UPDATE 1-California's proposed 2015 Obamacare premiums to rise 4 pct in 2015
July 31, 2014 at 16:58 PM EDT
July 31 (Reuters) - Healthcare premiums will rise an average of 4.2 percent in 2015 on California's health insurance exchange, the largest of the state marketplaces established by President Barack Obama's healthcare reform, state officials said on Thursday.