Fluence Energy jumps 98% in a week on record backlog and hyperscaler storage deals
A battery supplier still posting net losses rode AI data-centre power demand to a $3.6bn market cap, but a fresh share sale clouds the rally.
Fluence Energy shares ran 98% in the week to 2026-05-21, a move the company tied to a record order backlog and two new master supply agreements with major hyperscalers.3,2 The stock sat near a previous close of 20.77, with an intraday market capitalisation of about 3.6bn, according to exchange data.1
The re-rating reflects capital rotating into companies that can supply power for AI data-centre buildouts, where grid constraints have forced project delays.3 Fluence sells grid-scale battery storage, and the hyperscaler agreements push it deeper into the data-centre energy storage market.2
For a firm that just reported a second-quarter revenue miss and continues to post net losses, the move is steep. Trailing earnings per share stood at -0.31, and the shares swung between 18.67 and 21.87 on the day, against a 52-week range of 4.40 to 33.51.1 On the same data the stock traded at roughly 1.23 times sales and 8.72 times book, with a five-year beta of 2.62.1
Management reaffirmed a 2026 revenue target of about 3.2bn to 3.6bn, saying 85% of the midpoint is already contracted.2 It also said supply-chain disruptions that delayed roughly 80m of shipments have been resolved, with those units expected to land in coming quarters.2
Analysts project a stronger third quarter as deferred revenue from those Q2 shipments is recognised and delivery schedules normalise.2 Adjusted gross margins improved in the second quarter despite the revenue miss, though the company has yet to turn a trailing profit.2
The rally carries an overhang. In mid-May 2026 (2026-05-21) existing holders priced a secondary offering of 20 million Class A shares at around 21 each, lifting the public float and triggering immediate volatility alongside concern about institutional exits.2
The demand pull behind the story is the AI buildout itself. Nuclear and renewable baseload generation are being pitched as the cleanest fixes for the power constraints slowing AI infrastructure deployment, and storage sits alongside them as capital hunts for firms that can deliver reliable supply.3
Still, the operational picture is unproven. Backlog and contracted revenue point to visibility, but a single strong quarter driven by catch-up shipments is not the same as durable margin expansion, and the company remains loss-making on a trailing basis.1,2
The next test is the third-quarter report, when the deferred Q2 shipments hit the income statement.2 If revenue recognition tracks the backlog growth, the valuation can hold. If margins disappoint, the dilution from the secondary offering moves back to the centre of the story.2