AltaGas (ALA) Stock Chart & Stock Price History C$40.22 -0.04 (-0.10%) As of 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesBuy This Stock AltaGas Stock Price Performance The AltaGas (ALA) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 23.53%, with a year-to-date return of 20.13%. In the past month, the stock has increased 5.12%, reflecting recent market activity. As of the latest close, AltaGas traded at C$40.26 with a market cap of C$11.98 billion and volume of 512,871 shares. Five years ago, the stock traded at C$16.73, representing a 140.41% increase over that period. At the time, it had a market cap of C$4.74 billion and a volume of 944,975 shares. Receive ALA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for AltaGas and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.57%1 Month Performance+5.12%3 Month Performance+0.47%Year-To-Date Performance+20.13%1 Year Performance+23.53%5 Year Performance+140.41% ALA Stock Chart for Friday, July, 25, 2025 ALA Chart by TradingView AltaGas 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 Capitalization07/25/2025C$40.26C$40.22-0.10%C$40.45C$40.12383,401 shsC$11.97 billion07/24/2025C$40.35C$40.26-0.22%C$40.51C$40.20512,871 shsC$11.98 billion07/23/2025C$40.17C$40.35+0.45%C$40.66C$40.06791,240 shsC$12.01 billion07/22/2025C$40.37C$40.17-0.50%C$40.69C$40.08683,904 shsC$11.96 billion07/21/2025C$40.86C$40.37-1.20%C$40.90C$40.14533,443 shsC$12.02 billion07/18/2025C$40.74C$40.86+0.29%C$41.13C$40.67505,217 shsC$12.16 billion07/17/2025C$40.05C$40.74+1.72%C$41.00C$39.941.27 million shsC$12.13 billion07/16/2025C$40.11C$40.05-0.15%C$40.31C$39.90960,107 shsC$11.92 billion07/15/2025C$39.58C$40.11+1.34%C$40.20C$39.521.03 million shsC$11.94 billion07/14/2025C$39.20C$39.58+0.97%C$39.60C$39.12388,442 shsC$11.78 billion Get the Latest News and Ratings for ALA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for AltaGas and its competitors with MarketBeat's FREE daily newsletter. 07/11/2025C$39.03C$39.20+0.44%C$39.23C$38.66540,594 shsC$11.67 billion07/10/2025C$38.53C$39.03+1.30%C$39.30C$38.40528,624 shsC$11.62 billion07/09/2025C$38.84C$38.53-0.80%C$38.77C$38.40330,497 shsC$11.47 billion07/08/2025C$38.41C$38.84+1.12%C$38.88C$38.16661,046 shsC$11.56 billion07/07/2025C$38.42C$38.41-0.03%C$38.48C$38.14602,515 shsC$11.43 billion07/04/2025C$38.39C$38.42+0.08%C$38.63C$38.26186,489 shsC$11.44 billion07/03/2025C$38.95C$38.39-1.44%C$39.09C$38.29293,168 shsC$11.43 billion07/02/2025C$39.53C$38.95-1.47%C$39.60C$38.67781,047 shsC$11.59 billion07/01/2025C$39.53C$39.53C$39.56C$38.54772,510 shsC$11.77 billion06/30/2025C$38.59C$39.53+2.44%C$39.56C$38.54772,510 shsC$11.77 billion06/27/2025C$38.38C$38.59+0.55%C$39.02C$38.49758,849 shsC$11.49 billion06/26/2025C$38.26C$38.38+0.31%C$38.50C$38.03587,802 shsC$11.43 billion06/25/2025C$38.32C$38.26-0.16%C$38.37C$37.80555,009 shsC$11.39 billion06/24/2025C$38.46C$38.32-0.36%C$38.59C$38.20423,402 shsC$11.41 billion Related Companies Pembina Pipeline Stock Chart Keyera Stock Chart Gibson Energy Stock Chart Topaz Energy Stock Chart Tidewater Midstream and Infrastructure Stock Chart Enbridge Stock Chart TC Energy Stock Chart Cameco Stock Chart Cenovus Energy Stock Chart Tourmaline Oil Stock Chart Receive ALA Stock News and Ratings via EmailSign-up to receive the latest news and ratings for AltaGas and its competitors with MarketBeat's FREE daily newsletter. 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