Regeneron Pharmaceuticals (REGN) Stock Chart & Stock Price History $635.39 -7.20 (-1.12%) As of 12:53 PM Eastern This is a fair market value price provided by Massive. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy 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 increased 6.46%, with a year-to-date return of -17.68%. In the past month, the stock has decreased 14.89%, reflecting recent market activity. As of the latest close, Regeneron Pharmaceuticals traded at $642.59 with a market cap of $67.93 billion and volume of 1.18 million shares. Five years ago, the stock traded at $506.72, representing a 25.39% increase over that period. At the time, it had a market cap of $53.99 billion and a volume of 593,469 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. Subscribe Now View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Read our full terms of service and privacy policy. 5 Day Performance-9.00%1 Month Performance-14.89%3 Month Performance-18.51%Year-To-Date Performance-17.68%1 Year Performance+6.46%5 Year Performance+25.39% REGN Stock Chart for Friday, May, 22, 2026 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 DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization05/21/2026$649.76$642.59-1.10%$650.32$639.811.18 million shs$67.93 billion05/20/2026$630.30$649.76+3.09%$651.00$633.601.17 million shs$68.69 billion05/19/2026$629.68$630.30+0.10%$639.99$616.021.45 million shs$66.64 billion05/18/2026$698.25$629.68-9.82%$633.00$610.603.00 million shs$66.57 billion05/15/2026$712.87$698.25-2.05%$717.89$693.70728,000 shs$73.82 billion05/14/2026$719.88$712.87-0.97%$722.51$710.06767,153 shs$75.36 billion05/13/2026$723.41$719.88-0.49%$730.59$709.51879,251 shs$76.11 billion05/12/2026$712.77$723.41+1.49%$725.60$710.02824,203 shs$76.48 billion05/11/2026$714.89$712.77-0.30%$727.39$701.991.14 million shs$75.35 billion05/08/2026$709.10$714.89+0.82%$717.99$708.36559,041 shs$74.97 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. 05/07/2026$721.05$709.10-1.66%$725.31$707.43774,545 shs$74.97 billion05/06/2026$702.45$721.05+2.65%$726.16$702.50739,297 shs$76.23 billion05/05/2026N/A$702.45$715.62$699.23642,637 shs$74.26 billion04/30/2026$686.36$707.06+3.02%$708.44$688.951.10 million shs$74.75 billion04/29/2026$731.77$686.36-6.21%$708.80$668.851.83 million shs$72.56 billion04/28/2026$744.44$731.77-1.70%$754.00$730.90568,821 shs$77.36 billion04/27/2026$751.57$744.44-0.95%$756.40$743.61603,115 shs$78.70 billion04/24/2026$766.02$751.57-1.89%$761.96$736.71809,450 shs$79.46 billion04/23/2026$746.58$766.02+2.60%$767.21$747.26928,060 shs$80.98 billion04/22/2026$747.36$746.58-0.10%$755.78$740.47901,899 shs$78.93 billion04/21/2026$749.70$747.36-0.31%$751.54$734.12707,435 shs$79.01 billion Related Companies Amgen Stock Price Chart Gilead Sciences Stock Price Chart Moderna Stock Price Chart Intellia Therapeutics Stock Price Chart Vir Biotechnology Stock Price Chart Vertex Pharmaceuticals Stock Price Chart AbbVie Stock Price Chart Eli Lilly and Company Stock Price Chart Merck & Co., Inc. Stock Price Chart Pfizer 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. This page (NASDAQ:REGN) was last updated on 5/22/2026 by MarketBeat.com Staff. From Our PartnersHow to Profit from Elon’s AI lab before it goes publicElon Musk's AI lab has partnered with the Department of Defense, Oracle, and Palantir - and he just filed conf...InvestorPlace | SponsoredMaybe the Greatest Strategy of the DecadeNate Bear, Lead Technical Tactician at Monument Traders Alliance, is going public with his highest-conviction ...Monument Traders Alliance | SponsoredA letter from Shannon StansberryPorter Stansberry nearly canceled the entire project. 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