Merck & Co. logo
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

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 9, 2026141.37146.68141.36145.60145.602.26%9,288,038
Oct 8, 2026141.90142.77138.89142.38142.38-0.29%7,794,875
Oct 7, 2026142.03144.15141.49142.79142.790.60%6,347,632
Oct 6, 2026140.13142.16139.74141.94141.941.72%8,056,353
Oct 5, 2026143.67144.06138.80139.54139.54-3.30%9,473,247
Oct 2, 2026143.77144.35142.73144.30144.300.34%9,097,440
Oct 1, 2026144.71145.39143.26143.81143.81-1.03%7,852,149
Sep 30, 2026148.95149.27145.26145.31145.31-2.66%10,179,499
Sep 29, 2026148.17150.36146.09149.28149.280.40%7,261,630
Sep 28, 2026147.65149.19146.28148.69148.69-0.06%7,522,287
Sep 25, 2026148.06149.98147.48148.78148.780.54%7,770,529
Sep 24, 2026148.17151.46147.90147.98147.98-0.07%10,298,935
Sep 23, 2026151.32152.01146.89148.08148.08-1.88%9,468,088
Sep 22, 2026148.69153.57148.04150.91150.910.94%11,004,819
Sep 21, 2026146.79150.49145.60149.50149.501.79%7,438,085
Sep 18, 2026147.08147.84145.74146.87146.87-0.19%30,182,829
Sep 17, 2026145.74147.65145.32147.15147.151.55%9,542,015
Sep 16, 2026143.96144.97143.50144.91144.910.78%7,157,106
Sep 15, 2026143.85144.15142.32143.79143.79-0.15%7,780,306
Sep 14, 2026146.42147.09144.10144.85144.000.64%7,377,522
Sep 11, 2026145.52145.90143.68143.93143.09-0.54%8,679,443
Sep 10, 2026147.94148.00144.10144.71143.86-1.91%7,544,530
Sep 9, 2026148.96149.41147.18147.53146.66-0.63%8,546,447
Sep 8, 2026148.41149.60146.28148.46147.59-1.24%11,187,297
Sep 4, 2026150.83152.22150.09150.33149.45-1.32%4,397,467
Sep 3, 2026152.80152.80148.90152.34151.450.46%6,498,969
Sep 2, 2026151.50152.69149.97151.64150.751.19%8,970,603
Sep 1, 2026150.23151.68148.55149.86148.981.42%9,866,566
Aug 31, 2026147.00148.69145.95147.76146.89-0.40%11,126,604
Aug 28, 2026146.72149.01145.75148.35147.48-0.80%8,067,848
Aug 27, 2026149.53152.08149.02149.54148.66-2.33%8,530,989
Aug 26, 2026154.35155.19152.61153.10152.20-2.14%8,634,975
Aug 25, 2026151.00156.92150.66156.45155.533.84%14,005,080
Aug 24, 2026150.72151.52149.14150.66149.78-1.24%15,032,010
Aug 21, 2026149.12154.49148.59152.55151.652.39%15,976,212
Aug 20, 2026150.78152.52148.52148.99148.12-2.11%16,204,664
Aug 19, 2026146.94153.50144.90152.20151.3112.60%32,776,268
Aug 18, 2026137.24137.98134.88135.17134.38-0.59%10,284,238
Aug 17, 2026134.95137.17134.55135.97135.170.10%8,477,590
Aug 14, 2026134.43135.97133.40135.84135.040.21%6,869,004
Aug 13, 2026133.86135.68133.06135.55134.751.98%8,895,212
Aug 12, 2026130.25134.06128.91132.92132.141.92%10,447,088
Aug 11, 2026129.93132.84129.70130.42129.65-0.38%6,342,169
Aug 10, 2026128.29130.98128.24130.92130.151.82%6,007,618
Aug 7, 2026127.84128.75126.68128.58127.830.16%7,347,555
Aug 6, 2026130.96131.08127.80128.37127.620.03%7,052,064
Aug 5, 2026129.41131.09127.56128.33127.580.26%10,501,869
Aug 4, 2026128.46129.99126.22128.00127.250.18%11,816,856
Aug 3, 2026129.87131.47126.72127.77127.02-1.87%11,153,829
Jul 31, 2026128.92131.04128.14130.20129.440.32%7,738,762