The share price of Fluence Energy, Inc. (NASDAQ:FLNC) fell by 22.01% between December 10 and December 17, 2025, putting it among the Energy Stocks that Lost the Most This Week. Fluence Energy (FLNC) Slides Following Analyst Downgrades Fluence Energy, Inc. (NASDAQ:FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage. On December 8, Mizuho downgraded Fluence Energy, Inc. (NASDAQ:FLNC) from ‘Neutral’ to ‘Underperform’ due to the stock’s ...