Atara Biotherapeutics (ATRA) Stock Chart & Stock Price History $11.39 +0.17 (+1.52%) Closing price 08/6/2025 04:00 PM EasternExtended Trading$11.84 +0.46 (+3.99%) As of 08/6/2025 07:15 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Atara Biotherapeutics Stock Price Performance The Atara Biotherapeutics (ATRA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 52.68%, with a year-to-date return of -14.43%. In the past month, the stock has increased 32.75%, reflecting recent market activity. As of the latest close, Atara Biotherapeutics traded at $11.39 with a market cap of $67.88 million and volume of 24,625 shares. Five years ago, the stock traded at a split-adjusted price of $318.25, representing a 96.42% decrease over that period. At the time, it had a market cap of $749.84 million and a volume of 19,711 shares. Receive ATRA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atara Biotherapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.39%1 Month Performance+32.75%3 Month Performance+56.89%Year-To-Date Performance-14.43%1 Year Performance+52.68%5 Year Performance-96.42% ATRA Stock Chart for Thursday, August, 7, 2025 ATRA Chart by TradingView Atara Biotherapeutics 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 Capitalization08/06/2025$11.22$11.39+1.52%$11.75$10.8624,625 shs$67.88 million08/05/2025$11.32$11.22-0.88%$11.84$11.1519,891 shs$66.88 million08/04/2025$11.55$11.32-1.99%$11.60$11.2014,045 shs$67.47 million08/01/2025$11.52$11.55+0.26%$11.73$10.9239,781 shs$68.84 million07/31/2025$12.11$11.52-4.87%$12.32$11.5040,604 shs$68.66 million07/30/2025$11.73$12.11+3.24%$12.85$11.8190,409 shs$72.19 million07/29/2025$11.81$11.73-0.68%$12.00$11.3647,590 shs$69.91 million07/28/2025$11.58$11.81+1.99%$11.90$10.6942,287 shs$70.39 million07/25/2025$12.23$11.58-5.31%$12.18$10.6890,741 shs$69.02 million07/24/2025$12.26$12.23-0.24%$13.46$12.1889,078 shs$72.90 million Get the Latest News and Ratings for ATRA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Atara Biotherapeutics and its competitors with MarketBeat's FREE daily newsletter. 07/23/2025$13.02$12.26-5.84%$13.23$12.0199,244 shs$73.07 million07/22/2025$11.50$13.02+13.22%$13.21$11.58149,507 shs$77.60 million07/21/2025$10.00$11.50+15.00%$11.70$10.15158,291 shs$68.55 million07/18/2025$9.71$10.00+2.99%$10.99$9.78112,201 shs$59.61 million07/17/2025$9.28$9.71+4.63%$9.80$8.5378,617 shs$57.87 million07/16/2025$9.27$9.28+0.11%$9.29$8.8239,558 shs$55.31 million07/15/2025$9.30$9.27-0.32%$9.62$8.7782,905 shs$55.26 million07/14/2025$9.23$9.30+0.76%$9.44$9.1630,021 shs$55.44 million07/11/2025$9.48$9.23-2.64%$9.60$9.1123,402 shs$55.02 million07/10/2025$9.23$9.48+2.71%$9.60$9.2535,112 shs$56.50 million07/09/2025$9.27$9.23-0.43%$9.44$9.0735,334 shs$55.01 million07/08/2025$8.58$9.27+8.04%$9.35$8.4341,364 shs$55.26 million07/07/2025$8.01$8.58+7.12%$8.68$8.2134,024 shs$51.14 million Related Companies ORIC Stock Price Chart ANNX Stock Price Chart LFCR Stock Price Chart MNPR Stock Price Chart VOR Stock Price Chart ACB Stock Price Chart CRDF Stock Price Chart EDIT Stock Price Chart ZYBT Stock Price Chart DBVT Stock Price Chart Receive ATRA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atara Biotherapeutics and its competitors with MarketBeat's FREE daily newsletter. 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