Although management has yet to confirm that it will exit the Obamacare marketplaces soon, reports are that Anthem, Inc. (NYSE: ANTM) is close to announcing it will leave a significant number of states as soon as 2018. If so, then it will mark another high-profile loss for the Affordable Care Act exchanges, because Anthem is the country’s second-biggest health insurer, and it sells plans in 14 states.