Biogen (BIIB) Stock Chart & Stock Price History $139.73 +2.65 (+1.93%) As of 02:12 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Biogen Stock Price Performance 5 Day Performance-0.18%1 Month Performance-2.77%3 Month Performance-13.48%6 Month Performance-33.51%Year-To-Date Performance-10.36%1 Year Performance-38.00% Receive BIIB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Biogen and its competitors with MarketBeat's FREE daily newsletter. Email Address BIIB Stock Chart for Friday, February, 21, 2025 BIIB Chart by TradingView Biogen 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 Capitalization02/20/2025$136.54$137.08+0.40%$138.94$136.522.06 million shs$20.07 billion02/19/2025$136.57$136.54-0.03%$137.79$135.021.55 million shs$19.99 billion02/18/2025$137.33$136.57-0.55%$139.16$135.941.33 million shs$19.90 billion02/17/2025$137.33$137.33$141.69$136.051.69 million shs$20.01 billion02/14/2025$138.45$137.33-0.81%$141.69$136.051.69 million shs$20.01 billion02/13/2025$133.43$138.45+3.76%$139.10$132.152.26 million shs$20.17 billion02/12/2025$139.39$133.43-4.28%$137.80$128.513.53 million shs$19.44 billion02/11/2025$142.54$139.39-2.21%$141.56$138.721.91 million shs$20.31 billion02/10/2025$141.35$142.54+0.84%$142.68$140.061.52 million shs$20.77 billion02/07/2025$142.37$141.35-0.72%$143.69$140.751.15 million shs$20.60 billion Get the Latest News and Ratings for BIIB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Biogen and its competitors with MarketBeat's FREE daily newsletter. 02/06/2025$145.53$142.37-2.17%$145.98$141.691.33 million shs$20.75 billion02/05/2025$142.49$145.53+2.13%$147.00$142.641.17 million shs$21.21 billion02/04/2025$142.34$142.49+0.11%$143.98$141.071.06 million shs$20.76 billion02/03/2025$143.93$142.34-1.10%$144.50$141.641.11 million shs$20.74 billion01/31/2025$146.23$143.93-1.57%$147.40$143.631.40 million shs$20.97 billion01/30/2025$144.41$146.23+1.26%$147.64$145.241.11 million shs$21.31 billion01/29/2025$145.49$144.41-0.74%$147.38$143.341.48 million shs$21.04 billion01/28/2025$148.76$145.49-2.20%$148.55$145.081.30 million shs$21.20 billion01/27/2025$146.20$148.76+1.75%$149.67$146.551.66 million shs$21.68 billion01/24/2025$143.67$146.20+1.76%$146.33$141.981.30 million shs$21.30 billion01/23/2025$142.75$143.67+0.64%$143.77$139.831.47 million shs$20.94 billion01/22/2025$140.98$142.75+1.26%$143.15$139.711.08 million shs$20.80 billion01/21/2025$140.55$140.98+0.31%$142.09$140.591.18 million shs$20.54 billion01/20/2025$140.55$140.55$143.50$140.061.15 million shs$20.48 billion Related Companies Regeneron Pharmaceuticals Stock Chart Alnylam Pharmaceuticals Stock Chart United Therapeutics Stock Chart Incyte Stock Chart BioMarin Pharmaceutical Stock Chart Neurocrine Biosciences Stock Chart Exelixis Stock Chart Exact Sciences Stock Chart Repligen Stock Chart Halozyme Therapeutics Stock Chart Receive BIIB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Biogen and its competitors with MarketBeat's FREE daily newsletter. 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