POET Technologies Stock Plunges 40% After Marvell Cancels Orders Last updated 5 minutes ago The Toronto-based photonic chip maker announced Marvell's April 23 notice canceling orders, citing alleged confidentiality breaches by POET on purchase and shipping details. These included initial production units first revealed in a 2023 press release, reversing a recent stock rally sparked by CFO comments linking a deal to Marvell. POET stressed it continues serving other customers, like a $5 million order for 800G optical engines, and remains focused on AI networking growth amid the setback.