American Superconductor's stock surged 17.39% in pre-market trading, following the release of its third-quarter fiscal 2025 financial results that significantly exceeded analyst expectations.

The power resiliency solutions provider reported quarterly adjusted earnings of $2.81 per share, dramatically surpassing the consensus estimate of $0.15. Revenue for the quarter reached $74.529 million, beating expectations and representing a year-over-year increase of over 20%. The company's strong performance was attributed to both organic growth and the recent acquisition of Comtrafo, which contributed to results in the final weeks of the quarter.

Looking ahead, AMSC provided optimistic guidance for the fourth quarter, expecting revenue to exceed $80 million. The company's net income of $117.8 million included a $113.1 million discrete tax benefit related to the release of a valuation allowance on a deferred tax asset, further boosting investor confidence in the company's financial momentum.