Hydro One (HRNNF) Stock Chart & Stock Price History $35.36 +0.24 (+0.67%) As of 09/19/2025 01:49 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 4.05%, with a year-to-date return of 15.66%. In the past month, the stock has decreased 3.20%, reflecting recent market activity. As of the latest close, Hydro One traded at $35.36 with a market cap of and volume of 140,857 shares. Five years ago, the stock traded at $20.98, representing a 68.55% increase over that period. At the time, it had a market cap of and a volume of 36 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-0.24%1 Month Performance-3.20%3 Month Performance-1.13%Year-To-Date Performance+15.66%1 Year Performance+4.05%5 Year Performance+68.55% HRNNF Stock Chart for Saturday, September, 20, 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 Capitalization09/19/2025$35.12$35.36+0.67%$35.36$35.30140,857 shs$0.0009/18/2025$35.44$35.12-0.90%$35.12$35.12312,600 shs$0.0009/17/2025$35.40$35.44+0.11%$35.51$35.3451,901 shs$0.0009/16/2025$35.44$35.40-0.11%$35.40$35.404,864 shs$0.0009/15/2025$35.45$35.44-0.03%$35.44$35.4341,436 shs$0.0009/12/2025$35.45$35.45$35.45$35.453,713 shs$0.0009/11/2025$35.42$35.45+0.08%$35.45$35.43906 shs$0.0009/10/2025$35.86$35.42-1.23%$35.42$35.4221,138 shs$0.0009/09/2025$35.86$35.86$35.89$35.86112,011 shs$0.0009/08/2025$36.12$35.86-0.72%$35.89$35.86112,011 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. 09/05/2025$36.12$36.12$36.12$36.1221,488 shs$0.0009/04/2025$35.97$36.12+0.42%$36.12$36.1221,488 shs$0.0009/03/2025$35.97$35.97$36.15$35.9742,208 shs$0.0009/02/2025$36.27$35.97-0.83%$36.15$35.9742,208 shs$0.0009/01/2025$36.27$36.27$36.27$36.2715,186 shs$0.0008/29/2025$36.27$36.27$36.44$36.2714,325 shs$0.0008/28/2025$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$0.00 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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