 0.08 Reduce 8.48% <0.01 $106.39 $7,153,344 SEC
2022   Q4 73,466 0.10 Reduce 2.22% <0.01 $110.95 $8,151,053 SEC
2022   Q3 75,132 0.08 Add 32.17% 0.02 $86.12 $6,470,000 SEC
2022   Q2 56,843 0.06 Reduce 5.49% <0.01 $91.16 $5,182,000 SEC
2022   Q1 60,145 0.05 Reduce 5.29% <0.01 $82.05 $4,935,000 SEC
2021   Q4 63,502 0.05 Reduce 0.82% <0.01 $76.64 $4,867,000 SEC
2021   Q3 64,028 0.05 Reduce 4.37% <0.01 $75.11 $4,809,000 SEC
2021   Q2 66,953 0.05 Reduce 11.76% <0.01 $77.77 $5,207,000 SEC
2021   Q1 75,873 0.06 Reduce 7.21% <0.01 $77.09 $5,849,000 SEC
2020   Q4 81,771 0.07 Add 3.36% <0.01 $81.80 $6,689,000 SEC
2020   Q3 79,115 0.08 Reduce 2.12% <0.01 $82.96 $6,563,000 SEC
2020   Q2 80,830 0.08 Reduce 1.01% <0.01 $77.34 $6,251,000 SEC
2020   Q1 81,654 0.09 Reduce 1.06% <0.01 $76.93 $6,282,000 SEC
2019   Q4 82,528 0.09 Add 2.56% <0.01 $90.95 $7,506,000 SEC
2019   Q3 80,465 0.08 Add 2.63% <0.01 $84.19 $6,774,000 SEC
2019   Q2 78,405 0.08 Reduce 5.47% <0.01 $83.85 $6,574,000 SEC
2019   Q1 82,943 0.08 Reduce 5.90% <0.01 $83.17 $6,898,000 SEC
2018   Q4 88,148 0.09 Reduce 1.22% <0.01 $76.41 $6,735,000 SEC
2018   Q3 89,233 0.07 Reduce 1.91% <0.01 $70.94 $6,330,000 SEC
2018   Q2 90,969 0.07 Reduce 2.52% <0.01 $60.70 $5,522,000 SEC
2018   Q1 93,321 0.06 Add 9.29% <0.01 $54.47 $5,083,000 SEC
2017   Q4 85,392 0.06 Reduce 3.19% <0.01 $56.27 $4,805,000 SEC
2017   Q3 88,203 0.07 Add 3.62% <0.01 $64.03 $5,648,000 SEC
2017   Q2 85,121 0.07 Reduce 5.57% <0.01 $64.09 $5,455,000 SEC
2017   Q1 90,144 0.07 Reduce 7.86% <0.01 $63.54 $5,728,000 SEC
2016   Q4 97,839 0.07 Add 0.93% <0.01 $58.87 $5,760,000 SEC
2016   Q3 96,933 0.08 Reduce 5.12% <0.01 $62.41 $6,050,000 SEC
2016   Q2 102,164 0.08 Add 0.31% <0.01 $57.61 $5,886,000 SEC
2016   Q1 101,850 0.08 Reduce 2.66% <0.01 $52.91 $5,389,000 SEC
2015   Q4 104,637 0.08 Add 0.49% <0.01 $52.82 $5,527,000 SEC
2015   Q3 104,124 0.08 Add 1.22% <0.01 $49.39 $5,143,000 SEC
2015   Q2 102,874 0.08 Reduce 2.17% <0.01 $56.93 $5,857,000 SEC
2015   Q1 105,158 0.08 Reduce 2.35% <0.01 $57.48 $6,044,000 SEC
2014   Q4 107,684 0.08 Add 0.89% <0.01 $56.79 $6,115,000 SEC
2014   Q3 106,735 0.09 Reduce 0.75% <0.01 $59.28 $6,327,000 SEC
2014   Q2 107,546 0.09 Reduce 5.84% <0.01 $57.85 $6,222,000 SEC
2014   Q1 114,212 0.10 Reduce 12.58% 0.01 $56.77 $6,484,000 SEC
2013   Q4 130,654 0.11 Add 15.21% 0.01 $50.05 $6,539,000 SEC
2013   Q3 113,404 0.10 Reduce 16.79% 0.02 $47.61 $5,399,000 SEC
2013   Q2 136,288 0.13 Add 0.37% <0.01 $46.45 $6,331,000 SEC
2013   Q1 135,788 0.06 Add 3.09% <0.01 $44.20 $6,002,000 SEC
2012   Q4 131,724 0.13 Add 0.34% <0.01 $40.94 $5,393,000 SEC
2012   Q3 131,284 0.15 Reduce 3.54% <0.01 $45.09 $5,920,000 SEC
2012   Q2 136,107 0.15 Add 0.39% <0.01 $41.75 $5,682,000 SEC
2012   Q1 135,582 0.13 Reduce 1.51% <0.01 $38.40 $5,206,000 SEC
2011   Q4 137,659 0.15 Add 1.60% <0.01 $37.70 $5,190,000 SEC
2011   Q3 135,490 0.14 Buy 0.14 $32.70 $4,431,000 SEC
2011   Q2 0 0.00 Sell 100.00% 0.12 SEC
2011   Q1 137,200 0.12 Reduce 1.82% <0.01 $33.01 $4,529,000 SEC
2010   Q4 139,750 0.15 Add 4.02% <0.01 $36.04 $5,037,000 SEC
2010   Q3 134,348 0.08 Add 1.85% <0.01 $36,810.09 $4,945,362,000 SEC
2010   Q1 131,908 0.07 Reduce 6.89% <0.01 $37,350.00 $4,926,764,000 SEC
2009   Q4 141,674 0.08 Buy 0.08 $36,540.00 $5,176,768,000 SEC