Filing: San Jose-based Chinese optical module maker Ligent seeks ~$727M in a Hong Kong IPO, after its rival Zhongji Innolight's $6.8B Hong Kong debut in July (Sangmi Cha/Bloomberg)

San Jose-based Ligent, a Chinese optical-module manufacturer, is filing for a Hong Kong initial public offering that could raise roughly $727 million. The filing follows Zhongji Innolight’s July Hong Kong debut, which raised about $6.8 billion, highlighting the growing presence of Chinese optical-component firms in the market.