William Frels - Mairs & Power
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., Inc. (MRK)
← All MRK superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 50,348 0.06 Reduce 3.18% <0.01 $104.43–125.14 · VW $116.62i $6,056,361 SEC
2025   Q4 51,999 0.05 Reduce 0.36% <0.01 $82.01–107.59 · VW $98.29i $5,473,415 SEC
2025   Q3 52,187 0.04 Reduce 8.24% <0.01 $76.66–87.84 · VW $82.81i $4,380,055 SEC
2025   Q2 56,871 0.04 Add 6.98% <0.01 $73.31–89.75 · VW $80.74i $4,501,908 SEC
2025   Q1 53,159 0.05 Reduce 1.37% <0.01 $81.04–102.97 · VW $91.26i $4,771,552 SEC
2024   Q4 53,900 0.05 Add 0.96% <0.01 $94.48–114.79 · VW $102.92i $5,361,972 SEC
2024   Q3 53,387 0.06 Reduce 2.67% <0.01 $110.72–129.93 · VW $118.07i $6,062,628 SEC
2024   Q2 54,851 0.07 Reduce 3.80% <0.01 $120.87–134.63 · VW $126.43i $6,790,554 SEC
2024   Q1 57,017 0.07 Reduce 8.01% <0.01 $109.16–133.10 · VW $124.74i $7,523,393 SEC
2023   Q4 61,984 0.07 Add 4.45% <0.01 $99.14–109.24 · VW $105.80i $6,757,496 SEC
2023   Q3 59,345 0.07 Reduce 0.65% <0.01 $102.71–114.62 · VW $106.76i $6,109,568 SEC
2023   Q2 59,733 0.08 Reduce 11.16% <0.01 $105.57–119.65 · VW $113.54i $6,892,591 SEC
2023   Q1 67,237 0.08 Reduce 8.48% <0.01 $101.75–115.49 · VW $107.88i $7,153,344 SEC
2022   Q4 73,466 0.10 Reduce 2.22% <0.01 $86.02–112.89 · VW $103.29i $8,151,053 SEC
2022   Q3 75,132 0.08 Add 32.17% 0.02 $84.52–95.35 · VW $88.66i $6,470,000 SEC
2022   Q2 56,843 0.06 Reduce 5.49% <0.01 $81.64–95.72 · VW $89.51i $5,182,000 SEC
2022   Q1 60,145 0.05 Reduce 5.29% <0.01 $72.88–83.38 · VW $79.44i $4,935,000 SEC
2021   Q4 63,502 0.05 Reduce 0.82% <0.01 $71.50–91.40 · VW $79.85i $4,867,000 SEC
2021   Q3 64,028 0.05 Reduce 4.37% <0.01 $70.89–79.23 · VW $75.08i $4,809,000 SEC
2021   Q2 66,953 0.05 Reduce 15.80% <0.01 $69.51–78.09 · VW $75.12i $5,207,000 SEC
2021   Q1 79,515 0.06 Reduce 7.21% <0.01 $68.44–81.68 · VW $74.56i $5,849,000 SEC
2020   Q4 85,696 0.07 Add 3.36% <0.01 $70.55–81.27 · VW $76.63i $6,689,000 SEC
2020   Q3 82,913 0.08 Reduce 2.12% <0.01 $72.56–83.78 · VW $78.50i $6,563,000 SEC
2020   Q2 84,710 0.08 Reduce 1.01% <0.01 $69.65–80.79 · VW $74.74i $6,251,000 SEC
2020   Q1 85,573 0.09 Reduce 1.06% <0.01 $62.26–87.92 · VW $74.53i $6,282,000 SEC
2019   Q4 86,489 0.09 Add 2.56% <0.01 $76.57–88.40 · VW $83.92i $7,506,000 SEC
2019   Q3 84,327 0.08 Add 2.63% <0.01 $75.03–83.35 · VW $79.57i $6,774,000 SEC
2019   Q2 82,168 0.08 Reduce 5.47% <0.01 $68.92–82.54 · VW $77.16i $6,574,000 SEC
2019   Q1 86,924 0.08 Reduce 5.91% <0.01 $68.75–79.65 · VW $75.92i $6,898,000 SEC
2018   Q4 92,379 0.09 Reduce 1.22% <0.01 $63.07–76.52 · VW $70.83i $6,735,000 SEC
2018   Q3 93,516 0.07 Reduce 1.91% <0.01 $57.18–68.30 · VW $64.39i $6,330,000 SEC
2018   Q2 95,336 0.07 Reduce 2.52% <0.01 $50.41–60.08 · VW $56.14i $5,522,000 SEC
2018   Q1 97,800 0.06 Add 9.28% <0.01 $50.54–60.86 · VW $54.46i $5,083,000 SEC
