Energy Recovery, Inc. (ERII:NASDAQ) closed at $6.68 on October 23, 2026, up 0.15% on the day. The stock trades 63.5% below its 52-week high of $18.32 and 2.0% above its 52-week low of $6.55. Over the past year, it lost 63.1%. Energy Recovery, Inc. is part of the Technology sector (Industrial Machinery/Components).
In 252 trading sessions since October 23, 2025, ERII closed higher on 120 days (48%). Its best day was May 18, 2026 (+7.73%) and its worst was February 26, 2026 (-35.30%). The stock moved 10% or more in a single session 3 times.
Energy Recovery, Inc. provides energy solutions to industrial fluid flow markets under the ERI, PX, Pressure Exchanger, PX Pressure Exchanger, AT, AquaBold, VorTeq, IsoBoost, and IsoGen names worldwide. The company operates through Water and Oil & Gas segments. It offers pressure exchanger energy recovery devices and turbocharger technologies for water desalination and oil and gas; AT turbochargers for low-pressure brackish, and high-pressure seawater reverse osmosis systems; and high-performance, high-efficiency, high-pressure, and circulation booster pumps. The company also provides VorTeq hydraulic fracturing system; IsoBoost energy recovery systems, such as hydraulic turbo chargers, and related controls and automation systems; and IsoGen energy recovery systems, including hydraulic turbines, and related controls and automation systems. In addition, it offers engineering, technical support, and training services; and preventive maintenance and support services, as well as reinstallation services. The company serves engineering, procurement, and construction (EPC) firms that design and build large desalination plants; original equipment manufacturers; oil companies; exploration a...
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