Here’s how does UnitedHealth’s Obamacare retreat does — or doesn’t — affect you By: MarketWatch April 20, 2016 at 15:50 PM EDT UnitedHealth ha surprised the market by announcing plans to withdraw from all but a handful of Obamacare marketplaces. Read More >> Related Stocks: Aetna Anthem Inc Centene Corp Humana Molina Healthcare Inc UnitedHealth Group