Merck & Co., Inc. (MRK)
NYSE: MRK · Real-Time Price · USD
145.60
+3.22 (2.26%)
At close: Oct 9, 2026, 4:00 PM EDT
146.25
+0.65 (0.45%)
After-hours: Oct 9, 2026, 7:57 PM EDT
Merck & Co. Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 9, 2026 | 141.37 | 146.68 | 141.36 | 145.60 | 145.60 | 2.26% | 9,288,038 |
| Oct 8, 2026 | 141.90 | 142.77 | 138.89 | 142.38 | 142.38 | -0.29% | 7,794,875 |
| Oct 7, 2026 | 142.03 | 144.15 | 141.49 | 142.79 | 142.79 | 0.60% | 6,347,632 |
| Oct 6, 2026 | 140.13 | 142.16 | 139.74 | 141.94 | 141.94 | 1.72% | 8,056,353 |
| Oct 5, 2026 | 143.67 | 144.06 | 138.80 | 139.54 | 139.54 | -3.30% | 9,473,247 |
| Oct 2, 2026 | 143.77 | 144.35 | 142.73 | 144.30 | 144.30 | 0.34% | 9,097,440 |
| Oct 1, 2026 | 144.71 | 145.39 | 143.26 | 143.81 | 143.81 | -1.03% | 7,852,149 |
| Sep 30, 2026 | 148.95 | 149.27 | 145.26 | 145.31 | 145.31 | -2.66% | 10,179,499 |
| Sep 29, 2026 | 148.17 | 150.36 | 146.09 | 149.28 | 149.28 | 0.40% | 7,261,630 |
| Sep 28, 2026 | 147.65 | 149.19 | 146.28 | 148.69 | 148.69 | -0.06% | 7,522,287 |
| Sep 25, 2026 | 148.06 | 149.98 | 147.48 | 148.78 | 148.78 | 0.54% | 7,770,529 |
| Sep 24, 2026 | 148.17 | 151.46 | 147.90 | 147.98 | 147.98 | -0.07% | 10,298,935 |
| Sep 23, 2026 | 151.32 | 152.01 | 146.89 | 148.08 | 148.08 | -1.88% | 9,468,088 |
| Sep 22, 2026 | 148.69 | 153.57 | 148.04 | 150.91 | 150.91 | 0.94% | 11,004,819 |
| Sep 21, 2026 | 146.79 | 150.49 | 145.60 | 149.50 | 149.50 | 1.79% | 7,438,085 |
| Sep 18, 2026 | 147.08 | 147.84 | 145.74 | 146.87 | 146.87 | -0.19% | 30,182,829 |
| Sep 17, 2026 | 145.74 | 147.65 | 145.32 | 147.15 | 147.15 | 1.55% | 9,542,015 |
| Sep 16, 2026 | 143.96 | 144.97 | 143.50 | 144.91 | 144.91 | 0.78% | 7,157,106 |
| Sep 15, 2026 | 143.85 | 144.15 | 142.32 | 143.79 | 143.79 | -0.15% | 7,780,306 |
| Sep 14, 2026 | 146.42 | 147.09 | 144.10 | 144.85 | 144.00 | 0.64% | 7,377,522 |
| Sep 11, 2026 | 145.52 | 145.90 | 143.68 | 143.93 | 143.09 | -0.54% | 8,679,443 |
| Sep 10, 2026 | 147.94 | 148.00 | 144.10 | 144.71 | 143.86 | -1.91% | 7,544,530 |
| Sep 9, 2026 | 148.96 | 149.41 | 147.18 | 147.53 | 146.66 | -0.63% | 8,546,447 |
| Sep 8, 2026 | 148.41 | 149.60 | 146.28 | 148.46 | 147.59 | -1.24% | 11,187,297 |
| Sep 4, 2026 | 150.83 | 152.22 | 150.09 | 150.33 | 149.45 | -1.32% | 4,397,467 |
| Sep 3, 2026 | 152.80 | 152.80 | 148.90 | 152.34 | 151.45 | 0.46% | 6,498,969 |
| Sep 2, 2026 | 151.50 | 152.69 | 149.97 | 151.64 | 150.75 | 1.19% | 8,970,603 |
| Sep 1, 2026 | 150.23 | 151.68 | 148.55 | 149.86 | 148.98 | 1.42% | 9,866,566 |
| Aug 31, 2026 | 147.00 | 148.69 | 145.95 | 147.76 | 146.89 | -0.40% | 11,126,604 |
| Aug 28, 2026 | 146.72 | 149.01 | 145.75 | 148.35 | 147.48 | -0.80% | 8,067,848 |
| Aug 27, 2026 | 149.53 | 152.08 | 149.02 | 149.54 | 148.66 | -2.33% | 8,530,989 |
| Aug 26, 2026 | 154.35 | 155.19 | 152.61 | 153.10 | 152.20 | -2.14% | 8,634,975 |
| Aug 25, 2026 | 151.00 | 156.92 | 150.66 | 156.45 | 155.53 | 3.84% | 14,005,080 |
| Aug 24, 2026 | 150.72 | 151.52 | 149.14 | 150.66 | 149.78 | -1.24% | 15,032,010 |
| Aug 21, 2026 | 149.12 | 154.49 | 148.59 | 152.55 | 151.65 | 2.39% | 15,976,212 |
| Aug 20, 2026 | 150.78 | 152.52 | 148.52 | 148.99 | 148.12 | -2.11% | 16,204,664 |
| Aug 19, 2026 | 146.94 | 153.50 | 144.90 | 152.20 | 151.31 | 12.60% | 32,776,268 |
| Aug 18, 2026 | 137.24 | 137.98 | 134.88 | 135.17 | 134.38 | -0.59% | 10,284,238 |
| Aug 17, 2026 | 134.95 | 137.17 | 134.55 | 135.97 | 135.17 | 0.10% | 8,477,590 |
| Aug 14, 2026 | 134.43 | 135.97 | 133.40 | 135.84 | 135.04 | 0.21% | 6,869,004 |
| Aug 13, 2026 | 133.86 | 135.68 | 133.06 | 135.55 | 134.75 | 1.98% | 8,895,212 |
| Aug 12, 2026 | 130.25 | 134.06 | 128.91 | 132.92 | 132.14 | 1.92% | 10,447,088 |
| Aug 11, 2026 | 129.93 | 132.84 | 129.70 | 130.42 | 129.65 | -0.38% | 6,342,169 |
| Aug 10, 2026 | 128.29 | 130.98 | 128.24 | 130.92 | 130.15 | 1.82% | 6,007,618 |
| Aug 7, 2026 | 127.84 | 128.75 | 126.68 | 128.58 | 127.83 | 0.16% | 7,347,555 |
| Aug 6, 2026 | 130.96 | 131.08 | 127.80 | 128.37 | 127.62 | 0.03% | 7,052,064 |
| Aug 5, 2026 | 129.41 | 131.09 | 127.56 | 128.33 | 127.58 | 0.26% | 10,501,869 |
| Aug 4, 2026 | 128.46 | 129.99 | 126.22 | 128.00 | 127.25 | 0.18% | 11,816,856 |
| Aug 3, 2026 | 129.87 | 131.47 | 126.72 | 127.77 | 127.02 | -1.87% | 11,153,829 |
| Jul 31, 2026 | 128.92 | 131.04 | 128.14 | 130.20 | 129.44 | 0.32% | 7,738,762 |