Astera Labs Shares Fall 30.8% After Q4 Margins Slide on $16M R&D Costs
Astera Labs shares plunged 30.8% after Q4 2025 gross margin fell 70 basis points to 75.7% and operating margin dropped 150 basis points to 40.2% due to a $16M rise in R&D costs from the AiXscale acquisition. The company guides Q1 2026 revenue of $286M–$297M and EPS of $0.53–$0.54.
1. Q4 2025 Earnings and Margin Pressure
Astera Labs posted a 30.8% drop in its share price after reporting Q4 2025 non-GAAP gross margin of 75.7%, down 70 basis points sequentially, and non-GAAP operating margin of 40.2%, down 150 basis points on a $16 million increase in R&D spending tied to its AiXscale acquisition and hardware sales mix.
2. Q1 2026 Financial Guidance
Management expects first-quarter 2026 revenue between $286 million and $297 million, with non-GAAP earnings of $0.53 to $0.54 per share, reflecting a year-over-year EPS increase of 57.6%.
3. Product Portfolio and Market Opportunity
Astera Labs is scaling its product portfolio with the Scorpio X-Series AI fabric switch, custom NVLink Fusion connectivity and expanded Aries and Taurus signal-conditioning solutions. The company projects its served addressable market will grow more than 10-fold to $25 billion over five years, driven by AI infrastructure demand and hyperscaler partnerships.