Merck & Co. Inc. (MRK)
NYSE: MRK
· Real-Time Price · USD
78.54
0.95 (1.22%)
At close: Sep 26, 2025, 3:59 PM
78.70
0.20%
After-hours: Sep 26, 2025, 07:56 PM EDT
MRK Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 26, 2025 | 78.76 | 78.96 | 77.69 | 78.56 | 78.56 | 1.24% | 12,191,484 |
| Sep 25, 2025 | 79.78 | 79.88 | 77.58 | 77.60 | 77.60 | -2.60% | 14,923,800 |
| Sep 24, 2025 | 79.90 | 80.11 | 79.33 | 79.67 | 79.67 | -0.36% | 11,804,200 |
| Sep 23, 2025 | 80.09 | 81.11 | 79.67 | 79.96 | 79.96 | -0.55% | 13,145,300 |
| Sep 22, 2025 | 81.76 | 81.94 | 80.26 | 80.40 | 80.40 | -1.36% | 11,986,448 |
| Sep 19, 2025 | 81.81 | 82.40 | 81.00 | 81.51 | 81.51 | -0.02% | 25,627,814 |
| Sep 18, 2025 | 81.22 | 81.69 | 80.82 | 81.53 | 81.53 | 0.48% | 10,458,900 |
| Sep 17, 2025 | 80.98 | 82.25 | 80.80 | 81.14 | 81.14 | 0.06% | 12,642,100 |
| Sep 16, 2025 | 81.01 | 81.48 | 80.54 | 81.09 | 81.09 | 0.09% | 10,065,901 |
| Sep 15, 2025 | 82.11 | 82.75 | 80.92 | 81.02 | 81.02 | -2.16% | 10,229,800 |
| Sep 12, 2025 | 84.62 | 85.18 | 82.80 | 82.81 | 82.00 | -2.75% | 9,939,500 |
| Sep 11, 2025 | 84.34 | 85.55 | 84.00 | 85.15 | 84.32 | 1.33% | 9,667,200 |
| Sep 10, 2025 | 84.27 | 84.57 | 83.54 | 84.03 | 83.21 | -0.69% | 13,073,300 |
| Sep 9, 2025 | 84.18 | 84.80 | 84.13 | 84.61 | 83.78 | 0.62% | 9,767,500 |
| Sep 8, 2025 | 84.16 | 84.32 | 82.82 | 84.09 | 83.27 | -0.73% | 13,111,200 |
| Sep 5, 2025 | 83.79 | 85.27 | 83.25 | 84.71 | 83.88 | 0.79% | 13,231,140 |
| Sep 4, 2025 | 84.20 | 84.41 | 83.00 | 84.05 | 83.23 | -0.15% | 12,554,844 |
| Sep 3, 2025 | 85.37 | 85.81 | 84.07 | 84.18 | 83.36 | -1.52% | 12,714,400 |
| Sep 2, 2025 | 84.50 | 85.50 | 84.34 | 85.48 | 84.64 | 1.62% | 11,642,713 |
| Aug 29, 2025 | 83.42 | 84.24 | 83.28 | 84.12 | 83.30 | 1.09% | 10,872,919 |