TransAlta (TA) Stock Chart & Stock Price History C$16.63 +0.07 (+0.42%) As of 10:07 AM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesBuy This Stock TransAlta Stock Price Performance The TransAlta (TA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 49.01%, with a year-to-date return of -18.20%. In the past month, the stock has increased 6.40%, reflecting recent market activity. As of the latest close, TransAlta traded at C$16.56 with a market cap of C$4.97 billion and volume of 627,696 shares. Five years ago, the stock traded at C$8.73, representing a 90.49% increase over that period. At the time, it had a market cap of C$2.35 billion and a volume of 648,161 shares. 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Email Address 5 Day Performance+0.73%1 Month Performance+6.40%3 Month Performance+33.47%Year-To-Date Performance-18.20%1 Year Performance+49.01%5 Year Performance+90.49% TA Stock Chart for Tuesday, August, 12, 2025 TA Chart by TradingView TransAlta 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 Capitalization08/11/2025C$16.63C$16.56-0.42%C$16.69C$16.52627,696 shsC$4.97 billion08/08/2025C$16.51C$16.63+0.73%C$16.77C$16.431.84 million shsC$4.99 billion08/07/2025C$16.74C$16.51-1.37%C$16.73C$16.351.23 million shsC$4.96 billion08/06/2025C$16.62C$16.74+0.72%C$16.83C$16.391.44 million shsC$5.03 billion08/05/2025C$17.08C$16.62-2.69%C$17.20C$16.552.37 million shsC$4.99 billion08/04/2025C$17.08C$17.08C$17.46C$16.401.97 million shsC$5.13 billion08/01/2025C$16.67C$17.08+2.46%C$17.46C$16.401.97 million shsC$5.13 billion07/31/2025C$16.96C$16.67-1.71%C$17.05C$16.561.42 million shsC$5.01 billion07/30/2025C$16.65C$16.96+1.86%C$17.25C$16.671.54 million shsC$5.09 billion07/29/2025C$16.74C$16.65-0.54%C$16.96C$16.561.66 million shsC$5.00 billion Get the Latest News and Ratings for TA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for TransAlta and its competitors with MarketBeat's FREE daily newsletter. 07/28/2025C$16.80C$16.74-0.36%C$16.85C$16.421.97 million shsC$5.03 billion07/25/2025C$16.81C$16.80-0.06%C$16.92C$16.66941,385 shsC$5.05 billion07/24/2025C$17.10C$16.81-1.70%C$17.30C$16.741.64 million shsC$5.05 billion07/23/2025C$16.70C$17.10+2.40%C$17.29C$16.781.32 million shsC$5.14 billion07/22/2025C$16.76C$16.70-0.36%C$16.78C$16.38965,844 shsC$5.02 billion07/21/2025C$16.95C$16.76-1.12%C$16.91C$16.472.58 million shsC$5.03 billion07/18/2025C$16.63C$16.95+1.92%C$17.58C$16.842.42 million shsC$5.09 billion07/17/2025C$16.36C$16.63+1.65%C$16.72C$16.231.30 million shsC$4.99 billion07/16/2025C$16.08C$16.36+1.74%C$16.52C$15.872.62 million shsC$4.91 billion07/15/2025C$15.93C$16.08+0.94%C$16.24C$15.822.33 million shsC$4.83 billion07/14/2025C$15.63C$15.93+1.92%C$16.11C$15.531.65 million shsC$4.78 billion07/11/2025C$15.31C$15.63+2.09%C$15.91C$15.111.86 million shsC$4.69 billion Related Companies EMA Stock Price Chart BEPC Stock Price Chart BIPC Stock Price Chart AQN Stock Price Chart ORA Stock Price Chart ET Stock Price Chart NFG Stock Price Chart ELE Stock Price Chart NEXT Stock Price Chart HOU Stock Price Chart Receive TA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for TransAlta and its competitors with MarketBeat's FREE daily newsletter. This page (TSE:TA) was last updated on 8/12/2025 by MarketBeat.com Staff From Our PartnersWhen the levee breaksThe U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was project...Porter & Company | SponsoredWhy Elon put $51 million into thisChris Rowe has made legendary calls—Tesla at $13, Nvidia at $40, Bitcoin under $1,000, Amazon at 12 cents. Now...True Market Insiders | SponsoredSell this, buy thatWhat you don’t own matters just as much as what you do. 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