Hydro One (HRNNF) Stock Chart & Stock Price History $36.27 -0.25 (-0.68%) As of 03:50 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartHeadlinesSEC FilingsShort InterestBuy This Stock Hydro One Stock Price Performance The Hydro One (HRNNF) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 8.53%, with a year-to-date return of 18.65%. In the past month, the stock has increased 2.63%, reflecting recent market activity. As of the latest close, Hydro One traded at $36.52 with a market cap of and volume of 619,613 shares. Five years ago, the stock traded at $21.01, representing a 72.67% increase over that period. At the time, it had a market cap of and a volume of 274 shares. Receive HRNNF Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Hydro One and its competitors with MarketBeat's FREE daily newsletter. 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Read our full terms of service and privacy policy. 5 Day Performance-1.63%1 Month Performance+2.63%3 Month Performance-2.47%Year-To-Date Performance+18.65%1 Year Performance+8.53%5 Year Performance+72.67% HRNNF Stock Chart for Thursday, August, 28, 2025 HRNNF Chart by TradingView Hydro One 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 Capitalization08/28/2025$36.52$36.27-0.68%$36.44$36.2714,325 shs$0.0008/27/2025$36.36$36.52+0.44%$36.52$36.45619,613 shs$0.0008/26/2025$36.44$36.36-0.23%$36.37$36.366,105 shs$0.0008/25/2025$36.87$36.44-1.16%$36.44$36.4428,875 shs$0.0008/22/2025$36.81$36.87+0.17%$36.87$36.7740,069 shs$0.0008/21/2025$36.52$36.81+0.78%$36.81$36.72215 shs$0.0008/20/2025$36.52$36.52$36.52$36.52248 shs$0.0008/19/2025$36.87$36.52-0.94%$36.52$36.52248 shs$0.0008/18/2025$36.76$36.87+0.30%$36.87$36.87100 shs$0.0008/15/2025$36.76$36.76$36.76$36.49864 shs$0.00 Get the Latest News and Ratings for HRNNF and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Hydro One and its competitors with MarketBeat's FREE daily newsletter. 08/14/2025$36.78$36.76-0.05%$36.76$36.49864 shs$0.0008/13/2025$37.11$36.78-0.89%$37.18$36.781,815 shs$0.0008/12/2025$37.11$37.11$37.20$37.111,142 shs$0.0008/11/2025$37.01$37.11+0.27%$37.20$37.111,142 shs$0.0008/08/2025$36.35$37.01+1.82%$37.20$37.01285 shs$0.0008/07/2025$36.35$36.35$36.35$36.35116 shs$0.0008/06/2025$36.20$36.35+0.41%$36.35$36.35116 shs$0.0008/05/2025$35.83$36.20+1.03%$36.20$36.201,383 shs$0.0008/04/2025$35.83$35.83$35.91$35.83755 shs$0.0008/01/2025$35.38$35.83+1.27%$35.91$35.83755 shs$0.0007/31/2025$35.66$35.38-0.79%$35.40$35.38601 shs$0.0007/30/2025$35.64$35.66+0.06%$35.66$35.66222 shs$0.0007/29/2025$35.34$35.64+0.85%$35.66$35.6221,907 shs$0.0007/28/2025$35.53$35.34-0.53%$35.34$35.3425,443 shs$0.00 Related Companies BRLXF Stock Chart CDZIP Stock Chart CZAVF Stock Chart CGEI Stock Chart CHNGQ Stock Chart CWEN.A Stock Chart CMNR Stock Chart CIG.C Stock Chart ENAKF Stock Chart ELCPF Stock Chart Receive HRNNF Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Hydro One and its competitors with MarketBeat's FREE daily newsletter. 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