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Lumentum et al. Plunge on DoJ Huawei Probe; Ciena's Gain?

Optical-technology stocks are having a second really bad week after the U.S. Department of Justice opened a criminal investigation into China’s privately held Huawei, which buys parts from the optical companies. While the component maker shares crashed, some analysts see potential benefit for the two optical-systems makers that compete most closely with Huawei, Ciena (CIEN) and Infinera (INFN). The Wall Street Journal’s Stu Woo and Aruna Viswanatha relate that multiple unnamed sources say the DoJ is “investigating whether Huawei Technologies Co. violated U.S. sanctions related to Iran.” This is just the latest action against Iran, which has long been blocked from selling telecom equipment to U.S. carriers by the U.S. government.