u.s. health insurer unitedhealth group inc tuesday say would largely exit obamacare individual insurance market 2017 cite expectations mount losses program unitedhealth large u.s. health insurer one big sellers plan exchange create part president barack obama national healthcare law unitedhealth sell plan 34 state year 25 state last year next year remain handful state unitedhealth ceo stephen hemsley say prepare remark part company first-quarter earn report company warn investors late last year lose money new plan might exit market tuesday company raise 2016 expectation losses exchange 125 million 650 million unitedhealth hemsley say short term high risk profile new members well small expect enrollment suggest unitedhealth could offer plan sustain basis first quarter unite health profit better-than-expected unitedhealth share rise 1.9 percent 130.29 early new york stock exchange trade health insurers include aetna inc anthem inc also large players exchange recent months say continue sell exchange plan company 795,000 customers exchange half new unitedhealth say expect 650,000 members year end government say february 12 million people sign obamacare-related insurance healthcare.gov state-based exchange jan. 31. previous government expectations 20 million people unitedhealth raise expectations 2016 profit part favorable tax rate also help beat wall street expectations first quarter low sales administrative cost decline amortization intangible assets also help first quarter result adjust basis health insurer earn 1.81 per share compare wall street analyst expectations earn 1.72 per share accord thomsonreuters i/b/e/s net profit rise 1.61 billion 1.67 per share 1.41 billion 1.46 per share year early company expect 2016 adjust net earn 7.75- 7.95 per share 15 cents per share previous estimate unitedhealth plan exit obamacare exchange