BOSTON—Health giant UnitedHealth Group Inc. went to court Wednesday to try to stop a former executive from working for a company it sees as a competitor, the health-care venture launched last year by Amazon.com Inc., Berkshire Hathaway Inc. and JPMorgan Chase & Co. The scope of the still-unnamed venture remains hazy beyond stated goals to improve health care and rein in costs for employees. But filings related to the case and court testimony offer some fresh clues about the closely watched effort, including that it may...

Source: Wall Street Journal January 31, 2019 01:41 UTC