Alector (ALEC) Stock Chart & Stock Price History $1.25 -0.12 (-8.76%) Closing price 05/21/2025 04:00 PM EasternExtended Trading$1.30 +0.05 (+4.40%) As of 06:33 AM 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 ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Alector Stock Price Performance The Alector (ALEC) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 77.02%, with a year-to-date return of -33.86%. In the past month, the stock has increased 12.61%, reflecting recent market activity. As of the latest close, Alector traded at $1.25 with a market cap of $124.99 million and volume of 1.20 million shares. Five years ago, the stock traded at $33.10, representing a 96.22% decrease over that period. At the time, it had a market cap of $2.50 billion and a volume of 493,374 shares. Receive ALEC Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Alector and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+2.46%1 Month Performance+12.61%3 Month Performance-33.16%Year-To-Date Performance-33.86%1 Year Performance-77.02%5 Year Performance-96.22% ALEC Stock Chart for Thursday, May, 22, 2025 ALEC Chart by TradingView Alector 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 Capitalization05/21/2025$1.37$1.25-8.76%$1.36$1.251.20 million shs$124.99 million05/20/2025$1.27$1.37+7.87%$1.42$1.252.28 million shs$136.99 million05/19/2025$1.22$1.27+4.10%$1.30$1.19847,231 shs$126.99 million05/16/2025$1.11$1.22+10.41%$1.27$1.091.80 million shs$121.99 million05/15/2025$1.07$1.11+3.27%$1.11$1.011.33 million shs$110.49 million05/14/2025$1.11$1.07-3.60%$1.15$1.063.17 million shs$106.99 million05/13/2025$1.20$1.11-7.50%$1.22$1.10921,141 shs$110.99 million05/12/2025$1.18$1.20+2.13%$1.26$1.191.16 million shs$119.99 million05/09/2025$1.05$1.18+12.44%$1.22$1.011.41 million shs$117.49 million05/08/2025$1.03$1.05+1.95%$1.07$0.97753,749 shs$104.49 million Get the Latest News and Ratings for ALEC and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Alector and its competitors with MarketBeat's FREE daily newsletter. 05/07/2025$1.05$1.03-2.38%$1.05$1.00693,367 shs$102.49 million05/06/2025$1.16$1.05-9.48%$1.13$1.04917,933 shs$104.99 million05/05/2025$1.30$1.16-10.77%$1.30$1.15695,287 shs$115.99 million05/02/2025$1.22$1.30+6.56%$1.34$1.221.28 million shs$128.81 million05/01/2025$1.20$1.22+1.67%$1.23$1.111.61 million shs$120.89 million04/30/2025$1.13$1.20+6.19%$1.21$1.071.54 million shs$118.90 million04/29/2025$1.16$1.13-2.59%$1.18$1.12373,008 shs$111.97 million04/28/2025$1.14$1.16+1.75%$1.18$1.12605,659 shs$114.94 million04/25/2025$1.18$1.14-3.39%$1.20$1.13452,274 shs$112.96 million04/24/2025$1.16$1.18+1.72%$1.20$1.15553,408 shs$116.92 million04/23/2025$1.11$1.16+4.50%$1.24$1.121.70 million shs$114.94 million04/22/2025$0.97$1.11+14.03%$1.15$0.992.73 million shs$109.99 million04/21/2025$0.92$0.97+5.79%$0.99$0.90673,018 shs$96.45 million Related Companies Relay Therapeutics Stock Price Chart Arvinas Stock Price Chart Zevra Therapeutics Stock Price Chart Upstream Bio Stock Price Chart Ginkgo Bioworks Stock Price Chart REGENXBIO Stock Price Chart Cullinan Therapeutics Stock Price Chart Septerna Stock Price Chart Sage Therapeutics Stock Price Chart Amylyx Pharmaceuticals Stock Price Chart Receive ALEC Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Alector and its competitors with MarketBeat's FREE daily newsletter. 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