Energy Recovery (ERII) Stock Chart & Stock Price History $15.86 +0.09 (+0.54%) As of 12:30 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Energy Recovery Stock Price Performance The Energy Recovery (ERII) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 6.18%, with a year-to-date return of 7.86%. In the past month, the stock has increased 9.95%, reflecting recent market activity. As of the latest close, Energy Recovery traded at $15.77 with a market cap of $838.96 million and volume of 465,233 shares. Five years ago, the stock traded at $8.47, representing a 87.19% increase over that period. At the time, it had a market cap of $471.63 million and a volume of 191,334 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+0.09%1 Month Performance+9.95%3 Month Performance+20.11%Year-To-Date Performance+7.86%1 Year Performance-6.18%5 Year Performance+87.19% ERII Stock Chart for Monday, October, 6, 2025 ERII Chart by TradingView Energy Recovery 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 Capitalization10/03/2025$15.87$15.77-0.63%$16.28$15.75465,233 shs$838.96 million10/02/2025$15.84$15.87+0.19%$15.94$15.68347,851 shs$844.28 million10/01/2025$15.42$15.84+2.72%$15.85$15.22371,502 shs$842.69 million09/30/2025$15.35$15.42+0.46%$15.45$15.23324,955 shs$820.34 million09/29/2025$15.32$15.35+0.20%$15.47$15.14497,911 shs$816.62 million09/26/2025$15.24$15.32+0.52%$15.45$15.07479,151 shs$815.02 million09/25/2025$15.28$15.24-0.26%$15.27$14.89435,596 shs$810.77 million09/24/2025$15.06$15.28+1.46%$15.33$15.00388,050 shs$812.87 million09/23/2025$14.95$15.06+0.74%$15.36$14.98387,275 shs$801.19 million09/22/2025$14.69$14.95+1.77%$15.05$14.51395,966 shs$795.34 million Get the Latest News and Ratings for ERII and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Energy Recovery and its competitors with MarketBeat's FREE daily newsletter. 09/19/2025$15.14$14.69-2.97%$15.03$14.581.14 million shs$781.51 million09/18/2025$14.60$15.14+3.70%$15.23$14.53500,266 shs$805.42 million09/17/2025$14.62$14.60-0.14%$14.94$14.52633,621 shs$776.72 million09/16/2025$14.55$14.62+0.48%$14.85$14.51665,370 shs$777.78 million09/15/2025$14.36$14.55+1.32%$14.64$14.20397,088 shs$774.03 million09/12/2025$14.53$14.36-1.17%$14.51$14.28258,762 shs$763.92 million09/11/2025$14.59$14.53-0.41%$14.65$14.41369,266 shs$773.00 million09/10/2025$14.38$14.59+1.46%$14.59$14.20360,613 shs$776.19 million09/09/2025$14.58$14.38-1.37%$14.55$14.06508,449 shs$764.99 million09/08/2025$14.42$14.58+1.11%$14.66$14.31437,530 shs$775.66 million09/05/2025$14.31$14.42+0.77%$14.57$14.26325,647 shs$767.14 million Related Companies SXI Stock Chart AIN Stock Chart TRS Stock Chart KMT Stock Chart TNC Stock Chart PRLB Stock Chart GRC Stock Chart HY Stock Chart GHM Stock Chart CMCO Stock Chart Receive ERII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Energy Recovery and its competitors with MarketBeat's FREE daily newsletter. 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