AMBA is trading 5.8% down at $66.63 following investor reaction to a recent patent ruling against a key customer, Insta360, along with cautious management commentary on supply chain risks and recent insider selling from the CFO. - A June 17 patent ruling went against Insta360, stirring worries about potential chip order slowdowns for Ambarella. - Management's cautious tone on second-half 2026 supply chain risks and recent insider selling further contributed to the negative sentiment.