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Shares of FuelCell Energy (NASDAQ:FCEL) are down 10% in Thursday afternoon trading, leading a profit-taking reversal across some fuel cell names. The slide unwinds a chunk of yesterday’s 14% pop tied to FuelCell Energy’s strategic agreement with Fit Energy.
Bloom Energy (NYSE:BE) stock is off 7%, last seen near $303 after closing Wednesday at $326.19. Bloom Energy shares had climbed alongside FuelCell Energy on the data-center power demand theme before today’s reversal.
Plug Power (NASDAQ:PLUG) stock is bucking the trend, edging up 1% to $2.64. Plug Power is the lone gainer in the trio, supported by a fresh operational milestone announced this morning.
Profit-Taking Reversal After Yesterday’s Fit Energy Pop
Today’s drop in FuelCell Energy stock looks like mean reversion after a sharp one-day spike. FuelCell Energy surged on the Fit Energy strategic agreement, with the broader fuel cell complex catching a bid on data-center power demand chatter. No fresh negative catalyst is driving today’s giveback.
Bloom Energy stock is participating in the same unwind. The bull case on Bloom Energy rests on AI hyperscaler demand, including a $5 billion Brookfield AI infrastructure partnership and an Oracle (NYSE:ORCL | ORCL Price Prediction) collaboration referenced in its Q1 FY2026 results. The bear case is straightforward: after a parabolic run, even great stories pause to digest gains.
FuelCell Energy’s Q2 FY2026 results, reported June 8, showed revenue of $35.59 million and an adjusted loss per share of $0.53, alongside a $42.57 million non-cash impairment on the Groton Project. Management also disclosed a pipeline expansion to 4 GW, 90% tied to data centers. That data-center pipeline is the core thesis fueling the rally that’s now partly unwinding.
Plug Power Diverges on Denmark Electrolyzer Milestone
Plug Power stock is the standout. Plug Power announced commissioning of a 5 MW GenEco PEM electrolyzer system at European Energy’s Måde Power-to-X facility in Esbjerg, Denmark, bringing one of Denmark’s earliest operational PtX sites into active green hydrogen production. The facility is expected to produce roughly 550 metric tons of green hydrogen annually at full capacity.
CEO José Luis Crespo framed the milestone as a shift “from one-off deployments to repeatable execution.” Plug Power notes more than 70 GenEco electrolyzer systems operating across six continents. That operational proof point appears to be supporting Plug Power shares while peers unwind yesterday’s pop.
Plug Power’s Q1 FY2026 report showed revenue of $163.51 million, with GAAP gross margin improving meaningfully off prior-year lows. The company is targeting positive EBITDAS in Q4 2026 and full profitability by the end of 2028, which gives Plug Power a turnaround framing that’s distinct from its more extended peers.
Volatile Names With Enormous Runs
The context here matters. Bloom Energy stock has run 24975% year to date (YTD), while Plug Power stock is up 34% YTD. FuelCell Energy stock, which is up 167% YTD, has likewise posted a powerful multi-month rally as the company’s data-center pipeline has ballooned.
With moves of that magnitude, a single-session pullback of 7% to 9% in FuelCell Energy or Bloom Energy isn’t unusual. It also doesn’t, on its own, change the longer-term data-center power thesis these names have been riding. A pullback after a sharp one-day pop is the rule, not the exception, in this corner of the market.
Crowd sentiment reads mixed across the trio. Composite sentiment is neutral on FuelCell Energy at 58.54 and Plug Power at 54.41, while Bloom Energy registers bearish at 36.05, a drop of nearly 25 points over 30 days.
What to Watch Now
Investors can watch for whether FuelCell Energy and Bloom Energy stocks find support in the coming sessions or extend the slide. Follow-through tomorrow would tell more about whether today is a one-day wobble in FuelCell Energy and Bloom Energy or the start of a broader sector cooldown.
Analyst commentary on valuation after the run could also shape the next move, particularly for Bloom Energy stock given the size of its rally. Investors might consider watching Plug Power for any follow-on commercial wins tied to the GenEco electrolyzer platform after today’s Denmark milestone.
Given the volatility on display in FuelCell Energy, Bloom Energy, and Plug Power, investors should consider keeping their position sizes modest in all three names. These stocks have delivered enormous gains but can swing hard in both directions on any given session, as today’s reversal in FCEL stock and BE stock demonstrates.
