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MARSHALL WACE, LLP
> MRK
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Merck & Co., Inc. | MRK | 176,087 | -857,719 | 20,318,679,000 | -94,382,096,000 | $115,390.00 |
| 12/31/2022 | Merck & Co., Inc. | MRK | 1,033,806 | 372,519 | 114,700,775,000 | 114,643,824,000 | $110,950.00 |
| 09/30/2022 | Merck & Co., Inc. | MRK | 661,287 | -5,140,458 | 56,951,000 | -471,993,000 | $86.12 |
| 06/30/2022 | Merck & Co., Inc. | MRK | 5,801,745 | -983,823 | 528,944,000 | -27,811,000 | $91.17 |
| 03/31/2022 | Merck & Co., Inc. | MRK | 6,785,568 | 6,746,481 | 556,755,000 | 553,759,000 | $82.05 |
| 12/31/2021 | Merck & Co., Inc. | MRK | 39,087 | 36,573 | 2,996,000 | 2,807,000 | $76.65 |
| 09/30/2021 | Merck & Co., Inc. | MRK | 2,514 | 2,514 | 189,000 | 189,000 | $75.18 |
| 03/31/2021 | Merck & Co., Inc. | MRK | 0 | -54,136 | 0 | -4,428,000 | |
| 12/31/2020 | Merck & Co., Inc. | MRK | 54,136 | -206,854 | 4,428,000 | -17,222,000 | $81.79 |
| 09/30/2020 | Merck & Co., Inc. | MRK | 260,990 | 97,378 | 21,650,000 | 8,997,000 | $82.95 |
| 06/30/2020 | Merck & Co., Inc. | MRK | 163,612 | -158,205 | 12,653,000 | -12,107,000 | $77.34 |
| 03/31/2020 | Merck & Co., Inc. | MRK | 321,817 | -32,736 | 24,760,000 | -7,486,000 | $76.94 |
| 12/31/2019 | Merck & Co., Inc. | MRK | 354,553 | 147,992 | 32,246,000 | 14,857,000 | $90.95 |
| 09/30/2019 | Merck & Co., Inc. | MRK | 206,561 | -257,708 | 17,389,000 | -21,539,000 | $84.18 |
| 06/30/2019 | Merck & Co., Inc. | MRK | 464,269 | 244,145 | 38,928,000 | 20,620,000 | $83.85 |
| 03/31/2019 | Merck & Co., Inc. | MRK | 220,124 | 86,159 | 18,308,000 | 8,071,000 | $83.17 |
| 12/31/2018 | Merck & Co., Inc. | MRK | 133,965 | 70,868 | 10,237,000 | 5,761,000 | $76.42 |
| 09/30/2018 | Merck & Co., Inc. | MRK | 63,097 | 29,699 | 4,476,000 | 2,449,000 | $70.94 |
| 06/30/2018 | Merck & Co., Inc. | MRK | 33,398 | 33,398 | 2,027,000 | 2,027,000 | $60.69 |
| 09/30/2017 | Merck & Co., Inc. | MRK | 0 | -22,083 | 0 | -1,413,000 | |
| 06/30/2017 | Merck & Co., Inc. | MRK | 22,083 | 22,083 | 1,413,000 | 1,413,000 | $63.99 |
| 03/31/2017 | Merck & Co., Inc. | MRK | 0 | -480,610 | 0 | -28,294,000 | |
| 12/31/2016 | Merck & Co., Inc. | MRK | 480,610 | -763,858 | 28,294,000 | -49,373,000 | $58.87 |
| 09/30/2016 | Merck & Co., Inc. | MRK | 1,244,468 | 1,179,053 | 77,667,000 | 73,899,000 | $62.41 |
| 06/30/2016 | Merck & Co., Inc. | MRK | 65,415 | -145,488 | 3,768,000 | -7,391,000 | $57.60 |
| 03/31/2016 | Merck & Co., Inc. | MRK | 210,903 | 210,903 | 11,159,000 | 11,159,000 | $52.91 |
| 12/31/2015 | Merck & Co., Inc. | MRK | 444,880 | 425,949 | 23,499,000 | 22,564,000 | $52.82 |
| 09/30/2015 | Merck & Co., Inc. | MRK | 18,931 | 18,931 | 935,000 | 935,000 | $49.39 |
| 06/30/2015 | Merck & Co., Inc. | MRK | 662,385 | 662,385 | 37,710,000 | 37,710,000 | $56.93 |
| 03/31/2015 | Merck & Co., Inc. | MRK | 135,184 | 135,184 | 7,770,000 | 7,770,000 | $57.48 |
| 12/31/2014 | Merck & Co., Inc. | MRK | 306,004 | 306,004 | 17,378,000 | 17,378,000 | $56.79 |
| 09/30/2014 | Merck & Co., Inc. | MRK | 456,886 | 456,886 | 27,084,000 | 27,084,000 | $59.28 |
| 06/30/2014 | Merck & Co., Inc. | MRK | 30,139 | 30,139 | 1,744,000 | 1,744,000 | $57.87 |
| 06/30/2011 | Merck & Co., Inc. | MRK | 0 | -702 | 0 | -23,000 | |
| 03/31/2011 | Merck & Co., Inc. | MRK | 702 | 0 | 23,000 | -2,000 | $32.76 |
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