Shares of Eos Energy Enterprises Inc. (EOSE) soared 13.49% in after-hours trading on Tuesday following the release of the company's first-quarter 2025 financial results, which significantly exceeded analyst expectations.

The energy storage solutions provider reported a surprising net income of $15.136 million for the quarter, a stark contrast to the $42.4 million loss analysts had predicted. This positive bottom line was complemented by revenue of $10.457 million, slightly surpassing the estimated $10.4 million. Adjusted earnings per share came in at a loss of $0.17, better than the anticipated loss of $0.21 per share.

Investors were particularly encouraged by Eos Energy's reaffirmation of its 2025 revenue guidance, projecting between $150 million and $190 million for the full year. This outlook suggests strong growth potential and increased market confidence in the company's long-term prospects. The combination of better-than-expected current performance and optimistic future projections likely fueled the significant after-hours stock price increase as investors reassessed the company's value and growth trajectory.