AMSC Soars 29.38% on 440.81% Volume Surge Ranks 487th in Market Activity as AI Infrastructure Demand Drives Momentum

On July 31, 2025, American Superconductor (AMSC) surged 29.38% with a trading volume of $0.29 billion, a 440.81% increase from the previous day, ranking 487th in market activity. The rally followed the company’s first-quarter earnings report, which revealed a 80.9% year-over-year revenue jump to $72.3 million and a tripled adjusted non-GAAP EPS to $0.30, both exceeding expectations. CEO Daniel P. McGahn highlighted strength in the semiconductor-driven AI and data center sectors as key growth drivers.

Despite a conservative Q2 guidance of $65–70 million in revenue and $0.14 adjusted EPS, investors appear focused on long-term AI-powered demand. Institutional investors, including Goldman Sachs and Millennium Management, have increased holdings, while insider sales have slightly reduced stake ownership. The stock trades at a valuation over 100 times this year’s adjusted earnings estimates, raising questions about sustainability amid its rapid price ascent.

The strategy of purchasing the top 500 stocks by daily trading volume and holding for one day generated a 166.71% return from 2022 to July 2025, outperforming the S&P 500’s 29.18% benchmark by 137.53%. This highlights the potential of high-volume momentum strategies in capturing market trends, though AMSC’s unique exposure to AI infrastructure remains a key factor in its recent performance.