19 November 2015 - The biggest U.S. health insurer said it has suffered major losses on policies sold on the Affordable Care Act’s exchanges and will consider withdrawing from them, adding to worries about the future of the marketplaces at the heart of the Obama administration’s signature health law.

For more details, go to: http://www.wsj.com/articles/unitedhealth-cuts-guidance-evaluating-its-insurance-exchange-segment-1447933310?mod=europe&mod=djemITPE_h