Merck & Co., Inc. (MRK) Stock Chart & Stock Price History $87.18 +1.10 (+1.28%) Closing price 08/22/2025 03:59 PM EasternExtended Trading$87.48 +0.29 (+0.34%) As of 08/22/2025 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Merck & Co., Inc. Stock Price Performance The Merck & Co., Inc. (MRK) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 25.23%, with a year-to-date return of -12.36%. In the past month, the stock has increased 3.52%, reflecting recent market activity. As of the latest close, Merck & Co., Inc. traded at $87.18 with a market cap of $217.76 billion and volume of 11.97 million shares. Receive MRK Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Merck & Co., Inc. and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+2.59%1 Month Performance+3.52%3 Month Performance+12.36%Year-To-Date Performance-12.36%1 Year Performance-25.23% MRK Stock Chart for Sunday, August, 24, 2025 MRK Chart by TradingView Merck & Co., Inc. Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization08/22/2025$86.06$87.18+1.30%$87.84$86.7611.97 million shs$217.76 billion08/21/2025$84.67$86.06+1.64%$87.32$84.6013.71 million shs$214.96 billion08/20/2025$84.98$84.67-0.36%$86.25$84.558.90 million shs$211.49 billion08/19/2025$84.21$84.98+0.92%$85.80$84.3814.29 million shs$212.26 billion08/18/2025$84.35$84.21-0.17%$85.15$84.088.27 million shs$210.34 billion08/15/2025$82.77$84.35+1.91%$84.74$83.3610.48 million shs$210.69 billion08/14/2025$82.67$82.77+0.12%$83.40$81.6010.21 million shs$206.75 billion08/13/2025$80.29$82.67+2.96%$82.84$80.2011.04 million shs$206.49 billion08/12/2025$80.09$80.29+0.25%$80.94$79.677.85 million shs$200.55 billion08/11/2025$80.73$80.09-0.79%$81.64$79.638.21 million shs$200.05 billion Get the Latest News and Ratings for MRK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Merck & Co., Inc. and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025$80.29$80.73+0.55%$81.17$80.126.88 million shs$201.65 billion08/07/2025$79.41$80.29+1.11%$80.82$78.6510.83 million shs$201.61 billion08/06/2025$80.78$79.41-1.70%$81.32$79.2712.03 million shs$199.40 billion08/05/2025$79.93$80.78+1.07%$81.13$79.579.98 million shs$202.85 billion08/04/2025$79.27$79.93+0.83%$79.99$78.4313.38 million shs$200.69 billion08/01/2025$78.17$79.27+1.41%$79.87$77.5311.90 million shs$199.05 billion07/31/2025$81.91$78.17-4.57%$81.49$77.8519.79 million shs$196.29 billion07/30/2025$82.77$81.91-1.03%$83.58$81.5212.85 million shs$205.68 billion07/29/2025$84.16$82.77-1.66%$82.89$76.6627.82 million shs$207.83 billion07/28/2025$84.82$84.16-0.78%$84.97$83.8712.86 million shs$211.33 billion07/25/2025$84.22$84.82+0.71%$85.22$83.8410.06 million shs$212.98 billion07/24/2025$83.96$84.22+0.32%$84.51$83.528.01 million shs$211.48 billion07/23/2025$81.70$83.96+2.77%$84.14$82.4111.54 million shs$210.81 billion Related Companies Amgen Stock Price Chart Corcept Therapeutics Stock Price Chart Gilead Sciences Stock Price Chart Moderna Stock Price Chart Vertex Pharmaceuticals Stock Price Chart AbbVie Stock Price Chart Bristol Myers Squibb Stock Price Chart Johnson & Johnson Stock Price Chart Eli Lilly and Company Stock Price Chart Pfizer Stock Price Chart Receive MRK Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Merck & Co., Inc. and its competitors with MarketBeat's FREE daily newsletter. 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