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GENERAL AMERICAN INVESTORS CO INC
> MRK
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Merck & Co., Inc. | MRK | 179,326 | 0 | 20,692,427,000 | 796,207,000 | $115,390.00 |
| 12/31/2022 | Merck & Co., Inc. | MRK | 179,326 | -60,865 | 19,896,220,000 | 19,875,535,000 | $110,950.00 |
| 09/30/2022 | Merck & Co., Inc. | MRK | 240,191 | 0 | 20,685,000 | -1,213,000 | $86.12 |
| 06/30/2022 | Merck & Co., Inc. | MRK | 240,191 | 0 | 21,898,000 | 2,190,000 | $91.17 |
| 03/31/2022 | Merck & Co., Inc. | MRK | 240,191 | 0 | 19,708,000 | 1,300,000 | $82.05 |
| 12/31/2021 | Merck & Co., Inc. | MRK | 240,191 | -15,000 | 18,408,000 | -759,000 | $76.64 |
| 09/30/2021 | Merck & Co., Inc. | MRK | 255,191 | 10,000 | 19,167,000 | 98,000 | $75.11 |
| 06/30/2021 | Merck & Co., Inc. | MRK | 245,191 | 0 | 19,069,000 | 167,000 | $77.77 |
| 03/31/2021 | Merck & Co., Inc. | MRK | 245,191 | 0 | 18,902,000 | -1,155,000 | $77.09 |
| 12/31/2020 | Merck & Co., Inc. | MRK | 245,191 | 0 | 20,057,000 | -282,000 | $81.80 |
| 09/30/2020 | Merck & Co., Inc. | MRK | 245,191 | 45,000 | 20,339,000 | 4,858,000 | $82.95 |
| 06/30/2020 | Merck & Co., Inc. | MRK | 200,191 | 15,000 | 15,481,000 | 1,232,000 | $77.33 |
| 03/31/2020 | Merck & Co., Inc. | MRK | 185,191 | 0 | 14,249,000 | -2,594,000 | $76.94 |
| 12/31/2019 | Merck & Co., Inc. | MRK | 185,191 | 0 | 16,843,000 | 1,254,000 | $90.95 |
| 09/30/2019 | Merck & Co., Inc. | MRK | 185,191 | 0 | 15,589,000 | 61,000 | $84.18 |
| 06/30/2019 | Merck & Co., Inc. | MRK | 185,191 | 0 | 15,528,000 | 126,000 | $83.85 |
| 03/31/2019 | Merck & Co., Inc. | MRK | 185,191 | -15,000 | 15,402,000 | 105,000 | $83.17 |
| 12/31/2018 | Merck & Co., Inc. | MRK | 200,191 | 0 | 15,297,000 | 1,095,000 | $76.41 |
| 09/30/2018 | Merck & Co., Inc. | MRK | 200,191 | 0 | 14,202,000 | 2,050,000 | $70.94 |
| 06/30/2018 | Merck & Co., Inc. | MRK | 200,191 | 0 | 12,152,000 | 1,248,000 | $60.70 |
| 03/31/2018 | Merck & Co., Inc. | MRK | 200,191 | 0 | 10,904,000 | -361,000 | $54.47 |
| 12/31/2017 | Merck & Co., Inc. | MRK | 200,191 | 0 | 11,265,000 | -1,553,000 | $56.27 |
| 09/30/2017 | Merck & Co., Inc. | MRK | 200,191 | -30,000 | 12,818,000 | -1,935,000 | $64.03 |
| 06/30/2017 | Merck & Co., Inc. | MRK | 230,191 | -35,000 | 14,753,000 | -2,097,000 | $64.09 |
| 03/31/2017 | Merck & Co., Inc. | MRK | 265,191 | 265,191 | 16,850,000 | 16,850,000 | $63.54 |
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