Why Is Astera Labs (ALAB) Stock Price Down 11.96% Today, August 5? Lower Margin Guidance Triggers a Post-Earnings Selloff

Astera Labs sold off ~12% post-earnings despite a large revenue beat and strong Q3 revenue guidance, as investors focused on lower gross-margin guidance and the need to prove Scorpio ramp execution amid already elevated AI-connectivity expectations. The move reflects an expectations reset and positioning unwind in a high-multiple AI infrastructure name, with near-term trading sensitive to margin/mix commentary and production ramp evidence.