Repligen (RGEN) Stock Chart & Stock Price History $145.93 -4.17 (-2.78%) Closing price 04:00 PM EasternExtended Trading$145.90 -0.03 (-0.02%) As of 07:31 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Repligen Stock Price Performance The Repligen (RGEN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 6.84%, with a year-to-date return of 1.38%. In the past month, the stock has increased 17.16%, reflecting recent market activity. As of the latest close, Repligen traded at $150.10 with a market cap of $8.44 billion and volume of 894,239 shares. Five years ago, the stock traded at $165.03, representing a 11.57% decrease over that period. At the time, it had a market cap of $8.66 billion and a volume of 479,698 shares. Receive RGEN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Repligen and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy 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+0.48%1 Month Performance+17.16%3 Month Performance+17.28%Year-To-Date Performance+1.38%1 Year Performance+6.84%5 Year Performance-11.57% RGEN Stock Chart for Tuesday, October, 7, 2025 RGEN Chart by TradingView Repligen 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 Capitalization10/07/2025$150.10$145.93-2.78%$152.30$144.071.18 million shs$8.21 billion10/06/2025$148.73$150.10+0.92%$150.75$147.07894,239 shs$8.44 billion10/03/2025$145.23$148.73+2.41%$150.15$144.701.29 million shs$8.37 billion10/02/2025$145.81$145.23-0.40%$148.48$143.261.14 million shs$8.17 billion10/01/2025$133.67$145.81+9.08%$147.04$134.191.68 million shs$8.20 billion09/30/2025$124.09$133.67+7.72%$134.09$123.981.19 million shs$7.52 billion09/29/2025$125.61$124.09-1.21%$125.85$123.68743,270 shs$6.98 billion09/26/2025$121.68$125.61+3.23%$125.93$121.99563,135 shs$7.07 billion09/25/2025$124.51$121.68-2.27%$124.44$121.18612,695 shs$6.85 billion09/24/2025$123.95$124.51+0.45%$125.81$122.521.12 million shs$7.00 billion Get the Latest News and Ratings for RGEN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Repligen and its competitors with MarketBeat's FREE daily newsletter. 09/23/2025$125.94$123.95-1.58%$128.24$123.67598,907 shs$6.97 billion09/22/2025$122.30$125.94+2.98%$127.71$123.65758,926 shs$7.09 billion09/19/2025$124.38$122.30-1.67%$126.66$122.121.10 million shs$6.88 billion09/18/2025$119.39$124.38+4.18%$125.87$121.77757,732 shs$7.00 billion09/17/2025$119.75$119.39-0.30%$123.00$117.141.09 million shs$6.72 billion09/16/2025$113.74$119.75+5.28%$120.16$112.841.36 million shs$6.74 billion09/15/2025$113.54$113.74+0.18%$115.72$112.73647,059 shs$6.40 billion09/12/2025$119.51$113.54-5.00%$118.64$113.48707,503 shs$6.39 billion09/11/2025$120.23$119.51-0.60%$122.71$118.91624,455 shs$6.72 billion09/10/2025$118.69$120.23+1.30%$122.70$117.55986,487 shs$6.76 billion09/09/2025$120.70$118.69-1.67%$120.18$117.18526,068 shs$6.68 billion09/08/2025$124.56$120.70-3.10%$123.26$119.13782,529 shs$6.79 billion Related Companies Bio-Techne Stock Price Chart Agilent Technologies Stock Price Chart Danaher Stock Price Chart Thermo Fisher Scientific Stock Price Chart Biogen Stock Price Chart United Therapeutics Stock Price Chart Incyte Stock Price Chart Neurocrine Biosciences Stock Price Chart Exelixis Stock Price Chart BioMarin Pharmaceutical Stock Price Chart Receive RGEN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Repligen and its competitors with MarketBeat's FREE daily newsletter. 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