2017   Q4 89,491 0.06 Reduce 3.19% <0.01 $51.17–61.93 · VW $55.60i $4,805,000 SEC
2017   Q3 92,437 0.07 Add 3.62% <0.01 $58.36–63.37 · VW $60.94i $5,648,000 SEC
2017   Q2 89,207 0.07 Reduce 5.57% <0.01 $59.04–63.36 · VW $61.18i $5,455,000 SEC
2017   Q1 94,471 0.07 Reduce 7.86% <0.01 $56.35–63.74 · VW $60.24i $5,728,000 SEC
2016   Q4 102,535 0.07 Add 0.93% <0.01 $55.62–62.46 · VW $58.09i $5,760,000 SEC
2016   Q3 101,586 0.08 Reduce 5.12% <0.01 $54.56–61.07 · VW $58.39i $6,050,000 SEC
2016   Q2 107,068 0.08 Add 0.31% <0.01 $50.04–55.22 · VW $53.41i $5,886,000 SEC
2016   Q1 106,739 0.08 Reduce 2.66% <0.01 $45.77–51.15 · VW $49.13i $5,389,000 SEC
2015   Q4 109,660 0.08 Add 0.49% <0.01 $46.14–53.22 · VW $49.92i $5,527,000 SEC
2015   Q3 109,122 0.08 Add 1.22% <0.01 $43.60–57.32 · VW $49.35i $5,143,000 SEC
2015   Q2 107,812 0.08 Reduce 2.17% <0.01 $53.65–58.87 · VW $55.61i $5,857,000 SEC
2015   Q1 110,206 0.08 Reduce 2.35% <0.01 $53.09–60.71 · VW $56.22i $6,044,000 SEC
2014   Q4 112,853 0.08 Add 0.89% <0.01 $50.09–59.35 · VW $54.54i $6,115,000 SEC
2014   Q3 111,858 0.09 Reduce 0.75% <0.01 $53.02–58.52 · VW $56.04i $6,327,000 SEC
2014   Q2 112,708 0.09 Reduce 5.84% <0.01 $51.91–57.10 · VW $54.74i $6,222,000 SEC
2014   Q1 119,694 0.10 Reduce 12.58% 0.01 $47.04–55.01 · VW $52.07i $6,484,000 SEC
2013   Q4 136,925 0.11 Add 15.21% 0.01 $42.58–48.11 · VW $46.15i $6,539,000 SEC
2013   Q3 118,847 0.10 Reduce 16.79% 0.02 $43.92–46.83 · VW $45.39i $5,399,000 SEC
2013   Q2 142,830 0.13 Add 0.37% <0.01 $41.77–47.86 · VW $44.65i $6,331,000 SEC
2013   Q1 142,306 0.06 Add 3.09% <0.01 $38.96–43.34 · VW $41.49i $6,002,000 SEC
2012   Q4 138,047 0.13 Add 0.34% <0.01 $38.19–45.80 · VW $41.02i $5,393,000 SEC
2012   Q3 137,586 0.15 Reduce 3.54% <0.01 $39.18–43.61 · VW $41.94i $5,920,000 SEC
2012   Q2 142,640 0.15 Add 0.39% <0.01 $35.32–39.84 · VW $38.33i $5,682,000 SEC
2012   Q1 142,090 0.13 Reduce 1.51% <0.01 $35.22–37.62 · VW $36.49i $5,206,000 SEC
2011   Q4 144,267 0.15 Add 1.60% <0.01 $29.14–36.16 · VW $33.76i $5,190,000 SEC
2011   Q3 141,994 0.14 Reduce 1.03% <0.01 $28.12–34.89 · VW $31.40i $4,431,000 SEC
2011   Q2 143,479 0.07 Reduce 0.21% <0.01 $31.49–35.93 · VW $33.70i $4,831,000 SEC
2011   Q1 143,786 0.12 Reduce 1.82% <0.01 $29.64–35.90 · VW $32.34i $4,529,000 SEC
2010   Q4 146,458 0.15 Add 4.02% <0.01 $32.39–35.95 · VW $34.24i $5,037,000 SEC
2010   Q3 140,797 0.08 Add 0.48% <0.01 $32.11–35.86 · VW $34.36i $4,945,362,000 SEC
2010   Q2 140,119 0.16 Add 1.36% <0.01 $29.29–36.23 · VW $32.96i $4,675,524,000 SEC
2010   Q1 138,240 0.07 Reduce 6.89% <0.01 $34.12–39.66 · VW $36.47i $4,926,764,000 SEC
2009   Q4 148,474 0.08 Buy 0.08 $28.90–36.66 · VW $33.48i $5,176,768,000 SEC
Price snapshot:
Current price$124.03
Avg. buy price$14,432.01
+/- since buy-99.14%
52-week low$74.18
52-week high$130.29