Optical stocks are getting hit Friday after President Donald Trump said he was prepared to "go to 500" in a tariff battle with China, referring to the idea that the U.S. may levy tariffs on $505 billion in Chinese products, or the whole import balance from last year. Shares of Lumentum Holdings Inc. are down 9% in Friday's session, while shares of Oclaro Inc. , which Lumentum intends to acquire, are down 4.4%. Oclaro generates more than 10% of revenue from China's ZTE, Needham analyst Alex Henderson has written. Читать дальше...