BlockBeats News, August 13th. According to BIT (bit.com) market data, the US stock optoelectronics sector opened mixed. The "optoelectronics giant" Coherent dropped over 3% after delivering a comprehensive performance guidance for the new quarter that exceeded market expectations. In the earnings report announced after market close yesterday for Q4, the revenue was $2.05 billion, a 34% year-on-year growth, surpassing the expected $19.8-20.2 billion. The projected revenue for Q1 is $22.0-24.0 billion, higher than the expected $21.3 billion, with an adjusted EPS forecast of $1.85-2.05, above the expected $1.77.The Pure Photonic ETF FOTO rose by 0.05%;Corning (GLW) dropped by 0.19%;Marvell Technology (MRVL) rose by 1.73%;AAOI (Applied Optoelectronics) fell by 1.10%. The company is a manufacturer of high-speed optical modules (800G/1.6T), focusing on AI data center transceivers;LITE (Lumentum Holdings) fell by 0.39%. The company is a core supplier of optical communication lasers and modules, a key player in AI data center manufacturing;COHR (Coherent Corp) fell by 3.76%. The company is a leader in lasers, optical components, and photonic solutions, serving the data center and industrial sectors;CIEN (Ciena Corporation) rose by 0.93%. The company produces high-speed SerDes and connectivity chips, focusing on low-power interconnects for AI data centers.