Allegro MicroSystems, the magnetic-sensing and power-IC supplier built on automotive-grade reliability, opened fiscal 2027 with its sixth consecutive quarter of sales growth, strongest quarter yet, and a headline that should have read like a clean acceleration. Sales rose 27% year over year to $259 million. Adjusted operating margin widened to 19.4%, adjusted earnings per share nearly 2.6 times higher at $0.23, and the company swung to GAAP profitability of $0.08 per diluted share against a $0.07 loss a year ago. The engine of the quarter is the new thing: data-center applications reached a record 17% of total sales, up from 14% in the prior quarter, and powered the Industrial-and-Other segment up 59%.
And yet the stock sold off into the print. After tripling off its November 2025 trough to an intraday high of $71.77 at the end of June, shares gave back about 40% into the low $40s around the July 30 release and trade near $42.50 today. That is the tension at the center of this report: a company delivering genuinely strong, accelerating results that the market had already pushed far ahead of the numbers before they arrived. The data-center breakout is real, but the question this quarter answers is not whether Allegro is growing - it is whether a roughly 40-times forward-earnings premium over the previously dominant automotive base is now the growth story that a cyclical industry can carry.