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  Amgen (AMGN)
Period Shares % of Portfolio Activity % Change to Portfolio Reported Price Value Filing
2025   Q1 0 0.00 Sell 100.00% <0.01 SEC
2024   Q4 803 <0.01 Buy <0.01 $260.64 $209,294 SEC
2023   Q4 0 0.00 Sell 100.00% 0.27 SEC
2023   Q3 235,266 0.27 Reduce 53.45% 0.26 $268.76 $63,230,090 SEC
2023   Q2 505,353 0.48 Reduce 2.30% 0.01 $222.02 $112,198,473 SEC
2023   Q1 517,248 0.54 Add 1.50% <0.01 $241.75 $125,044,704 SEC
2022   Q4 509,626 0.59 Add 2.02% 0.01 $262.64 $133,848,173 SEC
2022   Q3 499,532 0.56 Reduce 4.34% 0.02 $225.40 $112,595,000 SEC
2022   Q2 522,173 0.57 Reduce 1.89% <0.01 $243.30 $127,045,000 SEC
2022   Q1 532,210 0.49 Reduce 0.50% <0.01 $241.82 $128,699,000 SEC
2021   Q4 534,870 0.45 Add 0.30% <0.01 $224.97 $120,330,000 SEC
2021   Q3 533,272 0.45 Reduce 11.26% 0.06 $212.65 $113,400,000 SEC
2021   Q2 600,920 0.57 Add 10.24% 0.05 $243.75 $146,474,000 SEC
2021   Q1 545,096 0.55 Add 6.08% 0.03 $248.81 $135,625,000 SEC
2020   Q4 513,850 0.56 Add 2.39% 0.01 $229.92 $118,144,000 SEC
2020   Q3 501,877 0.80 Reduce 6.29% 0.05 $254.16 $127,557,000 SEC
2020   Q2 535,571 0.82 Reduce 51.33% 0.87 $235.86 $126,320,000 SEC
2020   Q1 1,100,337 1.69 Reduce 15.96% 0.23 $202.73 $223,071,000 SEC
2019   Q4 1,309,307 1.47 Add 8.27% 0.11 $241.07 $315,635,000 SEC
2019   Q3 1,209,274 1.27 Reduce 0.99% 0.01 $193.51 $234,007,000 SEC
2019   Q2 1,221,320 1.19 Add 28.56% 0.26 $184.28 $225,065,000 SEC
2019   Q1 950,019 0.98 Reduce 21.32% 0.29 $189.98 $180,485,000 SEC
2018   Q4 1,207,468 1.37 Reduce 23.17% 0.37 $194.67 $235,058,000 SEC
2018   Q3 1,571,550 1.58 Reduce 0.41% <0.01 $207.29 $325,767,000 SEC
2018   Q2 1,578,099 1.47 Add 17.65% 0.22 $184.59 $291,301,000 SEC
2018   Q1 1,341,311 1.16 Add 79,361.55% 1.16 $170.48 $228,667,000 SEC
2017   Q4 1,688 <0.01 Add 34.50% <0.01 $174.17 $294,000 SEC
2017   Q3 1,255 <0.01 Reduce 6.27% <0.01 $186.45 $234,000 SEC
2017   Q2 1,339 <0.01 Add 3.24% $172.52 $231,000 SEC
2017   Q1 1,297 <0.01 Reduce 5.47% <0.01 $164.23 $213,000 SEC
2016   Q4 1,372 <0.01 Add 14.72% <0.01 $146.50 $201,000 SEC
2016   Q3 1,196 <0.01 Buy <0.01 $167.22 $200,000 SEC
2009   Q1 0 0.00 Sell 100.00% 0.48 SEC
2008   Q4 680,823 0.48 Reduce 85.46% 1.88 $57.75 $39,318,000 SEC
2008   Q3 4,682,808 2.20 Reduce 62.38% 2.44 $59.27 $277,550,000 SEC
2008   Q2 12,446,709 3.91 Add 24.69% 0.77 $47.16 $586,987,000 SEC
2007   Q4 9,982,236 2.35 Reduce 4.30% 0.10 $46.44 $463,575,000 SEC
2007   Q3 10,430,833 2.42 Add 8.87% 0.20 $56.57 $590,072,000 SEC
2007   Q2 9,580,990 2.01 Reduce 8.21% 0.21 $55.29 $529,733,000 SEC
2007   Q1 10,438,004 2.58 Buy 2.58 $41.78 $436,100,000 SEC