UPDATE 2-Amazon's Deliveroo deal put in jeopardy by UK regulator's 'serious concerns' By: Reuters: Company News December 11, 2019 at 08:10 AM EST * Amazon, Deliveroo must address CMA concerns or face deeper probe (Adds detail, Amazon, Deliveroo response) Read More >> Related Stocks: Amazon.com Uber Technologies Inc Wal-Mart Stores, Inc.