ATCO (ACO.X) Stock Chart & Stock Price History C$50.95 -0.39 (-0.76%) As of 08/22/2025 04:19 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsHeadlinesInsider TradesBuy This Stock ATCO Stock Price Performance The ATCO (ACO.X) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 13.32%, with a year-to-date return of 7.08%. In the past month, the stock has decreased 0.60%, reflecting recent market activity. As of the latest close, ATCO traded at C$50.95 with a market cap of C$5.08 billion and volume of 234,348 shares. Five years ago, the stock traded at C$41.10, representing a 23.97% increase over that period. At the time, it had a market cap of C$4.17 billion and a volume of 109,410 shares. Receive ACO.X Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ATCO and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance+0.33%1 Month Performance-0.60%3 Month Performance-2.19%Year-To-Date Performance+7.08%1 Year Performance+13.32%5 Year Performance+23.97% ACO.X Stock Chart for Sunday, August, 24, 2025 ACO.X Chart by TradingView ATCO 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 Capitalization08/22/2025C$51.34C$50.95-0.76%C$51.72C$50.80234,348 shsC$5.08 billion08/21/2025C$50.77C$51.34+1.12%C$51.51C$50.72233,648 shsC$5.12 billion08/20/2025C$50.78C$50.77-0.02%C$51.16C$50.71372,831 shsC$5.06 billion08/19/2025C$50.58C$50.78+0.40%C$51.00C$50.50187,631 shsC$5.06 billion08/18/2025C$51.01C$50.58-0.84%C$51.15C$50.40273,063 shsC$5.04 billion08/15/2025C$50.81C$51.01+0.39%C$51.15C$50.71204,822 shsC$5.09 billion08/14/2025C$50.43C$50.81+0.75%C$50.86C$50.28277,336 shsC$5.07 billion08/13/2025C$50.77C$50.43-0.67%C$51.23C$50.40115,768 shsC$5.03 billion08/12/2025C$50.80C$50.77-0.06%C$51.42C$50.54215,687 shsC$5.06 billion08/11/2025C$50.33C$50.80+0.93%C$50.82C$50.20122,667 shsC$5.07 billion Get the Latest News and Ratings for ACO.X and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ATCO and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025C$50.56C$50.33-0.45%C$50.83C$50.32227,192 shsC$5.02 billion08/07/2025C$50.54C$50.56+0.04%C$50.57C$50.18117,291 shsC$5.04 billion08/06/2025C$50.40C$50.54+0.28%C$50.75C$50.21152,546 shsC$5.04 billion08/05/2025C$50.89C$50.40-0.96%C$51.31C$50.04238,100 shsC$5.03 billion08/04/2025C$50.89C$50.89C$51.11C$50.30164,933 shsC$5.08 billion08/01/2025C$50.18C$50.89+1.41%C$51.11C$50.30164,933 shsC$5.08 billion07/31/2025C$52.23C$50.18-3.92%C$52.04C$49.70513,743 shsC$5.00 billion07/30/2025C$51.63C$52.23+1.16%C$52.27C$51.70229,524 shsC$5.21 billion07/29/2025C$51.15C$51.63+0.94%C$51.83C$51.14246,635 shsC$5.15 billion07/28/2025C$51.00C$51.15+0.29%C$51.21C$50.63235,466 shsC$5.10 billion07/25/2025C$51.26C$51.00-0.51%C$51.45C$50.90164,099 shsC$5.09 billion07/24/2025C$51.17C$51.26+0.18%C$51.45C$51.15114,236 shsC$5.11 billion07/23/2025C$51.84C$51.17-1.29%C$52.00C$51.15278,435 shsC$5.10 billion Related Companies BIP.UN Stock Chart CU Stock Chart ACO.Y Stock Chart EMA Stock Chart BEP.UN Stock Chart CPX Stock Chart NPI Stock Chart TA Stock Chart BEPC Stock Chart BIPC Stock Chart Receive ACO.X Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ATCO and its competitors with MarketBeat's FREE daily newsletter. 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