Shares of Fluence Energy, Inc. (FLNC) surged 5.41% during intraday trading on Tuesday. The significant move followed a key analyst action that boosted investor sentiment towards the renewable energy storage provider.

The rally was primarily driven by Jefferies upgrading the stock to "buy" from "hold." The brokerage cited a clear recovery in U.S. demand, backlog-supported growth for fiscal year 2026, and long-term upside potential from data-center projects as key reasons for the upgrade. Jefferies also noted that visibility remains strong in the coming years, supported by grid-reliability needs boosting U.S. demand, while the APAC and EMEA regions benefit from tailwinds of the clean-energy transition.

The company had recently reaffirmed its revenue guidance, adding to the positive outlook. This analyst endorsement during the trading session provided a catalyst for the stock's notable upward movement.