Merck & Co. Inc. Health Care | S&P 500 | 6MK | | 2019 - 1,018,800 2020 - 942,800 2021 - 925,700 -9% | 2019 - 5,187,444 2020 - 4,772,944 2021 - 4,784,611 Fluctuating | 2019 - 75,500 2020 - 77,578 2021 - 82,000 9% | 2019 - 20,400,000 2020 - 20,500,000 2021 - 19,400,000 Fluctuating | 2019 - 39 2020 - 47 2021 - 10 Fluctuating | 2019 - 0.11 2020 - 0.05 2021 - No data No data |