JPMorgan analyst Samik Chatterjee raised his price target for Ciena (CIEN) to $53 from $50 saying he sees further upside in the shares. The analyst sees ~$2B of incremental revenue opportunity for the company through continued consolidation of share away from sub-scale optical system companies, a ~$2.4B opportunity through accelerated share wins from entrenched players, and "strong" growth opportunities in its Metro segment, which he believes is levered to benefit the most from 5G investments. Further, investor sentiment on Ciena shares stands to "improve materially" as competitive concerns relating to Acacia Communications' (ACIA) product look overdone, Chatterjee tells investors in a research note. He keeps an Overweight rating on the name.