CPO Concept Stocks Rally at Open; Mingpu Photonics Hits Daily Limit
On August 28, 2026, CPO (co-packaged optics) concept stocks rallied at the market open. Mingpu Photonics jumped straight to its daily limit, while Guangku Technology, Zhongji Innolight, Ruijie Networks, Huagong Tech, Youyan Powder, and Jiulian Technology followed with gains.