Regeneron Pharmaceuticals (REGN) Stock Chart & Stock Price History $658.48 -4.14 (-0.62%) Closing price 03/21/2025 04:00 PM EasternExtended Trading$662.95 +4.47 (+0.68%) As of 03/21/2025 07:53 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 5 Day Performance-0.97%1 Month Performance-5.98%3 Month Performance-7.92%6 Month Performance-39.70%Year-To-Date Performance-7.56%1 Year Performance-31.92% 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 REGN Stock Chart for Monday, March, 24, 2025 REGN Chart by TradingViewRemove Ads Regeneron Pharmaceuticals Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization03/21/2025$662.62$658.48-0.62%$661.00$651.061.87 million shs$71.99 billion03/20/2025$672.36$662.62-1.45%$674.83$662.33662,954 shs$72.44 billion03/19/2025$664.96$672.36+1.11%$674.57$659.03675,613 shs$73.51 billion03/18/2025$678.42$664.96-1.98%$678.27$664.30608,052 shs$72.70 billion03/17/2025$666.87$678.42+1.73%$679.83$664.68942,881 shs$74.17 billion03/14/2025$680.61$666.87-2.02%$686.98$657.001.31 million shs$72.91 billion03/13/2025$689.50$680.61-1.29%$698.95$677.34863,695 shs$74.41 billion03/12/2025$718.16$689.50-3.99%$712.46$683.43807,980 shs$75.38 billion03/11/2025$744.83$718.16-3.58%$747.70$712.391.11 million shs$78.51 billion03/10/2025$707.51$744.83+5.27%$748.29$709.381.63 million shs$81.43 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. 03/07/2025$698.44$707.51+1.30%$729.75$696.431.08 million shs$77.35 billion03/06/2025$687.15$698.44+1.64%$701.00$682.26866,396 shs$76.36 billion03/05/2025$675.49$687.15+1.73%$692.79$673.15828,674 shs$75.12 billion03/04/2025$684.87$675.49-1.37%$697.46$672.501.20 million shs$73.85 billion03/03/2025$698.74$684.87-1.99%$704.64$683.46708,523 shs$74.87 billion02/28/2025$702.78$698.74-0.57%$708.58$693.711.03 million shs$76.39 billion02/27/2025$706.94$702.78-0.59%$721.00$700.67568,430 shs$76.83 billion02/26/2025$723.47$706.94-2.28%$721.41$701.07712,848 shs$77.29 billion02/25/2025$713.25$723.47+1.43%$739.00$715.501.05 million shs$79.09 billion02/24/2025$700.33$713.25+1.84%$725.00$700.43896,401 shs$77.98 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 BioMarin Pharmaceutical Stock Price Chart Incyte Stock Price Chart Neurocrine Biosciences Stock Price Chart Exelixis 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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