Biogen (BIIB) Stock Chart & Stock Price History $125.59 -0.49 (-0.39%) As of 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Biogen Stock Price Performance The Biogen (BIIB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 45.82%, with a year-to-date return of -17.87%. In the past month, the stock has decreased 4.21%, reflecting recent market activity. As of the latest close, Biogen traded at $126.08 with a market cap of $18.47 billion and volume of 1.10 million shares. Five years ago, the stock traded at $267.55, representing a 53.06% decrease over that period. At the time, it had a market cap of $42.21 billion and a volume of 1.27 million shares. 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Email Address 5 Day Performance-1.35%1 Month Performance-4.21%3 Month Performance-9.24%Year-To-Date Performance-17.87%1 Year Performance-45.82%5 Year Performance-53.06% BIIB Stock Chart for Monday, June, 30, 2025 BIIB Chart by TradingView Biogen 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 Capitalization06/27/2025$126.92$126.08-0.66%$128.25$125.601.10 million shs$18.47 billion06/26/2025$127.31$126.92-0.31%$129.27$126.46864,859 shs$18.60 billion06/25/2025$126.31$127.31+0.79%$127.98$125.131.10 million shs$18.65 billion06/24/2025$124.76$126.31+1.24%$127.36$125.02938,157 shs$18.51 billion06/23/2025$127.04$124.76-1.79%$127.68$123.211.19 million shs$18.28 billion06/20/2025$126.54$127.04+0.40%$128.64$126.122.17 million shs$18.62 billion06/19/2025$126.54$126.54$127.88$125.242.33 million shs$18.54 billion06/18/2025$126.56$126.54-0.02%$127.88$125.242.33 million shs$18.54 billion06/17/2025$131.04$126.56-3.42%$130.70$126.491.15 million shs$18.54 billion06/16/2025$130.65$131.04+0.30%$131.58$128.831.11 million shs$19.20 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. 06/13/2025$132.31$130.65-1.25%$132.49$130.111.21 million shs$19.14 billion06/12/2025$133.06$132.31-0.56%$134.12$131.471.15 million shs$19.39 billion06/11/2025$135.49$133.06-1.79%$136.41$132.901.33 million shs$19.50 billion06/10/2025$134.15$135.49+1.00%$136.84$133.42991,016 shs$19.85 billion06/09/2025$133.13$134.15+0.77%$135.69$132.931.08 million shs$19.66 billion06/06/2025$130.36$133.13+2.12%$133.72$131.451.17 million shs$19.51 billion06/05/2025$131.86$130.36-1.14%$132.12$129.611.24 million shs$19.10 billion06/04/2025$131.84$131.86+0.02%$133.66$131.671.47 million shs$19.32 billion06/03/2025$131.14$131.84+0.53%$134.74$129.511.82 million shs$19.32 billion06/02/2025$131.11$131.14+0.02%$131.85$128.071.87 million shs$19.22 billion05/30/2025$132.75$131.11-1.24%$132.59$129.623.64 million shs$19.21 billion05/29/2025$127.53$132.75+4.09%$132.94$127.531.96 million shs$19.45 billion Related Companies Regeneron Pharmaceuticals Stock Chart Alnylam Pharmaceuticals Stock Chart Incyte Stock Chart United Therapeutics Stock Chart Neurocrine Biosciences Stock Chart Exelixis Stock Chart BioMarin Pharmaceutical 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. This page (NASDAQ:BIIB) was last updated on 6/30/2025 by MarketBeat.com Staff From Our PartnersBuffett’s $325 Billion Cash Problem — Solved by Gold?A bombshell announcement is just weeks away — and it could send shockwaves through the gold market. 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