AMSC Surpasses Estimates with 21.4% Revenue Growth; Stock Up 19.7% on Q4 Results

American Superconductor (NASDAQ:AMSC) reported Q4 CY2025 results topping expectations, with revenue up 21.4% year-on-year to $74.53 million and non-GAAP profit of $2.75 per share exceeding consensus. The stock jumped 19.7% to $32.96 on the earnings release (February 4, 2026). Supporting context: Q4 revenue guidance of $80 million was 1.8% below estimates, while next quarter is expected to see a 20% YoY sales increase. Analysts project 24.8% CY2026 revenue growth and a $3.36 full-year EPS, implying continued strong demand despite a moderation from a 43.7% CAGR in the prior two years. The company’s five-year EPS trend accelerated to 249% annualized, and Q4 adjusted EPS beat by a wide margin. Challenges remain: AMSC has a negative average operating margin of -6.4% over five years, though the ratio improved 31pp and Q4 profit margin reached 4.5%. Long-term growth is supported by a 27.1% CAGR in sales over the last five years, but profitability is still being realized with leverage on cost of sales contributing to higher efficiency.