Alnylam Pharmaceuticals (ALNY) Stock Chart & Stock Price History $291.68 -0.18 (-0.06%) As of 05/20/2025 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Alnylam Pharmaceuticals Stock Price Performance The Alnylam Pharmaceuticals (ALNY) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 94.95%, with a year-to-date return of 23.96%. In the past month, the stock has increased 25.32%, reflecting recent market activity. As of the latest close, Alnylam Pharmaceuticals traded at $291.68 with a market cap of $38.03 billion and volume of 627,258 shares. Five years ago, the stock traded at $141.86, representing a 105.61% increase over that period. At the time, it had a market cap of $16.33 billion and a volume of 667,424 shares. 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Email Address 5 Day Performance+2.23%1 Month Performance+25.32%3 Month Performance+16.40%Year-To-Date Performance+23.96%1 Year Performance+94.95%5 Year Performance+105.61% ALNY Stock Chart for Wednesday, May, 21, 2025 ALNY Chart by TradingView Alnylam Pharmaceuticals 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 Capitalization05/20/2025$291.86$291.68-0.06%$292.99$288.25627,258 shs$38.03 billion05/19/2025$285.31$291.86+2.30%$296.80$285.41929,466 shs$38.06 billion05/16/2025$283.40$285.31+0.67%$289.75$280.601.19 million shs$37.20 billion05/15/2025$267.55$283.40+5.92%$285.00$266.181.26 million shs$36.95 billion05/14/2025$266.86$267.55+0.26%$270.00$261.85700,397 shs$34.89 billion05/13/2025$270.19$266.86-1.23%$268.07$261.45723,502 shs$34.80 billion05/12/2025$252.00$270.19+7.22%$270.20$252.791.25 million shs$35.23 billion05/09/2025$258.35$252.00-2.46%$260.00$250.35656,363 shs$32.86 billion05/08/2025$276.55$258.35-6.58%$270.00$245.961.70 million shs$33.69 billion05/07/2025$269.81$276.55+2.50%$277.85$269.72763,317 shs$35.98 billion Get the Latest News and Ratings for ALNY and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Alnylam Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 05/06/2025$273.55$269.81-1.37%$276.47$267.621.56 million shs$35.10 billion05/05/2025$259.39$273.55+5.46%$273.97$257.231.23 million shs$35.58 billion05/02/2025$255.13$259.39+1.67%$265.00$257.12729,702 shs$33.74 billion05/01/2025$263.24$255.13-3.08%$265.91$247.711.52 million shs$33.19 billion04/30/2025$257.19$263.24+2.35%$263.68$253.47949,405 shs$34.24 billion04/29/2025$254.85$257.19+0.92%$260.54$253.83941,496 shs$33.46 billion04/28/2025$251.56$254.85+1.31%$256.57$252.26508,827 shs$33.15 billion04/25/2025$242.61$251.56+3.69%$253.25$240.00835,531 shs$32.72 billion04/24/2025$241.97$242.61+0.26%$243.69$238.62676,835 shs$31.56 billion04/23/2025$236.75$241.97+2.20%$248.59$240.01752,736 shs$31.48 billion04/22/2025$232.75$236.75+1.72%$238.63$231.76885,941 shs$30.80 billion04/21/2025$234.56$232.75-0.77%$237.77$228.28796,447 shs$30.28 billion Related Companies Amgen Stock Price Chart Gilead Sciences Stock Price Chart Vertex Pharmaceuticals Stock Price Chart Regeneron Pharmaceuticals Stock Price Chart Biogen Stock Price Chart United Therapeutics Stock Price Chart Incyte Stock Price Chart Exelixis Stock Price Chart Neurocrine Biosciences Stock Price Chart BioMarin Pharmaceutical Stock Price Chart Receive ALNY Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Alnylam Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 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