Generation Bio (GBIO) Stock Chart & Stock Price History $6.13 -0.18 (-2.85%) As of 03:34 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Generation Bio Stock Price Performance The Generation Bio (GBIO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 72.76%, with a year-to-date return of -42.17%. In the past month, the stock has increased 2.51%, reflecting recent market activity. As of the latest close, Generation Bio traded at $6.31 with a market cap of $42.53 million and volume of 36,422 shares. Five years ago, the stock traded at a split-adjusted price of $281.50, representing a 97.82% decrease over that period. At the time, it had a market cap of $1.31 billion and a volume of 5,166 shares. Receive GBIO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Generation Bio 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. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. 5 Day Performance-3.31%1 Month Performance+2.51%3 Month Performance+64.39%Year-To-Date Performance-42.17%1 Year Performance-72.76%5 Year Performance-97.82% GBIO Stock Chart for Friday, October, 10, 2025 GBIO Chart by TradingView Generation Bio 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 Capitalization10/09/2025$6.33$6.31-0.32%$6.44$6.1236,422 shs$42.53 million10/08/2025$6.23$6.33+1.61%$6.48$6.1550,900 shs$42.66 million10/07/2025$6.27$6.23-0.64%$6.36$5.9624,406 shs$41.96 million10/06/2025$6.34$6.27-1.10%$6.38$6.1433,238 shs$42.26 million10/03/2025$6.14$6.34+3.26%$6.38$6.1236,315 shs$42.73 million10/02/2025$6.03$6.14+1.82%$6.37$5.9520,277 shs$41.38 million10/01/2025$6.12$6.03-1.47%$6.30$5.9565,829 shs$40.61 million09/30/2025$5.98$6.12+2.34%$6.12$5.7828,423 shs$41.25 million09/29/2025$6.00$5.98-0.33%$6.23$5.9043,817 shs$40.31 million09/26/2025$5.72$6.00+4.90%$6.07$5.5889,244 shs$40.44 million Get the Latest News and Ratings for GBIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Generation Bio and its competitors with MarketBeat's FREE daily newsletter. 09/25/2025$5.76$5.72-0.69%$5.80$5.6214,689 shs$38.52 million09/24/2025$5.74$5.76+0.35%$5.82$5.6622,252 shs$38.82 million09/23/2025$5.79$5.74-0.86%$5.81$5.5559,039 shs$38.69 million09/22/2025$5.75$5.79+0.70%$5.98$5.7237,689 shs$39.00 million09/19/2025$5.98$5.75-3.85%$6.05$5.7581,913 shs$38.73 million09/18/2025$5.77$5.98+3.64%$6.03$5.7428,966 shs$40.31 million09/17/2025$5.95$5.77-3.03%$6.01$5.7230,943 shs$38.89 million09/16/2025$5.59$5.95+6.44%$6.04$5.61173,074 shs$40.07 million09/15/2025$5.93$5.59-5.73%$6.00$5.51181,224 shs$37.68 million09/12/2025$6.01$5.93-1.33%$6.00$5.6168,564 shs$39.97 million09/11/2025$5.98$6.01+0.50%$6.09$5.9319,657 shs$40.51 million09/10/2025$6.15$5.98-2.76%$6.25$5.9822,078 shs$40.28 million09/09/2025$5.83$6.15+5.49%$6.24$5.7961,072 shs$41.45 million Related Companies ELDN Stock Price Chart PEPG Stock Price Chart GNLX Stock Price Chart IXHL Stock Price Chart ACTU Stock Price Chart CCCC Stock Price Chart PYXS Stock Price Chart CTOR Stock Price Chart THTX Stock Price Chart ACOG Stock Price Chart Receive GBIO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Generation Bio and its competitors with MarketBeat's FREE daily newsletter. This page (NASDAQ:GBIO) was last updated on 10/10/2025 by MarketBeat.com Staff From Our PartnersBitcoin grabs headlines, but smart money likes this tokenIf you're a futures trader (or want to be one), this could be the biggest shift you'll ever see in the prop fi...Neuro Street Trading Academy | SponsoredYour Bank Account Is No Longer SafeWhat If Washington Declared That: YOUR Money ISN'T Actually Yours? 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