Allegro MicroSystems, Inc. (ALGM) saw its stock price plummet 9.36% in intraday trading on Thursday, despite reporting better-than-expected first-quarter results for fiscal 2026. The sharp decline appears to be driven by concerns over the company's second-quarter outlook, which fell short of analyst expectations in some key areas.

For the first quarter, Allegro reported sales of $203.405 million, surpassing the IBES estimate of $197.8 million. The company's adjusted earnings per share (EPS) came in at $0.09, also beating the estimated $0.08. However, it's worth noting that the GAAP EPS for the quarter was negative at -$0.07, indicating some one-time charges or adjustments affecting the bottom line.

Despite the strong Q1 performance, investors seem to be focusing on the company's guidance for the second quarter. Allegro expects Q2 net sales to be between $205 million and $215 million, which is roughly in line with the current analyst consensus of $207.7 million. However, the projected non-GAAP EPS range of $0.10 to $0.14 falls short of the $0.12 analyst expectation at the midpoint. This guidance suggests potential pressure on profitability in the coming quarter, which appears to be the primary factor contributing to the negative market reaction. The market's response underscores the importance of forward-looking guidance in shaping investor sentiment, even in the face of strong current results.