FuelCell Energy (FCEL) delivered an exceptional 70% gain in June 2026, according to TradingView data, making it one of the best-performing US stocks of the month. The stock now trades at $36.25, representing a remarkable turnaround from previous performance. The rally's momentum was particularly concentrated in the final week of June, with the past 5 trading days adding another 79% to the overall gains. As reported by multiple sources, the stock has surged 552% over the past 12 months and is up 383% year-to-date in 2026, capping the company's best quarter in more than 5 years of trading.
The stock's surge is driven by FCEL's strategic pivot toward the AI data center power market, where over 80% of its commercial pipeline is now tied to data centers. According to company reports, the total pipeline has grown by 275% year-over-year across recent quarters. The centerpiece of this strategy is the Fit Energy agreement announced in June, where FCEL will supply up to 380 MW of clean baseload on-site power for AI data centers, with a deposit-backed initial order for 30 MW and delivery beginning in late 2026. Additional catalysts include the Export-Import Bank of the United States (EXIM) approving a $49 million financing package to support South Korea expansion and management outlining plans to increase Torrington's manufacturing capacity to 500 megawatts annually with an investment of $200 to $275 million.
FCEL reported strong fiscal first quarter 2026 results in March 2026, with revenue reaching $30.5 million, a 61% increase from $19.0 million in the same period last year, driven by progress on power generation projects and advancing data center power strategy. However, the company continued to face operating challenges, posting a gross loss of $5.9 million, an operating loss of $26.3 million, and a net loss per share of $0.49. The stock received additional validation when it was included in the Russell 3000 index as of June 26, unlocking passive index-tracking flows. Trading volume also confirmed the sentiment shift, with Stocktwits message volume up 1,056% in 24 hours during the peak of the rally, as reported by multiple sources.
Despite the strong performance, analysts note execution risks including ramp execution and management's ability to reach long-term product gross margin targets of over 20%. However, one analyst on X believes the company can achieve 2x+ returns by EOY ($50+) once execution questions are addressed. The backlog stood at $1.17 billion, slightly down from the prior year, as the company focuses on commercial momentum in carbon capture and high-efficiency fuel cell solutions to meet growing demand for clean energy and data centers. The company's transformation from a traditional fuel cell developer to a key player in the AI data center power infrastructure represents a fundamental shift in its business model and market positioning.
