Richard Pzena - Pzena Investment Management
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    158
Portfolio value:    $30,796,447,662
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 2,511 <0.01 Reduce 24.46% <0.01 $120.29 $302,048 SEC
2025   Q4 3,324 <0.01 $105.26 $349,884 SEC
2025   Q3 3,324 <0.01 $83.93 $278,983 SEC
2025   Q2 3,324 <0.01 Buy <0.01 $79.16 $263,128 SEC
2025   Q1 0 0.00 Sell 100.00% <0.01 SEC
2024   Q4 2,898 <0.01 Buy <0.01 $99.48 $288,293 SEC
2022   Q4 0 0.00 Sell 100.00% <0.01 SEC
2022   Q3 6,425 <0.01 Reduce 9.95% <0.01 $86.07 $553,000 SEC
2022   Q2 7,135 <0.01 Add 40.12% <0.01 $91.10 $650,000 SEC
2022   Q1 5,092 <0.01 Reduce 26.04% <0.01 $82.09 $418,000 SEC
2021   Q4 6,885 <0.01 Reduce 9.63% <0.01 $76.69 $528,000 SEC
2021   Q3 7,619 <0.01 $75.08 $572,000 SEC
2021   Q2 7,619 <0.01 Reduce 10.85% <0.01 $77.83 $593,000 SEC
2021   Q1 8,546 <0.01 Buy <0.01 $77.11 $659,000 SEC
2020   Q2 0 0.00 Sell 100.00% 0.01 SEC
2020   Q1 25,598 0.01 Reduce 56.47% 0.01 $76.96 $1,970,000 SEC
2019   Q4 58,811 0.02 Reduce 92.36% 0.32 $90.95 $5,349,000 SEC
2019   Q3 769,422 0.35 Reduce 39.09% 0.22 $84.18 $64,770,000 SEC
2019   Q2 1,263,234 0.56 Reduce 33.90% 0.29 $83.85 $105,922,000 SEC
2019   Q1 1,911,056 0.86 Reduce 48.08% 0.79 $83.17 $158,943,000 SEC
2018   Q4 3,680,967 1.64 Reduce 23.60% 0.39 $76.41 $281,263,000 SEC
2018   Q3 4,817,760 1.66 Reduce 1.77% 0.03 $70.94 $341,772,000 SEC
2018   Q2 4,904,336 1.50 Add 8.40% 0.12 $60.70 $297,693,000 SEC
2018   Q1 4,524,430 1.25 Add 175.79% 0.80 $54.47 $246,446,000 SEC
2017   Q4 1,640,524 0.45 Add 7.93% 0.03 $56.27 $92,312,000 SEC
2017   Q3 1,519,959 0.51 Add 84.25% 0.23 $64.03 $97,323,000 SEC
2017   Q2 824,940 0.29 Reduce 0.16% <0.01 $64.09 $52,870,000 SEC
2017   Q1 826,233 0.30 Reduce 34.47% 0.15 $63.54 $52,499,000 SEC
2016   Q4 1,260,853 0.43 Reduce 10.49% 0.06 $58.87 $74,226,000 SEC
2016   Q3 1,408,678 0.55 Reduce 0.47% <0.01 $62.41 $87,916,000 SEC
2016   Q2 1,415,390 0.51 Add 53.62% 0.18 $57.61 $81,541,000 SEC
2016   Q1 921,365 0.30 Buy 0.30 $52.91 $48,749,000 SEC