Astera Labs shares rise 5.39% after-hours as Mizuho cites Amazon-Nvidia NVLink partnership support.

Astera Labs (ALAB) surged 5.39% in after-hours trading following analyst commentary that reframed its recent 13.5% intraday decline as an over-reaction. Mizuho’s analyst highlighted that the partnership between Amazon and Nvidia for NVLink on Trainium4 is additive for Astera, emphasizing higher dollar content potential and clarifying that UALink remains a core offering for Amazon’s AI infrastructure. This rebuttal to market concerns about reduced demand for Astera’s interconnect technologies, combined with institutional validation of its strategic positioning in AI expansion, drove the rebound. The stock had previously dipped on profit-taking (Reason 2) and mixed earnings reactions (Reason 4), but post-market optimism centered on long-term growth prospects tied to hyperscaler collaborations and NVLink Fusion integration.