MRK Monthly Statistics
MRK monthly stock returns with historical performance by month, return charts, and downloadable statistics.
Merck & Co., Inc. (MRK) company overview
Merck makes pharmaceutical products to treat several conditions in a number of therapeutic areas, including cardiometabolic disease, cancer, and infections. In cancer, the firm's immuno-oncology platform, led by Keytruda, is a major contributor to overall sales. The company also has a substantial vaccine business aimed at preventing pediatric diseases, as well as Gardasil for human papillomavirus. Additionally, Merck sells animal health-related drugs. From a geographical perspective, 53% of the company's 2025 sales were generated from US human health (pharmaceuticals and vaccines).
| Period | Return % |
|---|---|
| 2000-01 | 16.26 |
| 2000-02 | -21.7 |
| 2000-03 | 0.92 |
| 2000-04 | 11.88 |
| 2000-05 | 7.37 |
| 2000-06 | 2.68 |
| 2000-07 | -6.5 |
| 2000-08 | -2.46 |
| 2000-09 | 6.51 |
| 2000-10 | 20.82 |
| 2000-11 | 3.05 |
| 2000-12 | 1.02 |
| 2001-01 | -12.22 |
| 2001-02 | -2.41 |
| 2001-03 | -5.37 |
| 2001-04 | 0.1 |
| 2001-05 | -3.92 |
| 2001-06 | -12.45 |
| 2001-07 | 6.38 |
| 2001-08 | -4.24 |
| 2001-09 | 2.3 |
| 2001-10 | -4.19 |
| 2001-11 | 6.18 |
| 2001-12 | -13.21 |
| 2002-01 | 0.64 |
| 2002-02 | 3.63 |
| 2002-03 | -6.12 |
| 2002-04 | -5.62 |
| 2002-05 | 5.07 |
| 2002-06 | -11.31 |
| 2002-07 | -2.05 |
| 2002-08 | 1.86 |
| 2002-09 | -9.52 |
| 2002-10 | 18.66 |
| 2002-11 | 9.52 |
| 2002-12 | -4.71 |
| 2003-01 | -2.17 |
| 2003-02 | -4.77 |
| 2003-03 | 3.85 |
| 2003-04 | 6.22 |
| 2003-05 | -4.48 |
| 2003-06 | 8.96 |
| 2003-07 | -8.71 |
| 2003-08 | -8.97 |
| 2003-09 | 0.58 |
| 2003-10 | -12.59 |
| 2003-11 | -8.24 |
| 2003-12 | 13.78 |
| 2004-01 | 3.04 |
| 2004-02 | 1.01 |
| 2004-03 | -8.09 |
| 2004-04 | 6.36 |
| 2004-05 | 0.62 |
| 2004-06 | 0.42 |
| 2004-07 | -4.52 |
| 2004-08 | -0.83 |
| 2004-09 | -26.61 |
| 2004-10 | -5.11 |
| 2004-11 | -10.51 |
| 2004-12 | 14.7 |
| 2005-01 | -12.72 |
| 2005-02 | 13 |
| 2005-03 | 2.12 |
| 2005-04 | 4.73 |
| 2005-05 | -4.33 |
| 2005-06 | -5.04 |
| 2005-07 | 0.85 |
| 2005-08 | -9.11 |
| 2005-09 | -3.64 |
| 2005-10 | 3.74 |
| 2005-11 | 4.16 |
| 2005-12 | 8.2 |
| 2006-01 | 8.47 |
| 2006-02 | 1.03 |
| 2006-03 | 1.08 |
| 2006-04 | -2.32 |
| 2006-05 | -3.26 |
| 2006-06 | 9.41 |
| 2006-07 | 10.56 |
| 2006-08 | 0.68 |
| 2006-09 | 3.33 |
| 2006-10 | 8.4 |
| 2006-11 | -2.01 |
| 2006-12 | -2.05 |
