Summit Insights analyst KinNgai Chan downgraded Ambarella to Hold from Buy. While the firm still sees enough catalysts for Ambarella to outperform its FY27 expectations, it sees elevated risk in the second half of FY26 as supply chain tightening could indirectly pressure customer orders and inflationary pressures in the tech supply chain could stifle end demand for Ambarella customers' products, the analyst tells investors.