TransAlta (TAC) Stock Chart & Stock Price History $10.79 +0.10 (+0.94%) As of 06/30/2025 03:58 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock TransAlta Stock Price Performance The TransAlta (TAC) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 54.47%, with a year-to-date return of -23.75%. In the past month, the stock has increased 10.44%, reflecting recent market activity. As of the latest close, TransAlta traded at $10.79 with a market cap of $3.20 billion and volume of 778,957 shares. Five years ago, the stock traded at $5.93, representing a 81.96% increase over that period. At the time, it had a market cap of $1.60 billion and a volume of 197,200 shares. 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Email Address 5 Day Performance+0.89%1 Month Performance+10.44%3 Month Performance+14.12%Year-To-Date Performance-23.75%1 Year Performance+54.47%5 Year Performance+81.96% TAC Stock Chart for Tuesday, July, 1, 2025 TAC 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 Capitalization06/30/2025$10.68$10.79+1.08%$10.91$10.69778,957 shs$3.20 billion06/27/2025$10.70$10.68-0.19%$10.86$10.561.21 million shs$3.16 billion06/26/2025$10.87$10.70-1.61%$11.01$10.691.21 million shs$3.17 billion06/25/2025$11.00$10.87-1.20%$11.03$10.77869,400 shs$3.22 billion06/24/2025$11.00$11.00+0.02%$11.23$10.94976,170 shs$3.26 billion06/23/2025$11.00$11.00-0.04%$11.11$10.841.09 million shs$3.26 billion06/20/2025$11.40$11.00-3.43%$11.26$10.983.16 million shs$3.26 billion06/19/2025$11.40$11.40$11.43$11.241.79 million shs$3.38 billion06/18/2025$11.32$11.40+0.71%$11.43$11.241.79 million shs$3.38 billion06/17/2025$11.48$11.32-1.39%$11.50$11.191.62 million shs$3.35 billion Get the Latest News and Ratings for TAC 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. 06/16/2025$11.10$11.48+3.40%$11.49$11.231.61 million shs$3.40 billion06/13/2025$11.39$11.10-2.56%$11.28$10.902.59 million shs$3.29 billion06/12/2025$10.48$11.39+8.74%$11.51$10.693.55 million shs$3.38 billion06/11/2025$10.40$10.48+0.77%$10.77$10.312.33 million shs$3.11 billion06/10/2025$10.41$10.40-0.10%$10.44$10.221.89 million shs$3.08 billion06/09/2025$10.36$10.41+0.43%$10.48$10.252.99 million shs$3.08 billion06/06/2025$10.30$10.36+0.63%$10.41$10.192.34 million shs$3.07 billion06/05/2025$10.14$10.30+1.53%$10.67$10.121.91 million shs$3.05 billion06/04/2025$10.39$10.14-2.44%$10.47$10.021.31 million shs$3.01 billion06/03/2025$9.89$10.39+5.10%$10.51$9.932.05 million shs$3.08 billion06/02/2025$9.77$9.89+1.23%$9.89$9.621.11 million shs$2.93 billion05/30/2025$9.72$9.77+0.57%$9.85$9.521.94 million shs$2.90 billion Related Companies DT Midstream Stock Chart Essential Utilities Stock Chart Companhia Paranaense de Energia - Copel Stock Chart Oklo Stock Chart Brookfield Renewable Partners Stock Chart Kinetik Stock Chart EnLink Midstream Stock Chart Clearway Energy Stock Chart Companhia Paranaense de Energia (COPEL) Stock Chart TXNM Energy Stock Chart Receive TAC 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. 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