Eos Energy Enterprises, Inc. (NASDAQ:EOSE) reported on Wednesday first-quarter revenue of $57.0 million, up 445% year over year, but slightly below the analyst estimate of $57.576 million.

Diluted GAAP earnings came in at 12 cents per share, topping expectations for a loss of 22 cents per share. Shares climbed following the report, with the stock surging more than 10% as heavy short interest, exceeding 30% of the float, appeared to fuel a sharp rally.

Margin Improvement And Production Growth

Net income attributable to shareholders totaled $508.9 million, compared with $15.1 million a year earlier, primarily driven by non-cash mark-to-market fair value adjustments. Gross loss was $44.4 million, while adjusted EBITDA loss was $68.0 million.

Eos said revenue generated over the past two quarters exceeded its full-year 2025 revenue. The company reported record quarterly production performance for shipments, battery output, and bipolar manufacturing, while surpassing 6.0 GWh of discharged energy from deployed ...