Advanced Energy delivered the quarter its transformation has been pointing toward. Revenue of $574 million rose 30% year over year and landed above the high end of guidance, powered by record Semiconductor Equipment demand and a data center business that keeps compounding with AI capital spending. The GAAP and non-GAAP earnings lines tell two stories and both are real. GAAP diluted earnings per share from continuing operations came in at $1.29, up from $0.67 a year ago - a number that understates the operating result because it carries $0.75 per share of non-cash expense from the partial conversion of the 2028 convertible notes. Exclude that one-time cost, as management does, and non-GAAP EPS was $2.74, up 83% from the year-ago $1.50 and above the high end of guidance. On that view this was one of the strongest quarters of the company's modern history, and management called it exactly that: record results in both revenue and earnings per share.
The quarter has a second act that matters as much as the growth. In May the company issued $1.15 billion of 0% convertible notes due 2031, used the proceeds to buy out and exchange most of its higher-yielding 2028 notes, and ended June with a net-cash balance sheet - roughly $1.40 billion of cash against about $1.29 billion of total debt. That refinancing, done at a zero interest rate, is the infrastructure underneath the growth story: it gives the company a low-cost balance sheet to fund expansion into 2027 and beyond. The stock, having climbed roughly 130% off its 52-week low of $143 to trade near $328, is now being valued not on the vintage power-solutions company but on the machine that powers AI data centers and advanced semiconductor fabs. The 30% top-line quarter, a margin that expanded to a 41% gross margin, and guidance for another ~$640 million quarter are the market's justification for that re-rating.