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., Inc. (MRK)
← All MRK superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 2,511 <0.01 Reduce 24.46% <0.01 $104.43–125.14 · VW $116.62i $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 $73.31–89.75 · VW $80.74i $263,128 SEC
2025   Q1 0 0.00 Sell 100.00% <0.01 $81.04–102.97 · VW $91.26i SEC
2024   Q4 2,898 <0.01 Buy <0.01 $94.48–114.79 · VW $102.92i $288,293 SEC
2022   Q4 0 0.00 Sell 100.00% <0.01 $86.02–112.89 · VW $103.29i SEC
2022   Q3 6,425 <0.01 Reduce 9.95% <0.01 $84.52–95.35 · VW $88.66i $553,000 SEC
2022   Q2 7,135 <0.01 Add 40.12% <0.01 $81.64–95.72 · VW $89.51i $650,000 SEC
2022   Q1 5,092 <0.01 Reduce 26.04% <0.01 $72.88–83.38 · VW $79.44i $418,000 SEC
2021   Q4 6,885 <0.01 Reduce 9.63% <0.01 $71.50–91.40 · VW $79.85i $528,000 SEC
2021   Q3 7,619 <0.01 $75.08 $572,000 SEC
2021   Q2 7,619 <0.01 Reduce 14.93% <0.01 $69.51–78.09 · VW $75.12i $593,000 SEC
2021   Q1 8,956 <0.01 Buy <0.01 $68.44–81.68 · VW $74.56i $659,000 SEC
2020   Q2 0 0.00 Sell 100.00% 0.01 $69.65–80.79 · VW $74.74i SEC
2020   Q1 26,827 0.01 Reduce 56.47% 0.01 $62.26–87.92 · VW $74.53i $1,970,000 SEC
2019   Q4 61,634 0.02 Reduce 92.36% 0.32 $76.57–88.40 · VW $83.92i $5,349,000 SEC
2019   Q3 806,354 0.35 Reduce 39.09% 0.22 $75.03–83.35 · VW $79.57i $64,770,000 SEC
2019   Q2 1,323,869 0.56 Reduce 33.90% 0.29 $68.92–82.54 · VW $77.16i $105,922,000 SEC
2019   Q1 2,002,787 0.86 Reduce 48.08% 0.79 $68.75–79.65 · VW $75.92i $158,943,000 SEC
2018   Q4 3,857,653 1.64 Reduce 23.60% 0.39 $63.07–76.52 · VW $70.83i $281,263,000 SEC
2018   Q3 5,049,012 1.66 Reduce 1.77% 0.03 $57.18–68.30 · VW $64.39i $341,772,000 SEC
2018   Q2 5,139,744 1.50 Add 8.40% 0.12 $50.41–60.08 · VW $56.14i $297,693,000 SEC
2018   Q1 4,741,603 1.25 Add 175.79% 0.80 $50.54–60.86 · VW $54.46i $246,446,000 SEC
2017   Q4 1,719,269 0.45 Add 7.93% 0.03 $51.17–61.93 · VW $55.60i $92,312,000 SEC
2017   Q3 1,592,917 0.51 Add 84.25% 0.23 $58.36–63.37 · VW $60.94i $97,323,000 SEC
2017   Q2 864,537 0.29 Reduce 0.16% <0.01 $59.04–63.36 · VW $61.18i $52,870,000 SEC
2017   Q1 865,892 0.30 Reduce 34.47% 0.15 $56.35–63.74 · VW $60.24i $52,499,000 SEC
2016   Q4 1,321,374 0.43 Reduce 10.49% 0.06 $55.62–62.46 · VW $58.09i $74,226,000 SEC
2016   Q3 1,476,295 0.55 Reduce 0.47% <0.01 $54.56–61.07 · VW $58.39i $87,916,000 SEC
2016   Q2 1,483,329 0.51 Add 53.62% 0.18 $50.04–55.22 · VW $53.41i $81,541,000 SEC
2016   Q1 965,591 0.30 Buy 0.30 $45.77–51.15 · VW $49.13i $48,749,000 SEC
Price snapshot:
Current price$124.03
Avg. buy price$79.16
+/- since buy56.68%
52-week low$74.18
52-week high$130.29