OPTU ▲ +1.0% - Optimum Communications, Inc. $OPTU - Optimum Expands T-Mobile Relationship to Bring Customers Advanced 5G Connectivity and New Mobile Capabilities Optimum Communications shares rose 1.0% following an announcement that the company is expanding its partnership with T-Mobile to offer customers 5G connectivity and new mobile services. The expansion of a relationship with a major wireless carrier typically signals new revenue opportunities and broadened service offerings, which can attract investor interest in the company's growth prospects. 31-AUG-2026 08:09 AM ET