| 2007-01 | 2.64 |
| 2007-02 | -1.33 |
| 2007-03 | 0.05 |
| 2007-04 | 16.44 |
| 2007-05 | 1.98 |
| 2007-06 | -5.05 |
| 2007-07 | -0.29 |
| 2007-08 | 1.03 |
| 2007-09 | 3.03 |
| 2007-10 | 12.71 |
| 2007-11 | 1.89 |
| 2007-12 | -2.1 |
| 2008-01 | -20.67 |
| 2008-02 | -3.91 |
| 2008-03 | -14.34 |
| 2008-04 | 0.25 |
| 2008-05 | 2.42 |
| 2008-06 | -3.28 |
| 2008-07 | -12.71 |
| 2008-08 | 8.44 |
| 2008-09 | -11.55 |
| 2008-10 | -1.93 |
| 2008-11 | -13.65 |
| 2008-12 | 13.76 |
| 2009-01 | -6.1 |
| 2009-02 | -15.23 |
| 2009-03 | 10.52 |
| 2009-04 | -9.37 |
| 2009-05 | 13.79 |
| 2009-06 | 1.37 |
| 2009-07 | 7.35 |
| 2009-08 | 8.03 |
| 2009-09 | -2.46 |
| 2009-10 | -2.22 |
| 2009-11 | 17.08 |
| 2009-12 | 0.93 |
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| 2026-10-09 | 141.37 | 146.68 | 141.38 | 145.6 | — |
| 2026-10-08 | 141.9 | 142.77 | 138.9 | 142.38 | — |
| 2026-10-07 | 142.02 | 144.15 | 141.51 | 142.79 | — |
| 2026-10-06 | 140.13 | 142.15 | 139.75 | 141.94 | — |
| 2026-10-05 | 143.67 | 144.06 | 138.8 | 139.54 | — |
| 2026-10-02 | 143.77 | 144.35 | 142.73 | 144.3 | — |
| 2026-10-01 | 144.71 | 145.39 | 143.26 | 143.81 | — |
| 2026-09-30 | 148.95 | 149.27 | 145.26 | 145.31 | — |
| 2026-09-29 | 148.17 | 150.36 | 146.09 | 149.28 | — |
| 2026-09-28 | 147.65 | 149.17 | 146.28 | 148.69 | — |
| 2026-09-25 | 148.06 | 149.94 | 147.48 | 148.78 | — |
| 2026-09-24 | 148.16 | 151.46 | 147.9 | 147.98 | — |
| 2026-09-23 | 151.32 | 151.52 | 146.89 | 148.08 | — |
| 2026-09-21 | 146.79 | 150.49 | 145.6 | 149.5 | — |
| 2026-09-18 | 147.08 | 147.84 | 145.74 | 146.87 | — |
| 2026-09-17 | 145.74 | 147.65 | 145.32 | 147.15 | — |
| 2026-09-16 | 143.96 | 144.97 | 143.5 | 144.91 | — |
| 2026-09-15 | 143.85 | 144.15 | 142.32 | 143.79 | — |
| 2026-09-14 | 146.42 | 147.09 | 144.1 | 144.85 | — |
| 2026-09-11 | 145.52 | 145.89 | 143.69 | 143.93 | — |
| 2026-09-10 | 147.94 | 147.96 | 144.1 | 144.71 | — |
| 2026-09-09 | 148.96 | 149.41 | 147.19 | 147.53 | — |
| 2026-09-08 | 148.41 | 149.59 | 146.28 | 148.46 | — |
| 2026-09-04 | 150.83 | 152.21 | 150.09 | 150.33 | — |
| 2026-09-02 | 151.5 | 152.69 | 149.97 | 151.64 | — |
| 2026-09-01 | 150.23 | 151.68 | 148.55 | 149.86 | — |
| 2026-08-27 | 149.53 | 152.08 | 149.02 | 149.54 | — |
| 2026-08-26 | 154.35 | 155.19 | 152.61 | 153.1 | — |
| 2026-08-25 | 151 | 156.92 | 150.66 | 156.45 | — |
| 2026-08-24 | 150.72 | 151.52 | 149.14 | 150.66 | — |
