Astera Labs: Promising Growth, Concentrated Revenue, And A Demanding Price (NASDAQ:ALAB)

• Q2 2026 revenue doubled to $392.4M, driven by AI data center connectivity demand and Scorpio X switch shipments • Growth is concentrated among a few hyperscale customers, raising execution risk • FCF margin halved to 19.2% and gross margin slipped to 73.3%, pressuring scalability outlook Astera Labs sits at the core of AI data center infrastructure, supplying connectivity solutions for processors, memory, and networking. Q2 2026 revenue doubled year-over-year to $392.4M, fueled by surging AI capex and expanding shipments of its Scorpio X switches. However, growth remains heavily concentrated among a handful of hyperscale customers, adding execution risk. Profitability metrics softened: free cash flow margin halved to 19.2% and gross margin slipped to 73.3%, raising questions about scalability and operating leverage. Given ALAB's premium valuation, sustained upside requires a broader customer base, margin stabilization, and confirmed volume shipments. Rating: Hold.