Data: Yahoo Finance; Chart: Axios VisualsThe Trade Desk, one of the largest publicly traded advertising technology companies globally, is building a connected television operating system, CEO and founder Jeff Green told Axios in an interview. Why it matters: Existing OS providers, like Roku, Amazon's Fire TV and Google's Android TV, have a conflict of interest because they own content, Green said.What they're saying: Green believes that conflict of interest has muddled the advertising ecosystem ...