| 2026-08-21 | 149.12 | 154.49 | 148.59 | 152.55 | — |
| 2026-08-20 | 150.78 | 152.51 | 148.52 | 148.99 | — |
| 2026-08-19 | 146.94 | 153.47 | 144.9 | 152.2 | — |
| 2026-08-18 | 137.24 | 137.98 | 134.88 | 135.17 | — |
| 2026-08-17 | 134.95 | 137.15 | 134.55 | 135.97 | — |
| 2026-08-14 | 134.43 | 135.97 | 133.4 | 135.84 | — |
| 2026-08-13 | 133.86 | 135.68 | 133.05 | 135.55 | — |
| 2026-08-12 | 130.25 | 134.06 | 128.91 | 132.92 | — |
| 2026-08-11 | 129.93 | 132.84 | 129.7 | 130.42 | — |
| 2026-08-10 | 128.29 | 130.98 | 128.24 | 130.92 | — |
| 2026-08-07 | 127.84 | 128.75 | 126.68 | 128.58 | — |
| 2026-08-06 | 130.96 | 131.08 | 127.8 | 128.37 | — |
| 2026-08-05 | 129.41 | 131.07 | 127.56 | 128.33 | — |
| 2026-08-04 | 128.46 | 129.99 | 126.22 | 128 | — |
| 2026-08-03 | 129.87 | 131.47 | 126.72 | 127.77 | — |
| 2026-07-31 | 128.92 | 131.04 | 128.14 | 130.2 | — |
| 2026-07-30 | 128.2 | 130.21 | 127.25 | 129.79 | — |
| 2026-07-29 | 132.37 | 132.69 | 129.65 | 130.36 | — |
| 2026-07-28 | 132.88 | 135.05 | 131.14 | 131.82 | — |
| 2026-07-27 | 131.01 | 132.53 | 130.53 | 130.76 | — |
| 2026-07-24 | 131.44 | 131.71 | 130.24 | 131.07 | — |
| 2026-07-23 | 127.82 | 131.04 | 127.88 | 130.48 | — |
| 2026-07-22 | 127.32 | 128.82 | 126.62 | 127.47 | — |
| 2026-07-21 | 124.8 | 126.77 | 124.1 | 126.26 | — |
| 2026-07-20 | 127.29 | 127.89 | 124.22 | 124.4 | — |
| 2026-07-17 | 128.45 | 131.74 | 127.03 | 127.5 | — |
| 2026-07-16 | 124.33 | 128.93 | 124 | 127.63 | — |
| 2026-07-15 | 124.25 | 124.9 | 122.75 | 123.61 | — |
| 2026-07-14 | 123.3 | 123.65 | 120.16 | 120.78 | — |
| 2026-07-13 | 123.58 | 124.74 | 122.44 | 124.03 | — |
| 2026-07-10 | 125.12 | 125.5 | 122.9 | 123.54 | — |
| 2026-07-09 | 125.48 | 126.37 | 124.44 | 125.07 | — |
| 2026-07-08 | 128.34 | 128.99 | 125.14 | 125.99 | — |
| 2026-07-07 | 128.77 | 129.69 | 127.89 | 128.86 | — |
| 2026-07-06 | 129.31 | 130 | 125.62 | 126.78 | — |
| 2026-07-02 | 126.18 | 129.61 | 125.99 | 129.56 | — |
| 2026-07-01 | 128.01 | 128.42 | 124.71 | 125.37 | — |
| 2026-06-30 | 129.21 | 130.29 | 126.69 | 128.5 | — |
| 2026-06-29 | 127.64 | 129.96 | 126.75 | 129.38 | — |
| 2026-06-26 | 125.83 | 128.78 | 125.83 | 128.66 | — |
| 2026-06-25 | 121.63 | 125.96 | 121 | 125.45 | — |
| 2026-06-24 | 120.9 | 121.81 | 119.51 | 120.6 | — |
| 2026-06-23 | 116.53 | 119.8 | 117 | 119.6 | — |
| 2026-06-22 | 113.97 | 115.63 | 113 | 115.48 | — |
| 2026-06-18 | 114.64 | 114.94 | 111.57 | 113.87 | — |
