Fluence Energy, Inc. faces investigations and a prospective securities class action by Rosen Law Firm and Hagens Berman on behalf of investors who purchased or otherwise acquired its securities from Nov. 24, 2025, through Sept. 16, 2026. The firms allege that Fluence may have provided misleading information about data-center demand, backlog coverage, production ramp-up and manufacturing facilities, including its Houston facility and new contract sites supporting Gridstack Pro battery energy storage systems. Fluence cut fiscal 2026 revenue guidance to approximately $2.4 billion from a prior midpoint of approximately $3.0 billion and widened its adjusted EBITDA loss forecast to approximately $200 million from a prior midpoint loss of approximately $10 million. Shares fell $21.33, or 73%, between Feb. 4 and Sept. 17, 2026, while the company’s market capitalization declined by roughly $3 billion across the sequence of announcements. Hagens Berman has set Nov. 27, 2026, as the deadline for investors seeking lead-plaintiff status.