Regeneron Pharmaceuticals (REGN) Stock Chart & Stock Price History $588.34 -8.51 (-1.43%) Closing price 05/23/2025 04:00 PM EasternExtended Trading$591.22 +2.88 (+0.49%) As of 05/23/2025 07:20 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 ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Regeneron Pharmaceuticals Stock Price Performance The Regeneron Pharmaceuticals (REGN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 40.27%, with a year-to-date return of -17.41%. In the past month, the stock has decreased 2.37%, reflecting recent market activity. As of the latest close, Regeneron Pharmaceuticals traded at $588.34 with a market cap of $63.52 billion and volume of 655,734 shares. Five years ago, the stock traded at $569.91, representing a 3.23% increase over that period. At the time, it had a market cap of $62.70 billion and a volume of 653,533 shares. Receive REGN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Regeneron Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-4.30%1 Month Performance-2.37%3 Month Performance-18.68%Year-To-Date Performance-17.41%1 Year Performance-40.27%5 Year Performance+3.23% REGN Stock Chart for Sunday, May, 25, 2025 REGN Chart by TradingView Regeneron 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 Capitalization05/23/2025$596.85$588.34-1.43%$591.64$582.37655,734 shs$63.52 billion05/22/2025$604.62$596.85-1.29%$605.50$592.72867,167 shs$64.44 billion05/21/2025$614.79$604.62-1.65%$617.52$597.921.09 million shs$65.28 billion05/20/2025$596.54$614.79+3.06%$615.45$595.011.10 million shs$66.38 billion05/19/2025$594.32$596.54+0.37%$598.56$586.68666,223 shs$64.41 billion05/16/2025$584.99$594.32+1.59%$595.19$581.49935,531 shs$64.17 billion05/15/2025$571.36$584.99+2.39%$585.26$564.911.30 million shs$63.95 billion05/14/2025$574.16$571.36-0.49%$580.56$567.591.66 million shs$62.46 billion05/13/2025$575.63$574.16-0.26%$575.05$558.451.08 million shs$62.77 billion05/12/2025$527.78$575.63+9.07%$577.99$535.291.90 million shs$62.93 billion Get the Latest News and Ratings for REGN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Regeneron Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 05/09/2025$547.55$527.78-3.61%$552.84$527.131.50 million shs$57.70 billion05/08/2025$560.70$547.55-2.34%$552.57$520.502.71 million shs$59.86 billion05/07/2025$558.52$560.70+0.39%$568.13$556.361.14 million shs$61.30 billion05/06/2025$603.58$558.52-7.47%$606.87$557.641.42 million shs$61.06 billion05/05/2025$605.61$603.58-0.34%$611.04$601.811.12 million shs$65.99 billion05/02/2025$590.00$605.61+2.65%$615.61$599.081.61 million shs$66.21 billion05/01/2025$598.76$590.00-1.46%$593.94$578.501.19 million shs$64.50 billion04/30/2025$568.91$598.76+5.25%$600.20$566.991.68 million shs$65.46 billion04/29/2025$610.86$568.91-6.87%$579.98$542.442.62 million shs$62.20 billion04/28/2025$602.64$610.86+1.36%$614.83$601.191.18 million shs$66.78 billion04/25/2025$599.76$602.64+0.48%$602.79$585.78964,377 shs$65.88 billion04/24/2025$587.85$599.76+2.03%$601.28$586.811.32 million shs$65.57 billion Related Companies Amgen Stock Price Chart Gilead Sciences Stock Price Chart Vertex Pharmaceuticals Stock Price Chart Alnylam 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 REGN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Regeneron Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 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