| 2026-06-17 | 114.86 | 115.99 | 114.02 | 115.44 | — |
| 2026-06-16 | 115.88 | 115.89 | 113.57 | 115.17 | — |
| 2026-06-15 | 118.71 | 118.95 | 114.86 | 114.9 | — |
| 2026-06-12 | 121.5 | 121.9 | 118.84 | 119.05 | — |
| 2026-06-11 | 120.04 | 122.71 | 119.95 | 120.76 | — |
| 2026-06-10 | 119.78 | 120.04 | 117.26 | 119.09 | — |
| 2026-06-09 | 120.03 | 120.5 | 118 | 119.6 | — |
| 2026-06-05 | 120.93 | 123.45 | 120.36 | 120.79 | — |
| 2026-06-04 | 117.16 | 120.55 | 117.09 | 120.26 | — |
| 2026-06-03 | 115.44 | 117.33 | 114.7 | 114.7 | — |
| 2026-06-02 | 114.5 | 116.78 | 114.56 | 115.65 | — |
| 2026-06-01 | 117.54 | 117.86 | 114.36 | 115.17 | — |
| 2026-05-29 | 119.65 | 120.67 | 118.19 | 118.72 | — |
| 2026-05-28 | 120.26 | 121.48 | 119.36 | 119.89 | — |
| 2026-05-27 | 119.82 | 122.37 | 119.78 | 120.24 | — |
| 2026-05-22 | 120.55 | 122.66 | 120.08 | 122.41 | — |
| 2026-05-21 | 112.79 | 115.98 | 112.09 | 115.88 | — |
| 2026-05-20 | 114.63 | 114.95 | 112.9 | 113 | — |
| 2026-05-19 | 112.56 | 115.1 | 112.13 | 114.24 | — |
| 2026-05-18 | 111.43 | 112.89 | 110.97 | 112.56 | — |
| 2026-05-15 | 113.9 | 113.93 | 110.95 | 111.38 | — |
| 2026-05-14 | 113.63 | 113.9 | 112.57 | 113.41 | — |
| 2026-05-13 | 112.25 | 114.07 | 112.05 | 113.45 | — |
| 2026-05-12 | 111.5 | 113.68 | 111.39 | 112.37 | — |
| 2026-05-11 | 112.15 | 113.68 | 111.01 | 111.28 | — |
| 2026-05-08 | 112.38 | 113.01 | 111.18 | 111.38 | — |
| 2026-05-07 | 113.51 | 113.75 | 111.1 | 112.3 | — |
| 2026-05-06 | 113.15 | 114.49 | 112.74 | 113.56 | — |
| 2026-05-05 | 113.67 | 114.07 | 112.84 | 113.15 | — |
| 2026-05-04 | 111.41 | 114.62 | 110.75 | 113.11 | — |
| 2026-05-01 | 112.33 | 114.54 | 111.88 | 112.16 | — |
| 2026-04-30 | 109.34 | 112.24 | 108.63 | 109.18 | — |
| 2026-04-29 | 108.55 | 111.22 | 107.9 | 110.95 | — |
| 2026-04-28 | 111.52 | 111.9 | 109.71 | 110.03 | — |
| 2026-04-27 | 111.22 | 112.75 | 110.14 | 110.23 | — |
| 2026-04-24 | 113.74 | 114.03 | 111.5 | 111.9 | — |
| 2026-04-23 | 113.36 | 115.02 | 113.1 | 114.62 | — |
| 2026-04-22 | 112.61 | 113.51 | 111.54 | 112.89 | — |
| 2026-04-21 | 116.49 | 116.53 | 111.91 | 112.56 | — |
| 2026-04-20 | 119.15 | 119.33 | 116.75 | 117.1 | — |
| 2026-04-17 | 115.56 | 119.17 | 115.57 | 119.07 | — |
| 2026-04-16 | 117.13 | 117.85 | 114.71 | 115.46 | — |
| 2026-04-15 | 119.79 | 120.25 | 116.65 | 117.9 | — |
| 2026-04-14 | 119.03 | 120.36 | 118.15 | 119.96 | — |
| 2026-04-13 | 121.03 | 121.29 | 119.06 | 120.15 | — |