CNN and CBS News now operate under the same corporate owner after the merger between Paramount and Warner Bros closed. The combined company has taken the name Skydance. Its shares started trading on Wall Street on Tuesday, giving investors a first chance to value the merged business. The deal brings together two of the most recognizable names in American news. It also folds longtime rivals in entertainment and journalism into a single house. Employees across the newsrooms are waiting to learn what consolidation will mean for their operations and jobs. The first trading day offered an early read on how the market sees the combination.