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Why Is Astera Labs (ALAB) Stock Price Up 12.36% Today, Sep 21? Leo Memory Expansion and AI Chip Rally Lift ALAB
Astera Labs (ALAB) rose 12.36% to $340.74 on September 21, 2026, as investors focused on new AI-memory connectivity products and a broader optical-interconnect read-through. This draft examines the session, the limits of that explanation, and the technical conditions traders may watch next.